229823131-sius711114-energy-recovery-ventilator-service-manual.pdf 1s4t5q

SiUS711114

Service Manual

Energy Recovery Ventilator

[Applied Models] VAM 300GVJU VAM 470GVJU VAM 600GVJU VAM1200GVJU

SiUS711114

Energy Recovery Ventilator ED Reference For items below, please refer to Engineering Data. No. 1 2

Item Specification Option List

ED No. EDUS711116 EDUS711116

Page

Remarks

P. 2 P. 49

1. Introduction ................................................................................................ iii 1.1 Safety Cautions ............................................................................................iii 1.2 Safety Symbols .......................................................................................... viii

Part 1 General Information 1. Model Names ..............................................................................................2 2. External Appearance...................................................................................2 3. Constructions ..............................................................................................3

Part 2 Operation 1. Operation ....................................................................................................6 1.1 Explanation for Systems............................................................................... 6 1.2 Operating the Energy Recovery Ventilator Using the Remote Controller of the VRV-System Air Conditioner........................................................................ 8

Part 3 Maintenance 1. Maintenance (for a qualified service person only).....................................11 1.1 How to Clean the Air Filter ......................................................................... 11 1.2 How to Clean the Heat Exchanger Core .................................................... 14

Part 4 Control Functions 1. Control Functions ......................................................................................16 1.1 List of Control Functions............................................................................. 16 1.2 Explanation of Individual Functions............................................................ 17 1.3 Layout of switches on PCB ........................................................................ 24

Part 5 Service Diagnosis 1. Troubleshooting ........................................................................................27 1.1 Error Code Display ..................................................................................... 27 1.2 Overall Alarm.............................................................................................. 29 Table of Contents

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1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20

Overall Error ............................................................................................... 30 Indoor Air Thermistor Error......................................................................... 31 Outdoor Air Thermistor Error...................................................................... 32 Damper System Error (Alarm).................................................................... 33 Damper System Error (Alarm).................................................................... 35 Dedicated LCD Remote Controller............................................................. 36 Transmission Error between Remote Controller and Main Unit ................. 38 Transmission Error (Remote Controller) .................................................... 40 Transmission Error between Main Remote Controller and Sub Remote Controller.................................................................................................... 41 Field Setting Error ...................................................................................... 42 Duplication of Centralized Remote Controller ............................................ 43 Main Unit PCB Abnormality........................................................................ 44 Dedicated LCD Remote Controller............................................................. 46 How to Check ............................................................................................. 47 Thermistor .................................................................................................. 48 Power Transformer..................................................................................... 49 Damper Motor ............................................................................................ 51 Check ......................................................................................................... 52

Part 6 Supplementary Explanation ................................................ 53 1. Service Mode ............................................................................................54 1.1 BRC1E71 ................................................................................................... 54

Part 7 Appendix 1. Wiring Diagram .........................................................................................57 1.1 VAM300GVJU / VAM470GVJU / VAM600GVJU ....................................... 57 1.2 VAM1200GVJU .......................................................................................... 58

ii

Table of Contents

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Introduction

1. Introduction 1.1

Safety Cautions

Cautions and Warnings

 Be sure to read the following safety cautions before conducting repair work.  The caution items are classified into “ Warning” and “ Caution”. Warning Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. Be sure to observe all the

safety caution items described below.  About the pictograms This symbol indicates the item for which caution must be exercised. The pictogram shows the item to which attention must be paid. This symbol indicates the prohibited action. The prohibited item or action is shown in the illustration or near the symbol. This symbol indicates the action that must be taken, or the instruction. The instruction is shown in the illustration or near the symbol.  After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates normally, and explain the cautions for operating the product to the customer.

1.1.1 Cautions Regarding Safety of Workers Warning Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for repair. Working on the equipment that is connected to the power supply may cause an electrical shook. If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not touch any electrically charged sections of the equipment. If the refrigerant gas is discharged during the repair work, do not touch the discharged refrigerant gas. The refrigerant gas may cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the welded section, evacuate the refrigerant gas completely at a well-ventilated place first. If there is a gas remaining inside the compressor, the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected, and it may cause injury. If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas may generate toxic gases when it s flames.

The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit. Be sure to discharge the capacitor completely before conducting repair work. A charged capacitor may cause an electrical shock.

Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug. Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire.

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Introduction

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Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 6.56 ft.). Insufficient safety measures may cause a falling accident.

In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant. The use of materials for R-22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure.

Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands may cause an electrical shock.

Do not clean the air conditioner by splashing water. Washing the unit with water may cause an electrical shock.

Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

Be sure to turn OFF the power switch and unplug the power cable when cleaning the equipment. The internal fan rotates at a high speed, and cause injury.

Be sure to conduct repair work with appropriate tools. The use of inappropriate tools may cause injury.

Be sure to check that the refrigerating cycle section has cooled down enough before conducting repair work. Working on the unit when the refrigerating cycle section is hot may cause burns.

Use the welder in a well-ventilated place. Using the welder in an enclosed room may cause oxygen deficiency.

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Introduction

1.1.2 Cautions Regarding Safety of s Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to replace them. Damaged cable and wires may cause an electrical shock, excessive heat generation or fire.

Do not use a ed power cable or extension cable, or share the same power outlet with other electrical appliances, since it may cause an electrical shock, excessive heat generation or fire.

Be sure to use an exclusive power circuit for the equipment, and follow the local technical standards related to the electrical equipment, the internal wiring regulations, and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work may cause an electrical shock or fire. Be sure to use the specified cable for wiring between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections may cause excessive heat generation or fire.

When wiring between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable. If the cover is not mounted properly, the terminal connection section may cause an electrical shock, excessive heat generation or fire.

Do not damage or modify the power cable. Damaged or modified power cable may cause an electrical shock or fire. Placing heavy items on the power cable, and heating or pulling the power cable may damage the cable.

Do not mix air or gas other than the specified refrigerant (R-410A / R-22) in the refrigerant system. If air enters the refrigerating system, an excessively high pressure results, causing equipment damage and injury.

If the refrigerant gas leaks, be sure to locate the leaking point and repair it before charging the refrigerant. After charging refrigerant, make sure that there is no refrigerant leak. If the leaking point cannot be located and the repair work must be stopped, be sure to perform pump down and close the service valve, to prevent the refrigerant gas from leaking into the room. The refrigerant gas itself is harmless, but it may generate toxic gases when it s flames, such as fan and other heaters, stoves and ranges.

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Introduction

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Warning When relocating the equipment, make sure that the new installation site has sufficient strength to withstand the weight of the equipment. If the installation site does not have sufficient strength and if the installation work is not conducted securely, the equipment may fall and cause injury.

Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire.

For unitary type Be sure to install the product correctly by using the provided standard only installation frame. Incorrect use of the installation frame and improper installation may cause the equipment to fall, resulting in injury.

Be sure to install the product securely in the installation frame mounted on the For unitary type window frame. only If the unit is not securely mounted, it may fall and cause injury.

When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent children from swallowing it. If a child swallows the coin battery, see a doctor immediately.

Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks.

Do not install the equipment in a place where there is a possibility of combustible gas leaks. If the combustible gas leaks and remains around the unit, it may cause a fire.

Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections may cause excessive heat generation, fire or an electrical shock.

If the installation platform or frame has corroded, replace it. Corroded installation platform or frame may cause the unit to fall, resulting in injury.

Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding may cause an electrical shock.

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Introduction

Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M or higher. Defective insulation may cause an electrical shock.

Be sure to check the drainage of the indoor unit after the repair. Defective drainage may cause the water to enter the room and wet the furniture and floor.

Do not tilt the unit when removing it. The water inside the unit may spill and wet the furniture and floor.

Be sure to install the packing and seal on the installation frame properly. For unitary type If the packing and seal are not installed properly, water may enter the room and only wet the furniture and floor.

1.2

Safety Symbols Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below: Icon

Type of Information Note

Description

Caution

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

Warning

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Reference

A reference guides the reader to other places in this binder or in this manual, where he/she will find additional information on a specific topic.

Indicates situations that may result in equipment or propertydamage accidents only.

Note:

Caution

Warning

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Part 1 General Information 1. Model Names ..............................................................................................2 2. External Appearance...................................................................................2 3. Constructions ..............................................................................................3

1

General Information

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Model Names

1. Model Names Type

300

470

600

1200

Model name

VAM300GVJU

VAM470GVJU

VAM600GVJU

VAM1200GVJU

2. External Appearance VAM300GVJU VAM470GVJU VAM600GVJU VAM1200GVJU

General Information

2

Constructions

SiUS711114

3. Constructions VAM300GVJU VAM470GVJU VAM600GVJU

(1) Hanger bracket

(8) Heat exchanger core It exchanges heat (temperature and humidity) from indoors with the air taken in from outdoors, changes the outside air to the same condition as indoors and then brings it indoors. (7) Service cover

(2) Duct connecting flange

(6) Control box

(3) Exhaust fan (4) Air filter

(9) Nameplate

(5) Damper

Important Sometimes when first using the unit, the odor of the heat exchanger core may be noticeable, but it is not harmful. The odor will gradually go away as the unit is used.

