Fujitsu AUXK018GLAH, AUXK024GLAH, AUXK030GLAH, AUXK034GLAH, AUXK036GLAH Service Manual

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Page 1

SERVICE MANUAL

Page 2

CONTENTS

1. TEST RUN

1-3 TEST RUN CONTROL................................................................................................

1-2-1 Check Items Before Power ON............................................................................

1-2-2 Check Items After Power ON...............................................................................

1-2 TEST RUN METHOD...............

...................................................................................

1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS.............................

1-2-4 Automatic address setting procedure for indoor units..........................................

01-01 01-03 01-03 01-04

01-07

1-2-3 Automatic address setting procedure for Signal amplifiers.................................. 01-06

-15

1-4 FIELD SETTING AND MONITOR MODE LIST FOR OUTDOOR UNIT..................... 01-16

2-1 INPUT / OUTPUT LIST..............................................................................................

2. OUTDOOR UNIT OPERATION CONTROL

2-2 COMPRESSOR OPERATION....................................................................................

02-01 02-02

02-02 02-03

2-2-3 Speed Range of Start,Stop,and Operation..........................................................

2-2-2 Capacity Control.................................................................................................

02-02

2-2-1 Operation / Stop Condition.................................................................................

2-5 SPECIAL OPERATION..............................................................................................

02-08 02-08 02-09

2-5-2 Pre-Heat Operation............................................................................................

2-5-1 Oil Recovery Operation......................................................................................

2-6 PROTECTIVE FUNCTION........................................................................................

02-10 02-10

2-6-1 Protective Function List......................................................................................

2-5-3 Defrost Operation Control..................................................................................

02-09

2-3 FAN CONTROL..........................................................................................................

02-04

2-4 EXPANSION VALVE CONTROL...............................................................................

02-07

02-04

2-06

2-3-3 Low noise mode..................................................................................................

02-07

2-3-4 Other Control.......................................................................................................

2-3-1 Cooling Operation...............................................................................................

02-05

2-3-2 Heating Operation...............................................................................................

1-2-5 Indoor unit connection check procedure ............................................................. 01-08

1-2-6 Test run from the outdoor Main PCB ........ ........................................................... 01-09

1-2-7 Test run from the Remote controller ..............................................................

...... 01-10

1-5 FIELD SETTING / FUNCTION SETTING FOR INDOOR UNIT.................................. 01-19

1-6 FIELD SETTING / FUNCTION SETTING FOR OUTDOOR AIR UNIT....................... 01-21

Page 3

CONTENTS

3-2 MASTER CONTROL..................................................................................................

3-1-2 "AUTO" Position...................................................................................................

3-1-1 Fan Speed Setting...............................................................................................

3-1 FAN CONTROL...............

...........................................................................................

3. INDOOR UNIT OPERATION

3-2-1,2 Operation Mode Control.....................................................................................

3-2-3,4 Auto Changeover ..............................................................................................

03-01 03-01

03-01 03-02 03-02 03-05

3-3 LOUVER CONTROL..................................................................................................

3-2-5,6,7,8 "COOL"/"HEAT”Position .............................................................................

03-08 0

3-10

3-5 DRAIN PUMP OPERATION.......................................................................................

3-4 ELECTRONIC EXPANSION VALVE CONTROL......................................................

3-6 FUNCTION..................................................................................................................

03-14 03-14 03-15

3-6-1 Auto Restart.........................................................................................................

03-15

3-6-2 Icing Protection Control.......................................................................................

03-15

3-6-3 Oil Recovery Operation.......................................................................................

03-15

03-16

3-7 TIMER CONTROL......................................................................................................

03-17

3-7-1 Wireless Remote Controller................................................................................

03-17

3-7-2 Group Remote Controller..................................................................................... 03-19

3-7-3 Wired Remote Controller..................................................................................... 03-21

3-8 DX-KIT .............................................................................................

03-25

3-8-1 System configuration .......................................................................................