(10) Supply air fan

(11) Remote controller (Optional accessory)

(15) Service space for the air filter, the heat exchanger core and control box

(14) OA (Outdoor air) [Fresh air from outside]

(17) SA (Supply air) [Supply air to inside]

(13) EA (Exhaust air) [Exhaust air to outside]

(16) RA (Return air) [Return air from inside]

(12) Damper motor

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General Information

SiUS711114

Constructions

VAM1200GVJU (3) Exhaust fan

(1) Hanger bracket

(7) Service cover

(2) Duct connecting

(9) Nameplate (6) Control box

(10) Supply air fan

(5) Damper (4) Air filter (8) Heat exchanger cores It exchanges heat (temperature and humidity) from indoors with the air taken in from outdoors, changes the outside air to the same condition as indoors and then brings it indoors. Important

(11) Remote controller (Optional accessory)

Sometimes when first using the unit, the odor of the heat exchanger core may be noticeable, but it is not harmful. The odor will gradually go away as the unit is used.

(15) Service space for the air filter, the heat exchanger core and control box

(14) OA (Outdoor air) [Fresh air from outside]

(17) SA (Supply air) [Supply air to inside]

(13) EA (Exhaust air) [Exhaust air to outside]

(16) RA (Return air) [Return air from inside]

General Information

(12) Damper motor

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SiUS711114

Part 2 Operation 1. Operation ....................................................................................................6 1.1 Explanation for Systems............................................................................... 6 1.2 Operating the Energy Recovery Ventilator Using the Remote Controller of the VRV-System Air Conditioner .................................................................. 8

5

Operation

SiUS711114

Operation

1. Operation 1.1

Explanation for Systems This product is operated differently depending on the system configuration. For the operation of the remote controller for indoor unit and centralized control equipment, refer to the instruction manual provided with each unit.

1.1.1 Independent System Interlocking System with VRV or SkyAir System SYSTEM • ERV

ERV

• Independent system Remote controller

2-wire cord (field supply)

• • •

ERV

VRV

1-group linked operation system

• •

Remote Remote controller controller

• Interlocking system with VRV or SkyAir system Multi-group (2 or more) linked operation system

VRV

VRV

Group 1

Group 2

•

Standard method Up to 16 units can be controlled with the remote controller. (A system with 2 remote controls can be created in the main/sub setting.) All ERV operations can be used and indicated. Operation monitor output and humidifier operation are possible using the Adaptor PCB. Remote control cord should be field supply. (Maximum cord length: 1640 ft.) A combined total of up to 16 air conditioners and the ERV can be controlled. The ERV mode can be operated independently when air conditioners are not being used. Using the field setting of the remote controller for air conditioners, various settings such as pre-cool/pre-heat reservation ON/OFF, ventilation rate, ventilation mode, etc. Since all VRV units are connected to a single line in view of installation, all VRV units are subjects for operation. If there are problems operating all VRV units, do not use this system.

Remote controller Remote controller VRV Group 3 Remote controller

VRV Group 4 Remote controller

ERV

Note:

(1) Adaptor PCB: KPR50-2; Installation box for adaptor PCB: KRP50-2A90 (2) Operation of 2 or more group is not possible with a direct duct connection as below. (3) The direct duct connection can also be selected for 1-group linked operation system. SYSTEM ERV

VRV

Direct duct connection system

Duct

Remote controller Remote controller

Operation

Standard method • The ERV operates only when the air conditioner fan is ON. • When the air conditioner is not being used, the ERV can be operated in circulation or ventilation modes. • Other specifications are the same as those of the standard system.

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Operation

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1.1.2 Centralized Control System (VRV System) SYSTEM

VRV

“All”/individual control system

VRV

Remote controller Remote controller VRV

Standard method • Use of the ON/OFF controller, Adaptor PCB for remote control or Schedule timer Adaptor PCB for enables centralized control of the entire remote control, system. (maximum of 64 groups) Schedule timer, • The ON/OFF controller can turn ON or ON/OFF OFF the individual units. controller • The schedule timer and ON/OFF ERV controller can be used together. However, the Adaptor PCB for remote control cannot be used with another centralized control equipment.

VRV

ERV Remote controller Remote controller

Centralized control system Centralized control equipment

Zone 1 VRV

Zone control system

VRV

Remote controller

ERV

• Use of the centralized control equipment enables zone control via the centralized control line. (maximum of 64 zones) • The centralized control equipment displays the “Filter” indication and abnormality warnings, and enables resetting. • The centralized control equipment allows ventilation operation for each zone independently.

Remote controller

Zone 2

ERV

Caution

7

ERV

ERV

(1) Adaptor PCB: KRP50-2, Schedule timer: DST301BA61, ON/OFF controller: DCS301C71, Central remote controller: DCS302C71

Operation

SiUS711114

1.2

Operation

Operating the Energy Recovery Ventilator Using the Remote Controller of the VRV-System Air Conditioner

Remote Controller for VRV BRC1E71 1

11

4, 5, 6, 7 9

Mode

8

On/Off Menu OK

Fan Speed

2

Cancel

3

10

1. Operation mode selector button 2. Fan speed control button 3. Menu/OK button 4. Up button  5. Down button  6. Right button  7. Left button  8. On/Off button 9. Operation lamp 10. Cancel button 11. LCD (with backlight) Functions other than basic operation items (i.e., On/Off, Operation mode selector, Fan speed control, and temperature set point) are set from the menu screen. Note:

• • •

Do not install the remote controller in places exposed to direct sunlight, otherwise the LCD will be damaged. Do not pull or twist the remote controller wire, otherwise the remote controller may be damaged. Do not use objects with sharp ends to press the buttons on the remote controller, otherwise damage may result.

1. Operation mode selector button • Press this button to select the operation mode of your preference. Available modes vary with the indoor unit model. 2. Fan speed control button • Press this button to select the fan speed of your preference. Available fan speeds vary with the indoor unit model. Operation

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Operation

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3. Menu/OK button • Used to indicate the main menu. For details, refer to the operation manual attached to the remote controller. • Used to enter the selected item. 4. Up button  • Used to raise the set point. • The item above the current selection will be highlighted. (The highlighted items will be scrolled continuously when the button is continuously pressed.) • Used to change the selected item. 5. Down button  • Used to lower the set point. • The item below the current selection will be highlighted. (The highlighted items will be scrolled continuously when the button is continuously pressed.) • Used to change the selected item. 6. Right button  • Used to highlight the next items on the right-hand side. • Each screen is scrolled in the right-hand direction. 7. Left button  • Used to highlight the next items on the left-hand side. • Each screen is scrolled in the left-hand direction. 8. On/Off button • Press this button and system will start. • Press this button again to stop the system. 9. Operation lamp (Green) • This lamp illuminates solid during normal operation. • This lamp blinks if an error occurs. 10. Cancel button • Used to return to the previous screen. 11. LCD (with backlight) • The backlight will be illuminated for approximately 30 seconds by pressing any button. • If 2 remote controllers are used to control a single indoor unit, only the controller to be accessed first will have backlight functionality.

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Operation

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Part 3 Maintenance 1. Maintenance (for a qualified service person only).....................................11 1.1 How to Clean the Air Filter ......................................................................... 11 1.2 How to Clean the Heat Exchanger Core .................................................... 14

Maintenance

10

Maintenance (for a qualified service person only)

SiUS711114

1. Maintenance (for a qualified service person only) Warning

• • • •

Caution

• • •

1.1

ONLY A QUALIFIED SERVICE PERSON IS ALLOWED TO PERFORM MAINTENANCE. BEFORE SERVICING TURN OFF ALL POWER SUPPLY. To clean or do maintenance on the ERV, be sure to stop operation and turn the power switch OFF. It may cause electric shock or injury. Do not wash the ERV with water. Doing so may result in an electric shock. Use gloves when cleaning. Cleaning without gloves may cause injury. Watch your step. Use caution, as this requires working in high places. Do not use benzene or thinner to clean the outside surfaces of the unit. This may cause cracks, discoloration or machine trouble.

How to Clean the Air Filter Clean the air filter when the display shows the message “Time to clean filter” at the bottom. It will display that it will operate for a set amount of time.  CLEANING FREQUENCY AT LEAST ONCE EVERY YEAR (FOR GENERAL OFFICE USE) (CLEAN THE FILTER MORE FREQUENTLY IF NECESSARY.) • Increase the frequency of cleaning if the unit is installed in a room where the air is extremely contaminated. • If the dirt becomes impossible to clean, change the air filter (The replacement air filter is optional). 1. Remove the service cover. Go into ceiling through the inspection hatch, remove a fixture of service cover and take it off.

VAM300GVJU ~ 600GVJU (1) Service cover

(2) Fixture (3) Hanger

VAM1200GVJU (1) Service cover

(2) Fixture (3) Hanger

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Maintenance

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Maintenance (for a qualified service person only)

2. Remove the air filter. Take out from the heat exchanger cores.

VAM300GVJU ~ 600GVJU (1) Heat exchanger core (2 pcs.) (2) Handle

(3) Rail

(4) Air filter

VAM1200GVJU (1) Heat exchanger core (4 pcs.)

(2) Handle

(4) Air filter (3) Rail

3. Clean the air filter.

Use a vacuum cleaner A) or wash the air filter with water B). A) Using a vacuum cleaner B) Washing with water When the air filter is very dirty, use a soft brush and neutral detergent. After cleaning, remove water and dry in the shade. Note:

• • •

Maintenance

Do not wash the air filter with hot water of more than 122°F, as doing so may result in discoloration and/or deformation. Do not expose the air filter to fire, as doing so may result in burning. Do not use gasoline, thinner or other organic solvents. This may cause discoloration or deformation.

12

Maintenance (for a qualified service person only)

SiUS711114

4. Fix the air filter. If the air filter is washed, remove water completely and allow to dry for 20 to 30 minutes in the shade. When dried completely, install the air filter back in place.

Note:

•

Be sure to install the air filter after servicing. (Missing air filter causes clogged heat exchanger core.) The air filter is an optional item and the replacement is available. 5. Put the service cover back securely in place. To reset the filter indicator on the remote controller, press Menu/OK button and select “Reset Filter Indicator” on the main menu screen.

Consult your dealer if you want to change the time setting for when the filter sign goes on. Note:

13

•

Do not remove the air filter except when cleaning. Breakdown may occur.

Maintenance

SiUS711114

1.2

Maintenance (for a qualified service person only)

How to Clean the Heat Exchanger Core  CLEANING FREQUENCY AT LEAST ONCE EVERY 2 YEARS (FOR GENERAL OFFICE USE) (CLEAN THE CORE MORE FREQUENTLY IF NECESSARY.) Warning

•

Replace the heat exchanger core if you find that the knob of the heat exchanger core is damaged or is deteriorated when cleaning. There is falling danger. 1. Remove the service cover. 2. Remove the air filter. 3. Take out the heat exchanger cores. Pull out the air filter and then pull out the 2 heat exchanger cores. 4. Use a vacuum cleaner to remove dust and foreign objects on the surface of the heat exchanger core.

Caution (During Operation)

• •

Use the vacuum cleaner equipped with a brush on the tip of the suction nozzle. Lightly the brush on the surface of the heat exchanger core when cleaning. (Do not crush the heat exchanger core while cleaning.)

•

Do not clean touching strongly with a vacuum cleaner. This may crush the mesh of the heat exchanger core. Never wash the heat exchanger core with water. Have your dealer professionally clean the filter if it is very dirty.

• •

5. Put the heat exchanger core on the rail and insert it securely in place. 6. Install the air filter securely in place. 7. Install the service cover securely in place. Caution

Maintenance

•

Always use the air filter. If the air filter is not used, the heat exchanger core will be clogged, possibly causing poor performance and subsequent failure.

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Part 4 Control Functions 1. Control Functions ......................................................................................16 1.1 List of Control Functions............................................................................. 16 1.2 Explanation of Individual Functions............................................................ 17 1.3 Layout of switches on PCB ........................................................................ 24

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Control Functions

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Control Functions

1. Control Functions 1.1

List of Control Functions Classification Function name 1. Basic functions 1.1 Ventilation (functions related to operation control basic performance) function 1.2 Abnormality control function 2. Additional 2.1 Ventilation functions mode changeover function 2.2 Automatic ventilation operation function 2.3 Ventilation capacity changeover function 2.4 Humidifier operation control function 2.5 Pre-cool/preheat function 2.6 Fresh-up function 2.7 Filter sign function 3. System control 3.1 Remote functions controller function 3.2 Group function 3.3 Air conditioner link function 3.4 Power ON operation function

4. Other functions

Note:

Control Functions

3.5 External link operation function 3.6 Centralized control function 3.7 Timer function 4.1 Troubleshooting function 4.2 Field setting function

Outline of function Controls supply air fan motor, exhaust air fan motor and damper motor. Detects abnormalities in thermistor, damper motor and data transmission to prevent errors. Operates equipment in selected ventilation mode (total heat exchange, normal, automatic). Selects the most suitable ventilation mode by controlling damper motor according to temperature controller mode, temperature setting and thermistor data. Operates equipment at set airflow rate.

Controls humidifier output based on temperature controller judgement. Note 1 Prevents equipment operation for a preset time (set time) after air conditioner is turned ON. Sets motor tap so that supply air fan airflow rate is larger than exhaust air fan airflow rate. Stores cumulative operation hour data and turns ON air filter cleaning indicator. Operates equipment according to instructions from remote controller. Operates 2 or more units based on instructions from single remote controller. Follows air conditioner ON/OFF instructions. Operates equipment when power is turned ON. Turns equipment ON and OFF according to external link terminal signal (no-voltage a). Allows remote control operation by centralized control equipment. Turns equipment ON and OFF at set time. Displays error codes to indicate locations of error.

Allows initial setting from LCD remote controller.

Note 1 Requires optional humidifier and optional printed circuit board (KRP50-2: Wiring adaptor for remote ).

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Control Functions

1.2

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Explanation of Individual Functions

1.2.1 Ventilation Operation Control Controls ventilation fan motors (supply and exhaust air fans) and damper motor. 1) Normal operation Operation chart

Remote controller indication

Energy recovery ventilator

Cleaning Operation time

Ventilation fan motor

Damper motor (ventilation mode)

Operation lamp

Filter sign reset Stop

Normal ventilation mode selection

ON

OFF

ON

Total heat exchange ventilation

Total heat exchange ON Normal ventilation ventilation ON

ON

Filter sign indicator

2) Direct duct connection with air conditioner Operation chart

Air conditioner

Operation

ON/OFF

Operation

Fan motor

ON

Normal ventilation mode selection

Air conditioner fan OFF

Air conditioner fan ON

Remote controller indication

Energy recovery ventilator

OFF

Note:

17

Ventilation fan motor

Damper motor (ventilation mode)

ON

Total heat exchange ventilation

OFF

ON Normal ventilation

OFF

Total heat exchange ventilation

10 sec

ON Normal ventilation

Operation lamp Lamp ON

Direct duct connection setting can be made in VRV system or using field setting mode of Energy recovery ventilator LCD remote controller.

Control Functions

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Control Functions

1.2.2 Pre-cool/Pre-heat Pre-cool/pre-heat operations require the following conditions. 1. System Pre-heat operation is possible only in air conditioner linked system (1 group, 2-group link). Check the system first. 2. Energy recovery ventilator setting Set Pre-heat ON/OFF to ON. Pre-cool/pre-heat On/OFF setting can be made in air conditioner or using field setting mode of LCD remote controller of Energy recovery ventilator. (Pre-cool time can be set between 30 and 60 min., and pre-heat time can be set between 30 and 150 min.) 3. Others a) Energy recovery ventilator must be in non-operating condition for 2 consecutive hours or more prior to pre-cool/pre-heat operation. b) Temperature control mode of the air conditioner must be set to Cool, Heat or Dry.

Energy recovery ventilator

Air conditioner

Operation

Normal ventilation Pre-cool/pre-heat mode selection time over

ON/OFF Operation

OFF

Ventilation fan motor

Remote controller indication

Control Functions

ON

Pre-cool/pre-heat ventilation

Damper motor (ventilation mode) Total heat exchange ventilation

Note:

Stop

Operation lamp

Lamp ON

Operation standby indication

Lamp ON

ON Normal ventilation

Total heat exchange ventilation

Operation standby indication is displayed only on LCD remote controller of Energy recovery ventilator.