03-25

3-8-2,3 Fundamental functions .................................................................................... 03-26

3-8-4 Electrical expansion valve control for DX-KIT....................................................... 03-28

3-8-5 Drain pump operation for DX-KIT .................................................................... 03-28

3-8-6 Function .................................................................................. 03-29

....

................................

3-6-4 Outdoor temperature protected operation for outdoor..........................................

Page 4

CONTENTS

5-2-1 Indoor Unit............................................................................................................

5-2 WIRING DIAGRAM....................................................................................................

5-1 REFRIGERANT CIRCUIT..........................................................................................

5. APPENDING DATA

5-3-1 Pressure sensor..................................................................................................

05-01

05-03

5-2-2 Outdoor Unit.........................................................................................................

05-18

5-3 CHARACTERISTICS OF SENSORS........................................................................

05-22

5-3-2 Thermistor resistance..........................................................................................

05-23

5-3-3 Saturation temperature and saturation pressure tables (R410A)........................

05-24

5-3-4 Temperature and pressure of refrigerant (Graph)...............................................

05-25

6. DISASSEMBLY PROCESS

4-1-2 Outdoor Unit Display...........................................................................................

4-1-1 Indoor Unit Display..............................................................................................

4-1 NORMAL OPERATION..............................................................................................

4. TROUBLE SHOOTING

4-2 ABNORMAL OPERATION.........................................................................................

4-2-1 Indoor Unit Display..............................................................................................

04-01 04-01

04-02

04-03 04-03

4-2-4 Remote Controller Display...................................................................................

4-2-3 Error Code List for Outdoor Unit..........................................................................

4-2-2 Outdoor Unit Display...........................................................................................

4-3 TROUBLE SHOOTING..............................................................................................

04-04 04-05

4-2-5 Error Code List for Simple and Wired Remote Controller...................................

04-07

4-2-6 Error Code List for Group Remote Controller......................................................

04-07

4-2-7 Troubleshooting - No Error code -

rror Code List for External Switch Controller...

..................................................

04-08

4-2-8

Error Code List for Signal Amplifier....................

.................................................

04-08

4-2-9

Error Code List for Network Convertor

......

.........

.................................................

04-08

4-2-10 .................................................

04-08

04-06

04-09

4-3-1 Trouble Shooting With Error Code (Indoor unit) ..........................................

04-09

4-4 SERVICE PARTS INFORMATION............................................................................ 04-106

5-2-3 DX-KIT .........................................................................................................

05-20

........

E .

..................

. ..

4-3-2 Trouble Shooting With Error Code (Outdoor unit) ..........................................

04-39

. ...

4-3-3 Trouble Shooting With No Error Code ..........................................

04-76

. .....................

4-3-4 Trouble Shooting for Option Parts ..........................................

04-82

...........................

....

Page 5

1. TEST RUN

Page 6

Before execution

Execution 1/2

Location decision

Execution procedure and precautions Reason

1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS

1. TEST RUN

Sleeve and insert work

Indoor unit installation

Refrigerant piping work

Drain piping work

Duct work

Heat insulation work

Electrical work

Outdoor unit foundation work

Outdoor unit installation

Refrigerant piping connection work

Air tightness test

Vacuum drying

Use new refrigerant piping of the thickness specified by the D&T manual.

Since R410A dedicated tools are necessary, prepare them in advance.

Absolutely avoid use of existing piping. If use of existing piping is unavoidable, the piping must be cleaned.

Use pipe that is not dirty inside. Confirm the design for the piping ( Diameter, Thickness ) When the pipe is left standing, protect it. Confirm the angle of separation tube and header correctly. Finish flaring exactly. Confirm the width across flats dimension and shape of flare nuts. Always blow nitrogen while brazing. Perform flushing before connecting the equipment.

Always make the downward slope of the drain pipe 1/100 or greater and make the horizontal length within 20m.

Use hard polyvinyl chloride pipe as the drain pipe. Support the drain pipe between 1.5m to 2.0m. Use pipe of 1 rank up (VP30 or greater) as central piping.