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Control Functions

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1.2.3 Cold Area Mode Stops or lowers ventilation airflow during defrosting operation and compressor non-operating condition when equipment in heating mode, thus reducing heating load and cold air draft. Operation chart (in heating operation only)

Air conditioner

Operation

ON/OFF

Operation

Fan motor

ON

Normal ventilation mode selection

Defrosting operation or compressor in Non-defrosting operation or non-operation compressor in operation

Remote controller indication

Energy recovery ventilator

OFF

Note:

10 sec Ventilation fan motor

ON

OFF

ON

OFF

ON

OFF or lower Damper motor (ventilation mode)

Total heat exchange ventilation

ON Normal ventilation

Total heat exchange ventilation

ON Normal ventilation

Operation lamp Lamp ON

Cold area mode can set using remote controller for air conditioner or field setting mode of LCD remoter controller of Energy recovery ventilator. Protection Control Operation Control in Cold Climates To operate the unit at low outdoor air temperatures, control the air supply fans and the exhaust fans as shown below for equipment protection. Normal operation

Models applicable to outdoor air temperatures of 5˚F at minimum

Outdoor air temperature < 14°F

Outdoor air temperature > 17.6°F

Air supply fan ON for 45 min., OFF for 15 min. Outdoor air temperature < 5°F

Outdoor air temperature > 8.6°F

Air supply fan stop (∗) Exhaust fan stop (∗)

1.2.4 Air Conditioner Link Operation Link system enables simultaneous ON/OFF operation of Energy recovery ventilator and air conditioner (VRV system, SkyAir). 1) 1 group link control  Allows simultaneous ON/OFF from remote controller for air conditioner.  Allows independent operation of Energy recovery ventilator from VRV system remote controller during interim periods (not possible when direct duct connection is used). VRV system

Remote controller for air conditioner

19

Control Functions

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Control Functions

2) Link control of 2 or more groups (zone link)  Energy recovery ventilator can be operated when 1 or more air conditioners are operating.  Allows independent operation of Energy recovery ventilator from VRV-system remote controller during interim periods (direct duct connection is not allowed in this system). Group 1

Group 2

Group 3

Remote controller Remote controller Remote controller for air conditioner for air conditioner for air conditioner Adaptor PCB for remote control (KPR2A61)

Note:

Control Functions

With Super Wiring, units of different outdoor systems can be linked in operation.

20

Control Functions

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1.2.5 Field Setting, Service Mode 1. Field setting Used for initial setting of Energy recovery ventilator. 2. Service mode Used for confirmation of unit Nos. in the group and reallocation of unit Nos. List of Settings

: Factory setting

Mode No. FIRST Group Individual CODE NO. settings settings 0

1

2 17

27

3 4

SECOND CODE NO. (NOTE 1) Description of Setting

Filter cleaning time setting Night-time free cooling operation start time (after other air conditioners operating together with the unit have been stopped) Pre-cool/pre-heat ON/OFF setting Pre-cool/pre-heat time setting Fan speed initial setting Yes/No setting for direct duct connection with VRV system

5

7 8 9 0 1 2 3 18

28

4 7 8 9

21

01

02

03

04

05

06

Approx. 2500 hours

Approx. 1250 hours

No counting

–

–

–

OFF

2 hours

4 hours

6 hours

8 hours

–

OFF

ON

–

–

–

–

60 min. –

– –

– –

– –

–

–

–

–

30 min. 45 min. Normal Extra high No duct With duct (Airflow (fan OFF) setting)

Setting for cold areas (Fan No duct operation selection for heater – – Fan OFF Fan L thermo. OFF) Centralized Individual – – Centralized/individual setting Centralized zone interlock No Yes – – setting Pre-heat time extension setting 0 min. 30 min. 60 min. 90 min. Priority on Last Priority on External signal JC/J2 – command external operation input Setting for direct Power ON Auto restart setting External damper operation Indication of ventilation mode/ Not indication

With duct Fan OFF

Fan L

–

–

–

–

–

–

–

–

OFF OFF –

ON – – – – ON – – – – – ON – – – No Indication – – – – Indication No No – – Fresh up air supply/exhaust Indication Indication Indication Indication setting Supply Exhaust Supply Exhaust – – External input terminal function Overall Overall Forced Fan forced Airflow selection (between J1 and JC) Fresh up alarm error OFF OFF increase KRP50-2 output switching Fan – – – – selection (between 1 and 3) ON/OFF Abnormal Preceding Preceding Electric heater setting No delay No delay ON, OFF ON, OFF – – delay delay “Fresh up” ON/OFF setting OFF ON – – – –

19

29

8

1a

–

0

Note:

1. The settings are applied to the entire group, but if the mode No. individual settings is selected, the settings can be applied to individual unit. However, it is only possible to check any changes made to individual setting in individual mode. (For group control, the changes are made but the display remains as it was when shipped from the factory.) 2. Do not set anything not shown above. If the applicable functions are not available, they will not be displayed. 3. Group number setting for centralized controller (1) Mode No. 00: Group controller (2) Mode No. 30: Individual controller  Regarding the setting procedure, refer to the section “Group number setting for centralized control” in the operating manual of either the ON/OFF controller or the central controller.

Control Functions

SiUS711114

Control Functions

1.2.6 External Damper Operation (FIELD SUPPLY) Explanation of Functions

Intake of outdoor air can be prevented when ERV is switched OFF if this damper is incorporated in the system. 1. The PCB of the ERV unit supplies power for an external damper.

Control box Air discharge grille

18 in. Inspection hatch

External damper (field supply)

Thermal insulation

OA (Outdoor air from outside) Round shape hood EA (Exhaust air to outside)

Air suction grille

PCB ERV unit

External damper (field supply)

• Power supply is turned ON when the ERV unit starts operating. Power supply is turned OFF when the ERV unit is switched OFF. Power supply voltage

Connected load capacity

208V 230V

0.5A or less

Required setting changes for switchover to X15A output (see below for details)

Control Functions

22

Control Functions

Essential Wiring

SiUS711114

Connect one end of the harness to X15A on the PCB and the other end to the harness leading to the damper via a connector such as a closed connector. Control box cover Open this way

Transmission wiring

Screws

To External damper

Power supply wiring Control box Interior

Harness (AWG20: accessory) Closed connector (field supply)

Electric component mounting base

X15A PCB

Clamp (accessory)

With regard to a closed connector, select one that suits the wire size. Secure the harness with the other wires by using the clamp.

Essential Setting Changes

23

To make the X15A output available, change the field setting by the remote controller as below. Mode No.: 18 (group control) or 28 (individual control) FIRST CODE NO.: 3 SECOND CODE NO.: 03

Control Functions

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1.3

Control Functions

Layout of switches on PCB

1.3.1 PCB Layout of switches on PCB

Factory setting

Factory setting

Do not change the switch setting

1. 2. 3. 4.



Do not change the switch setting

∗

Transformer Secondary Primary Connector for supply air fan motor 5. Connector for exhaust fan motor

6. Connector for damper motor 7. Power supply 8. Terminal block 9. Connector for KPR50-2 10. Connector for limit switch

∗

11. Connector for indoor air thermistor 12. Connector for outdoor air thermistor 13. Selector switch 14. Terminals for remote controller

15. Terminals for centralized control 16. Terminals for no-voltage external input 17. Factory setting C: 3P034928-7Q

 SS1 has already been set to “NOR” at factory. The unit will not run if the setting is changed.

Control Functions

24

Control Functions

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1.3.2 Function of main connection terminal

Input from outside

Centralized remote controller

Remote controller

Power supply

Terminal No.

25

Contents of function Single phase 208 – 230 V 60Hz Power supply and ground terminal

L N TeS1

Connection terminal for remote controller for Energy recovery ventilator. This terminal is used to receive information of the indoor unit for interlocked operation. P1 P2

This terminal is used to receive information when centralized controller is connected.

F1 F2

Between terminal no. (J1) ~ (JC) Used for “fresh up operation” by external input. Between terminal no. (J2) ~ (JC) Used for Operation / Stop by external input. J1 J2 JC

Control Functions

SiUS711114

Part 5 Service Diagnosis 1. Troubleshooting ........................................................................................27 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20

Service Diagnosis

Error Code Display ..................................................................................... 27 Overall Alarm.............................................................................................. 29 Overall Error ............................................................................................... 30 Indoor Air Thermistor Error......................................................................... 31 Outdoor Air Thermistor Error...................................................................... 32 Damper System Error (Alarm).................................................................... 33 Damper System Error (Alarm).................................................................... 35 Dedicated LCD Remote Controller............................................................. 36 Transmission Error between Remote Controller and Main Unit ................. 38 Transmission Error (Remote Controller) .................................................... 40 Transmission Error between Main Remote Controller and Sub Remote Controller............................................................................... 41 Field Setting Error ...................................................................................... 42 Duplication of Centralized Remote Controller ............................................ 43 Main Unit PCB Abnormality........................................................................ 44 Dedicated LCD Remote Controller............................................................. 46 How to Check ............................................................................................. 47 Thermistor .................................................................................................. 48 Power Transformer..................................................................................... 49 Damper Motor ............................................................................................ 51 Check ......................................................................................................... 52

26

Troubleshooting

SiUS711114

1. Troubleshooting 1.1

Error Code Display Operation

1

• If an error occurs, either one of the following items will blink in the basic screen. “Error: Push Menu button” ∗ The operation lamp will blink. “Warning: Push Menu button” ∗ The operation lamp will not blink. • Press Menu/OK button. Operation lamp

2

• The error code will blink and the service and model name or code may appear. • Notify your Daikin dealer of the Error code and model name or code.

List of error codes of Remote controller of the ERV-system (The error codes displayed on remote controller are with two digits and not with four digits.) Error Code 60 64 65 6A 6A 88 U5 U5 U8 UA UC UE

Description

Reference page

Overall alarm Overall error Indoor air thermistor error Outdoor air thermistor error Damper system error (Alarm) Damper system error (Alarm)

29 30 31 32 33 33

Dedicated LCD remote controller Transmission error between remote controller and main unit Transmission error (Remote controller) Transmission error between main remote controller and sub remote controller Field setting error Duplication of centralized remote controller Transmission error between the unit and centralized controller

36 38 40 41 42 43 —

In case of the error with the code in white letters on the black background in the unit still operates. However, be sure to have it inspected and repaired as soon as possible. If other than the above error codes are displayed, there is a possibility that the problem in question has occurred with an interlocked air conditioner or outdoor unit. See the operation manuals included with the air conditioners or outdoor units for details. Note: If no code is shown on the remote controller display, there is a possibility of following errors. • The power supply to the unit is off. • The indoor unit and/or ERV have not been wired for power supply. • Incorrect wiring for the remote controller, the transmission wiring and/or the FORCED OFF wiring. • The remote controller wiring is disconnected. • Incorrect setting the “SS1” switch of PCB. 27

Service Diagnosis

SiUS711114

Troubleshooting

Main Unit PCB

LED A (Micro-computer Operation Monitor)

Service Diagnosis

28

Troubleshooting

1.2

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Overall Alarm

60

Remote Controller Display Method of Error Detection

Abnormalities are detected based on external input terminals (J1-JC).

Error Decision Conditions

When external input terminal (J1-JC) short-circuit during operation (“Overall Alarm” must be set in field setting mode (1)).

Supposed Causes

 Defective external device  Broken wire  Defective control PCB

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Is connected external device operating properly?

NO

Remove the cause of error in connected external device.

YES

Measure the resistance between external input terminals (J1-JC).

Is the resistance 200 Ω or lower?

NO

YES

Check wires for abnormalities (broken wire, defective , etc.).

Replace the control PCB.

Note:

1: Refer to the field setting mode P.21 Mode No. 18 First Code No. 8 Second Code No. 02

{

29

Service Diagnosis

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1.3

Troubleshooting

Overall Error

60

Remote Controller Display Method of Error Detection

Abnormalities are detected based on external input terminals (J1-JC).

Error Decision Conditions

When external input terminal (J1-JC) short-circuit during operation (“Overall Error” must be set in field setting mode (1)).

Supposed Causes

 Defective external device  Broken wire  Defective control PCB

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Is connected external device operating properly?

NO

Remove the cause of error in connected external device.

YES

Measure the resistance between external input terminals (J1-JC).

Is the resistance 200 Ω or lower?

NO

YES

Check wires for abnormalities (broken wire, defective , etc.).

Replace the control PCB.

Note:

1: Refer to the field setting mode P.21 Mode No. 18 First Code No. 8 Second Code No. 03

{

Service Diagnosis

30

Troubleshooting

1.4

SiUS711114

Indoor Air Thermistor Error

Remote Controller Display

64

Method of Error Detection

Temperature detected by indoor air thermistor is used to detect errors.

Error Decision Conditions

When value detected by indoor air thermistor is -40ºC or below (open circuit) or 70ºC or higher (short circuit).

Supposed Causes

   

Defective thermistor Broken wire Defective control PCB Defective in connector

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Remove the thermistor (R1T) from X12A (3P) on control PCB, and measure the resistance.

Is the thermistor normal? CHECK 4

NO

Replace the indoor air thermistor.

YES

If there is no defective , replace the control PCB.

CHECK 4 Refer to P.52.

31

Service Diagnosis

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1.5

Troubleshooting

Outdoor Air Thermistor Error

Remote Controller Display

65

Method of Error Detection

Temperature detected by outdoor air thermistor is used to detect errors.

Error Decision Conditions

When value detected by outdoor air thermistor is -40ºC or below (open circuit) or 70ºC or higher (short circuit).

Supposed Causes

   

Defective thermistor Broken wire Defective control PCB Defective in connector

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Remove the thermistor (R2T) from X13A (2P) on control PCB, and measure the resistance.

Is the thermistor normal? CHECK 4

NO

Replace the outdoor air thermistor.

YES

If there is no defective , replace the control PCB.

CHECK 4 Refer to P.52.

Service Diagnosis

32

Troubleshooting

1.6

SiUS711114

Damper System Error (Alarm)

6A

Remote Controller Display Method of Error Detection

Measurement of damper motor limit ON/OFF time.

Error Decision Conditions

 When damper motor limit switch 1 (or 2) remains ON (or OFF) for more than a certain time duration after ventilation mode is changed.  When damper motor limit switch 1 (or 2) repeats ON/OFF operations after damper motor 1 (or 2) stops.

Supposed Causes

   

Defective damper motor or limit switch Broken wire in cable Defective in connector (including relay connector) Defective control PCB

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Is the relay connector of damper motor unit connected?

NO

Connect the relay connector.

YES

Check the connectors (X3A or X4A) (X5A or X6A) on PCB of damper motor unit.

Are the connectors connected?

NO

Connect the connectors.

NO

Replace the damper motor unit.

YES

Is the damper motor unit operating normally? (∗1) YES

Replace the control PCB.

Note:

33

1:  Place tester probes on connectors of limit switch. Move switch by hand and check continuity. If tester indicates 0 when limit switch turns ON, and infinity when it turns OFF, limit switch is normal.

Service Diagnosis

SiUS711114

Troubleshooting

 Place tester probes on connectors of damper motor and check the resistance. If tester indicates approx. 17 k in 200V model, damper motor is normal.

Check the resistance and voltage

Service Diagnosis

34

Troubleshooting

1.7

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Damper System Error (Alarm)

Remote Controller Display

6A

Method of Error Detection

Measurement of damper motor limit switch ON/OFF time and temperatures detected by outdoor and indoor air thermistor.

Error Decision Conditions

 When damper system error (alarm) and indoor (or outdoor) thermistor error are generated at the same time.  When damper system error (alarm) occurs and values of indoor and outdoor air thermistor meet frost conditions.

Supposed Causes

      

Defective damper motor or limit switch Defective indoor air thermistor Defective outdoor air thermistor Frosting Broken wire in cable Defective in connector (including relay connector) Defective control PCB

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Check error record on error history display in service mode.

Are "6A" and "64" or "65" recorded?

NO

Take corrective measures specified for damper system error (alarm). (Remove the cause of problem, and reset display.)

NO

Take corrective measures specified for damper system error (alarm) and indoor and outdoor air thermistor errors.

NO

Take corrective measures specified for damper system error (alarm) and outdoor air thermistor error.

YES

Are "64" and "65" recorded? YES

Is "64" recorded? YES

Take corrective measures specified for damper system error (alarm) and indoor and outdoor air thermistor error.

35

Service Diagnosis

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1.8

Troubleshooting

Dedicated LCD Remote Controller

Remote Controller Display Method of Error Detection

88 When “

88” remains on remote controller display.

Error Decision Conditions Supposed Causes

 Main-sub setting of remote controller abnormality  Defective remote controller PCB  Defective main unit PCB

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Check to see if main-sub remote controller is used.

Is main-sub remote controller used?

YES

Change main-sub selection switch to set proper main-sub relation. One should be set to Main, and the other set to Sub.

YES

Replace the remote controller.

NO

Check micro-computer operation monitor on main unit PCB. NO

Is it blinking? NO

Replace the main unit PCB.

Service Diagnosis

36

Troubleshooting

SiUS711114

Dedicated Remote Controller

Remote controller PCB

Main Unit PCB

LED A (Micro-computer Operation Monitor)

•

37

The settings of the BRC1E71 remote controller should be switched while referring to the manual supplied with the remote controller.

Service Diagnosis

SiUS711114

1.9

Troubleshooting

Transmission Error between Remote Controller and Main Unit

U5

Remote Controller Display Method of Error Detection

Micro-computer checks if data is transmitted properly between main unit and remote controller.

Error Decision Conditions

When data transmission is not performed correctly for a certain time period.

Supposed Causes

 Defective connection of remote controller cable  Defective remote controller cable  External factor (noise, etc.)

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Check the connection of remote controller cable to control PCB.

Is the connection cable between main unit and remote controller properly wired?

NO

Correct the wiring.

YES

Is the remote controller cable normal? (*1)

NO

Replace the remote controller cable.

YES

Possibility an external factor (instead of equipment error).

Note:

Service Diagnosis

1: 1. Use tester to check continuity of remote controller cable.  Disconnect cable from main unit PCB and remote controller PCB. Measure the resistance between wires in cable. Resistance should be M(infinity). 2. Use tester to check voltage on PCB. Check with power turned ON.  With remote controller cable disconnected, voltage between P1 and P2 on PCB should be approx. 16 VDC. If measured value is not approx. 16 VDC, PCB is defective.

38

Troubleshooting

SiUS711114

 Connect remote controller cable and disconnect remote controller. Voltage at the end of remote controller cable should be approx. 16 VDC. If measured value is not 16 VDC, remote controller cable is defective.  Connect remote controller cable and remote controller. Voltage between P1 and P2 on remote controller PCB should be approx. 16 VDC. If measured valued is not 16 VDC, remote controller is defective.

P1 P2 JC J2 J1 F2 F1 P2 P1

Main unit PCB

39

Remote controller Remote controller for Energy recovery ventilator

Service Diagnosis

SiUS711114

Troubleshooting

1.10 Transmission Error (Remote Controller) Remote Controller Display

U5

Method of Error Detection

Micro-computer checks if data is transmitted properly between main unit and remote controller.

Error Decision Conditions

When data transmission is not performed correctly for a certain time period.

Supposed Causes

 Erroneous connection  Defective remote controller setting  Defective remote controller

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Is remote controller other than dedicated remote controller connected to remote controller cable?

NO

Correct the wiring.

NO

Replace the remote controller.

NO

Set one main-sub selection switch to Main, and set the other to Sub. Then turn OFF power, and restart operation.

YES

Is main-sub remote control used? YES

Is main-sub selection switch properly set? YES

Replace either main or sub remote controller.

Service Diagnosis

40

Troubleshooting

SiUS711114

1.11 Transmission Error between Main Remote Controller and Sub Remote Controller Remote Controller Display

U8

Method of Error Detection

Micro-computer checks if data is transmitted properly between main-sub remote controller.

Error Decision Conditions

When data transmission is not performed correctly for a certain time period.

Supposed Causes

 Defective remote controller setting  Defective remote controller

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Is mainsub remote control used? YES

NO

Is main-sub selection switch set to Main?

NO

Set the main-sub selection switch to Main. Turn OFF power, then restart.

YES Replace remote controller. Is main-sub selection switch properly set? YES

NO

Set one main-sub selection switch to Main, and set the other to Sub. Then turn OFF power, and restart operation. Replace either main or sub remote controller.

41

Service Diagnosis

SiUS711114

Troubleshooting

1.12 Field Setting Error

UA

Remote Controller Display Method of Error Detection Error Decision Conditions

 Defective combination of remote controller  More than 16 units connected to remote controller cable.  Defective remote controller

Supposed Causes

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Is the combination of remote controller and Energy recovery ventilator (air conditioner) correct? (∗1)

NO

Check the system, and correct connections.

YES

Are 17 or more units connected to remote controller cable?

NO

YES

Change the connections so that 16 or fewer units are connected to remote controller cable.

Replace the remote controller.

Note:

1: Combination-Correct or Wrong Main body Energy recovery ventilator only Energy recovery ventilator only Energy recovery ventilator + air conditioner Energy recovery ventilator + air conditioner

Service Diagnosis

Remote controller Energy recovery ventilator Air conditioner Energy recovery ventilator Air conditioner

Correct/Wrong Correct Correct Wrong Correct

42

Troubleshooting

SiUS711114

1.13 Duplication of Centralized Remote Controller Remote Controller Display

UC

Method of Error Detection

Remote controller micro-computer checks for double-setting of addresses.

Error Decision Conditions

When same address is set to 2 or more units.

Supposed Causes

 Overlapping of centralized control address  Defective remote control

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Change centralized address settings using remote controller. Then, turn OFF the power supply, and turn ON the power again.

Does equipment reset properly?

NO

Replace the remote controller.

YES End of correction procedure.

43

Service Diagnosis

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Troubleshooting

1.14 Main Unit PCB Abnormality Method of Error Detection

Check micro-computer operation monitor.

Error Decision Conditions

When main unit PCB does not operate. When communication circuit errors.

Supposed Causes

   

Defective fuse (10A or more) Defective power transformer (275°F or more) Noise Defective main unit PCB

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Turn OFF the power supply and turn ON the power again.

Does the equipment reset properly.

YES

Noise may be causing erroneous operation. If power reset does not solve the problem, replace the main unit PCB.

NO

With remote controller disconnected, check the micro-computer operation monitor.

Is it blinking?

NO

Is monitor indicator OFF?

YES

NO

YES

There may be an error in main unit PCB fuse, main unit PCB or power transformer. Check the fuse and transformer. If they are normal, replace the PCB.

Monitor indicator remains ON. Replace the main unit PCB. Check the other possible causes

Normal

Replace the main unit PCB.

Abnormal Replace the defective parts.

Service Diagnosis

44

Troubleshooting

SiUS711114

Main unit PCB

LED A (Micro-computer Operation Monitor)

45

Service Diagnosis

SiUS711114

Troubleshooting

1.15 Dedicated LCD Remote Controller When no indication is displayed on remote controller

Method of Error Detection

Check to see if remote controller displays indication.

Error Decision Conditions Supposed Causes Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Disconnect remote controller cable from both main unit PCB and remote controller PCB. Using tester, check continuity between 2 wires in cable.

Check 1 Is measured value ∞ MΩ (infinity)?

NO

There may be short circuit in remote controller cable.

YES With remote controller cable disconnected from main unit PCB, check voltage between P1 and P2 on main unit PCB.

Check 2 Is measured value approx. 16 VDC?

NO

Replace the main unit PCB.

YES Connect remote controller cable to main unit PCB, and disconnect remote controller. Check voltage at the end of cable on remote controller side.

Check 3 Is measured value approx. 16 VDC?

NO

There may be broken wiring in remote controller cable.

YES Replace the remote controller PCB.

CHECK 1

Service Diagnosis

CHECK 2

CHECK 3 Refer to P.47

46

Troubleshooting

SiUS711114

1.16 How to Check CHECK 1

Dedicated remote controller (Option)

JC

J2

J1

F2

F1

P2

P1

Main unit PCB

CHECK 2

Dedicated remote controller (Option)

JC

J2

J1

F2

F1

P2

P1

Main unit PCB

CHECK 3

Dedicated remote controller (Option)

P1 P2 JC

J2

J1

F2

F1

P2

P1

Remote controller

Main unit PCB

47

Remote controller for Energy recovery ventilator

Service Diagnosis

SiUS711114

Troubleshooting

1.17 Thermistor Method of Error Detection

Remove thermistor and check resistance with tester.

Error Decision Conditions Supposed Causes

   

Defective thermistor Broken wire Defective control PCB Defective in connector

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Remove thermistor from main unit PCB (X12A, X13A), and check the resistance using tester.

Is the resistance as shown below?

NO

If measured value deviates significantly from values in the table, thermistor is defective.

YES

Thermistor is normal.

CHECK 4 Refer to P.52.

Service Diagnosis

48

Troubleshooting

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1.18 Power Transformer Method of Error Detection

Check the resistance and voltage with tester, and insulation resistance with megger.

Error Decision Conditions Supposed Causes

 Defective power transformer (275°F or more)

Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Check the resistance of primary side of transformer.

Does the measured resistance deviate significantly from values shown below?

YES

Transformer is defective.

YES

Transformer is defective.

YES

Transformer is defective.

NO

Check the resistance of secondary side of transformer.

Does the measured resistance deviate significantly from values shown below? NO

Apply rated voltage to primary side of transformer, and check the output voltage of secondary side of transformer.

Does the measured voltage deviate significantly from values shown below?

NO Transformer is normal

49

Service Diagnosis

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Troubleshooting

 Resistance of primary side of transformer: approx. 140  Resistance of secondary side of transformer: approx. 1.9  Voltage at secondary side of transformer when rated voltage is applied to primary side: approx. 26 VAC  Insulation resistance between primary side of transformer and case: 100 M or higher  Insulation resistance between secondary side of transformer and case: 100 M or higher  Insulation resistance between primary side and secondary side of transformer: 100 M or higher Check the resistance and voltage

Service Diagnosis

50

Troubleshooting

SiUS711114

1.19 Damper Motor Method of Error Detection

Check the damper motor and limit switch when damper motor does not operate.

Error Decision Conditions Supposed Causes Troubleshooting Caution

Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.

Place tester probes at connectors of limit switch, and check continuity while moving switch by hand.

Is the measured value 0 Ω when limit switch turns ON, and infinity when it turns OFF?

NO

Limit switch is defective.

YES

Place tester probes on connectors of damper motor and check resistance.

Is the measured value of EJ type approx. 17 kΩ?

NO

Damper motor is defective.

YES

Damper motor is normal.

Check the resistance and voltage — DAMPER MOTOR

51

Service Diagnosis

SiUS711114

Troubleshooting

1.20 Check CHECK 4 Thermistor temperature - resistance conversion table Thermistor Thermistor resistance temperature 14ºF or more 108k or more 23ºF Approx. 85k 32ºF Approx. 66k 41ºF Approx. 51k 50ºF Approx. 40k 57ºF Approx. 33k 61ºF Approx. 30k 64ºF Approx. 28k 68ºF Approx. 25k

Thermistor temperature 72ºF 75ºF 79ºF 82ºF 86ºF 95ºF 122ºF or more

Thermistor resistance Approx. 23k Approx. 21k Approx. 19k Approx. 18k Approx. 16k Approx. 13k 7k or less

(AD87A001J) If measured value deviates significantly from above values, thermistor is defective. Use the tester to check resistance Continuity check

Service Diagnosis

52

SiUS711114

Part 6 Supplementary Explanation 1. Service Mode ............................................................................................54 1.1 BRC1E71 ................................................................................................... 54

53

Supplementary Explanation

SiUS711114

Service Mode

1. Service Mode 1.1

BRC1E71 Operating the remote controller allows service data to be acquired and various services to be set.

Basic screen is displayed. Press Cancel button once.

Press and hold Cancel button for 4 seconds or more.

Press Cancel button.

Service settings menu is displayed. Press and hold Cancel button for 4 seconds or more. Select the desired item from the Maintenance menu, and then press Menu/OK button. Maintenance

menu is displayed. Maintenance Menu 2.1. Model Name

2.2. Operating Hours

2.3. Indoor Unit Status

Supplementary Explanation

Press Cancel button. Item 2 1. Unit No. 2. Indoor unit 3. Outdoor unit 1. Unit No. 2. Indoor unit operating time 3. Indoor unit fan operation 4. Indoor unit energized time 5. Outdoor unit operating time 6. Outdoor unit fan 1 operation 7. Outdoor unit fan 2 operation 8. Outdoor comp. 1 operation 9. Outdoor comp. 2 operation 1. Unit No. 2. FAN 3. FLAP 4. Speed 5. EV 6. MP 7. EH 8. Hu 9. TBF

Item 2 is displayed.

Select the desired Unit No. using the / (Up/Down) buttons. The corresponding data will be displayed.

Remarks Select the Unit No. you want to check.

Select the Unit No. you want to check. All of these are displayed in hours.

Select the Unit No. you want to check. Fan tap Swing, fixed Fan speed (rpm) Degree that electronic expansion valve is open (pls) Drain pump ON/OFF Electric heater ON/OFF Humidifier ON/OFF Anti-freezing control ON/OFF 54

Service Mode

SiUS711114

Maintenance Menu 2.3. Indoor Unit Status

Item 2 10.FLOAT 11.T1/T2 12.Unit No. 13.Th1 14.Th2 15.Th3

16.Th4 17.Th5 18.Th6 2.4. Outdoor Unit Status 1. Unit No. 2. FAN step 3. COMP 4. EV1 5. SV1 6. Th1 7. Th2 8. Th3 9. Th4 10.Th5

2.5. Forced Defrost (SkyAir only) 2.6. Error Display

2.7. Swap Unit No. 2.8. Addressed Sensor Value

55

11.Th6 1. Forced defrost ON 2. Forced defrost OFF 1. Display Warning ON 2. Display Warning OFF 3. Display Error ON 4. Display Error OFF 1. Current Unit No. 2. Transfer Unit No.  Unit No.: 0 - 15  Code 00: 01: 02: 03: 04: 05: 06: 07: 08: 09:  Data

Remarks

Select the Unit No. you want to check. SkyAir VRV Suction air thermistor Suction air thermistor Heat exchanger Heat exchanger liquid thermistor pipe thermistor — Heat exchanger gas pipe thermistor Discharge air thermistor Discharge air thermistor — — — — Select the Unit No. you want to check. Fan tap Compressor power supply frequency (Hz) Degree that electronic expansion valve is open (pls) Solenoid valve ON/OFF SkyAir VRV Outdoor air thermistor — Heat exchanger — thermistor Discharge pipe — thermistor Heat exchanger deicer — thermistor Heat exchanger gas — pipe thermistor Liquid pipe thermistor — Enables the forced defrost operation. Disables the forced defrost operation. Displays a warning on the screen if an error occurs. No warning is displayed. Displays the error on the screen. Displays neither errors nor warnings. A unit No. can be transferred to another. Select the Unit No. you want to check. Remote controller thermistor (°F) Suction air thermistor (°F) Heat exchanger liquid pipe thermistor (°F) Heat exchanger gas pipe thermistor (°F) Indoor unit address No. Outdoor unit address No. Branch Selector unit address No. Zone control address No. Cooling/Heating batch address No. Demand/low-noise address No. The corresponding data will be displayed, based on the Unit No. and Code selected.

Supplementary Explanation

SiUS711114

Part 7 Appendix 1. Wiring Diagram .........................................................................................57 1.1 VAM300GVJU / VAM470GVJU / VAM600GVJU ....................................... 57 1.2 VAM1200GVJU .......................................................................................... 58

Appendix

56

K1R~K3R K4R~K6R K7R K9R M1F

L1-RED A1P C1 • C2 F1U F1UT • F2UT

X15A

K9R

X1A

T1R X1M X2M

M2F M1S R1T R2T S1C SS1

M M1F 1~ F1UT

X10A

M M2F 1~ F2UT

X11A

CN50

X3A

K7R

C1

X10A X9A

SS1

C2

X2M

A1P

X15A

T1R

P2 P1

WIRED REMOTE CONTROLLER

CONTROL BOX NOTE)3 TO CONNECTION WIRING AND CENTRALIZED REMOTE CONTROLLER

NOTE)4

X1M

EXTERNAL OUTPUT TERMINALS CAPACITY 24V

3D073269C

NOTE) 1. : TERMINAL, : CONNECTOR, : TERMINAL BLOCK 2. : FIELD WIRING, : PROTECTIVE GROUND, : GROUND 3. IN CASE USING CENTRALIZED REMOTE CONTROLLER, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED MANUAL. 4. WHEN CONNECTING EXTERNAL INPUTS, FRESH UP OR ON/OFF CONTROL OPERATION CAN BE SELECTED. ( THAT CAN ENSURE THE MINIMUM APPLICABLE LOAD OF 12 V DC, 1mA) 5. IN CASE USING ADAPTOR PCB, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED MANUAL. 6. SS1 (A1P) HAS ALREADY BEEN SET TO "NOR." AT FACTORY. THE UNIT WILL NOT RUN IF THE SETTING IS CHANGED. 7. SYMBOLS SHOW AS FOLLOWS; BLK: BLACK, RED: RED, BLU: BLUE WHT: WHITE, YLW: YELLOW, ORG: ORANGE, GRN: GREEN. TERMINAL BLOCK (FOR EXTERNAL OUTPUT) X9A • X10A CONNECTOR (FOR KRP50-2) TeS10 OPTIONAL CONNECTOR X15A CONNECTOR (FOR EXTERNAL DAMPER) CONNECTOR OPTIONAL ACCESSORIES X11A (POWER SUPPLY FOR ADAPTOR) ADAPTOR PCB FOR WIRING (KRP50-2) Ry1 MAGNETIC RELAY (ON/OFF) Ry2 MAGNETIC RELAY (HUMIDIFIER OPERATION)

S1C

X5A

P2

P1

F1

J1 F2

J2

X2M JC

ADAPTOR PCB FOR WIRING (KRP50-2) Note)5 (OPTIONAL ACCESSORY) TeS10 1 Ry1 2 Ry2 3

SS1 NOTE)6 NOR. H M

MSW M1S

GRN/YLW

C2

FC2 FH2 FM2 FL2

K4R K5R K6R

X9A

MOTOR (EXHAUST AIR FAN MOTOR) MOTOR (DAMPER MOTOR) THERMISTOR (INDOOR AIR) THERMISTOR (OUTDOOR AIR) LIMIT SWITCH (DAMPER MOTOR) SELECTOR SWITCH (FOR SPECIAL USE) TRANSFORMER (208/230V, 25V) TERMINAL BLOCK (POWER SUPPLY) TERMINAL BLOCK (CONTROL)

GRN/YLW

C1

X2A

X13A

FC1 FH1 FM1 FL1

K1R K2R K3R

L2-BLU PRINTED CIRCUIT BOARD CAPACITOR (M1F • M2F) FUSE (B , 10A, 250V) THERMAL FUSE (250V, 10A, 306°F) (M1F • M2F BUILT-IN) MAGNETIC RELAY (M1F) MAGNETIC RELAY (M2F) MAGNETIC RELAY (M1S) MAGNETIC RELAY (EXTERNAL DAMPER) MOTOR (SUPPLY AIR FAN MOTOR)

BLU

BLU

X8A

RED

RED

RED

X12A

BLK BLK

T1R t°

F1U

N

BLU BLU

X7A

BLU

ORG ORG

RED

L

t°

YLW

A1P

t°

WHT RED RED

RED

R2T

BLK BLK

R1T

BLU BLU

X1M L1 L2

ORG ORG

L1 L2

YLW

57 WHT WHT WHT

1.1

RED RED

POWER SUPPLY ~ 208/230V

Wiring Diagram SiUS711114

1. Wiring Diagram VAM300GVJU / VAM470GVJU / VAM600GVJU

Appendix

K1R~K3R K4R~K6R K7R • K8R K9R M1F • M3F M2F • M4F

X2A

M 1~ t°

FC2 FH2 FM2 FL2

M1F F1UT

X1A

K4R K5R K6R

M 1~ t°

M1S • M2S R1T R2T Ry1~Ry3 Ry4~Ry6 S1C • S2C SS1 T1R X1M X2M X9A • X10A X15A

GRN/YLW M2F F2UT

C1

M2S

S2C

P2 P1

C3

WIRED REMOTE CONTROLLER

M

C4

C3

C2

X1M

A2P

SS1X15A A1P X10A X9A X2M

T1R

M 1~

GRN/YLW

C4

WHT

3D073270C

NOTE) CONTROL BOX MOTOR (DAMPER MOTOR) 1. : TERMINAL, : CONNECTOR, : TERMINAL BLOCK THERMISTOR (INDOOR AIR) 2. : FIELD WIRING, : PROTECTIVE GROUND, : GROUND THERMISTOR (OUTDOOR AIR) 3. IN CASE USING CENTRALIZED REMOTE CONTROLLER, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED MANUAL. 4. WHEN CONNECTING EXTERNAL INPUTS, FRESH UP OR ON/OFF CONTROL OPERATION CAN BE SELECTED. MAGNETIC RELAY (M3F) ( THAT CAN ENSURE THE MINIMUM APPLICABLE LOAD OF 12 V DC, 1mA) MAGNETIC RELAY (M4F) 5. IN CASE USING ADAPTOR PCB, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED MANUAL. LIMIT SWITCH (DAMPER) 6. SS1 (A1P) HAS ALREADY BEEN SET TO "NOR." AT FACTORY. THE UNIT WILL NOT RUN IF THE SETTING IS CHANGED. SELECTOR SWITCH (FOR SPECIAL USE) 7. SYMBOLS SHOW AS FOLLOWS; BLK: BLACK, RED: RED, BLU: BLUE WHT: WHITE, YLW: YELLOW, ORG: ORANGE, GRN: GREEN. OPTIONAL ACCESSORIES CONNECTOR FOR OPTIONAL PARTS TRANSFORMER (208/230V, 25V) CONNECTOR (POWER SUPPLY FOR ADAPTOR) TERMINAL BLOCK (POWER SUPPLY) ADAPTOR PCB FOR WIRING (KRP50-2) X11A MAGNETIC RELAY (ON/OFF) TERMINAL BLOCK (CONTROL) Ry1 MAGNETIC RELAY (HUMIDIFIER OPERATION) CONNECTOR (FOR KRP50-2) Ry2 TERMINAL BLOCK (FOR EXTERNAL OUTPUT) CONNECTOR (FOR EXTERNAL DAMPER) TeS10

MSW

GRN/YLW M1S

S1C MSW

C2

Ry4 Ry5 Ry6

M3F GRN/YLW M4F F3UT 1~t° F4UT NOTE)3 TO CONNECTION WIRING AND C1

NOTE)4

Ry1 Ry2 Ry3 FC3 FH3 FM3 FL3 FC4 FH4 FM4 FL4 X2A

N

RED RED

X1A

EXTERNAL OUTPUT TERMINALS A2P L CAPACITY F2U 24V X3A

SS1 NOTE)6 X16A NOR. H M X2M JC J2 J1 F2 F1 K7R K8R P1 X5A X6A P2 X4A

X11A

X3A

X10A

FC1 FH1 FM1 FL1

X9A

K1R K2R K3R

L2-BLU PRINTED CIRCUIT BOARD (CONTROL) PRINTED CIRCUIT BOARD (INTERFACE) CAPACITOR (M1F~M4F) FUSE ( B , 10A, 250V) (A1P, A2P) THERMAL FUSE (250V, 10A, 306°F) (M1F~M4F BUILT-IN) MAGNETIC RELAY (M1F) MAGNETIC RELAY (M2F) MAGNETIC RELAY (M1S · M2S) MAGNETIC RELAY (EXTERNAL DAMPER) MOTOR (SUPPLY AIR FAN MOTOR) MOTOR (EXHAUST AIR FAN MOTOR)

X15A

L1-RED A1P A2P C1~C4 F1U • F2U F1UT~F4UT

BLU

K9R

RED

RED

BLU

BLK

BLK

X8A

BLU

BLU

T1R RED t°

YLW

BLK BLK

RED BLU

ORG ORG

X7A

X13A

X12A

WHT RED RED

RED

N

BLK BLK

L F1U

BLU BLU

BLU BLU

A1P

t°

t°

YLW

YLW

R2T

ORG ORG

WHT RED

R1T

WHT WHT WHT

BLK

RED

X1M L1 L2

RED RED

ORG ORG

ADAPTOR PCB FOR WIRING (KRP50-2) Note)5 (OPTIONAL ACCESSORY) TeS10 1 Ry1 2 Ry2 3 CN50

WHT WHT

BLU

BLK

POWER SUPPLY ~ 208/230V

RED RED

ORG BLU

Appendix YLW

1.2

ORG

L1L2

SiUS711114 Wiring Diagram

VAM1200GVJU

58

Wiring Diagram

59

SiUS711114

Appendix

 Daikin products are manufactured for export to numerous countries throughout the world. Prior to purchase, please confirm with your local authorized importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used. This statement does not purport to exclude, restrict or modify the application of any local legislation.  Ask a qualified installer or contractor to install this product. Do not try to install the product yourself. Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.  Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.  Read the 's Manual carefully before using this product. The 's Manual provides important safety instructions and warnings. Be sure to follow these instructions and warnings. If you have any inquiries, please your local importer, distributor and/or retailer.

Daikin, Daikin AC Absolute Comfort, and its design, VRV, REFNET, and Quaternity are trademarks of Daikin Industries, LTD. All rights reserved.

Cautions on product corrosion 1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced. 2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided. If you need to install the outdoor unit close to the sea shore, your local distributor. Organization: DAIKIN INDUSTRIES, LTD. AIR CONDITIONING MANUFACTURING DIVISION Scope of Registration: THE DESIGN/DEVELOPMENT AND MANUFACTURE OF COMMERCIAL AIR CONDITIONING, HEATING, COOLING, REFRIGERATING EQUIPMENT, HEATING EQUIPMENT, RESIDENTIAL AIR CONDITIONING EQUIPMENT, HEAT RECLAIM VENTILATION, AIR CLEANING EQUIPMENT, COMPRESSORS AND VALVES.

Organization: DAIKIN INDUSTRIES (THAILAND) LTD. Scope of Registration: THE DESIGN/DEVELOPMENT AND MANUFACTURE OF AIR CONDITIONERS AND THE COMPONENTS INCLUDING COMPRESSORS USED FOR THEM

All of the Daikin Group’s business facilities and subsidiaries in Japan are certified under the ISO 14001 international standard for environment management.

Dealer 1645 Wallace Drive, Suite 110 Carrollton, TX75006

[email protected] www.daikinac.com

c 2011 Daikin Industries, LTD.

Specifications, designs and other content appearing in this brochure are current as of December 2011 but subject to change without notice.

SiUS711114 Printed in U.S.A. 12/2011 AK