Prevention of water leakage

Foreign matter, water, etc. in the piping will cause faulty cooling and compressor trouble.

Incorrect pipe diameter will cause faulty cooling

Incorrect angle of separation tube or header will be cause poor cooling or refrigerant noise problem

Refrigerant leakage will cause low performance and abnormal stopping

Prevention of water leakage

Refrigerant leakage will cause low performance and abnormal stopping.

Mixing in of vacuum pump oil by reverse flow will cause equipment trouble.

Always use a level and keep the indoor unit level. If the equipment is tilted toward the drain port, install it so that the tilt is within 13/32in.(10mm). Excessive tilt will cause water leakage.

Select the size of the heat insulating material according to the ambient temperature and relative humidity of the refrigerant. Use a heat insulating material having a heat conductivity of 0.043W/ (m.k) or less.

When making flare connections always use a torque wrench and tighten the flare nut positively to the specified torque.

Pressurize the product with nitrogen gas up to the design pressure and conduct a 24Hr air tightness test.

Install a vacuum pump with reverse flow check mechanism or a reverse flow check adapter to a conventional vacuum pump and use.

Pump down sufficiently. Approximately 1 hour or longer after -14.5psi (-0.10MPa) reached. Allow to stand for approximately 1 hour after stopping the vacuum pump and confirm that the needle does not return.

Air purging using refrigerant is strictly prohibited.

2 3 4 5 6

2 3 4

This function is used for vacuuming the indoor unit and the connection piping.

Note: For starting Vacuuming mode, the refrigerant address setting has to be finished.

When the [vacuuming mode] is set, <Push switch setting, F3:21> EEV of connected all indoor units opens. So, the vacuuming indoor unit and piping becomes easier.

When the vacuuming ends, please turn off the power supply for all of the indoor units and the outdoor unit, [vacuuming mode] is released.

Vaccuming mode

recommend the vacuuming mode

Do not install the units in the place not recommended in the installation manual.

The performance may drop significantly due to the protection controlling

Use of a refrigerant other than the specified refrigerant will invite equipment trouble

Confirmation of Refrigerant used

Preparation of execution drawings

Confirmation of installation site

Preparation before execution

Check the characteristics of the refrigerant used and grasp the special features of the refrigerant. If refrigerant must be charged, always charge the refrigerant specified for the product.

*Confirm the product design pressure. < R410A 4.2MPa >

Prepare the design for the system

Secure the necessary pressure resistance.

When performing piping work, observe the following items so that the inside of the piping is clean and air tight.

7 8

01-01

Page 7

[Note] Perform in the power OFF state.

Execution 2/2

Set according to the length of the connection piping. Set to "Standard 40 to 65m" at the factory. Set using the push button SW on the outdoor unit main PCB. < Refer to the Page 01-17 Setting mode F2-00 > Set the pipe length to be the nearest indoor unit from the outdoor unit

Set the refrigerant circuit address and indoor unit address. Can be set by rotary SW on the indoor unit PCB ( Main PCB or Switch

PCB) or from a remote controller or from a push button SW on the outdoor unit Main PCB < Automatic address setting, Refer to the Page 01-07 Setting mode F3-11>

Initial setting

Gas leak test

Use an R410A dedicated leak tester to check for gas leaks.

Confirm the additional refrigerant amount with the installation manual, etc.

Always take the R410A refrigerant from the cylinder liquid phase and charge it using the gas phase. (Do not lay a cylinder with siphon pipe on its side.)

Use an R410A dedicated gauge manifold and charging hose. Charge refrigerant using the liquid pipe. When the defined amount of refrigerant cannot charge using the

liquid pipe, charge refrigerant using the gas pipe while opearting the cooling test run. Charge refrigerant bit by bit with cautious operation of valve for the liquid refrigerant back prevention.

If taken from the air phase, since the composition of the refrigerant which is charged will change, low performance and abnormal stop will occur easily.

Prevent erroneous sealing in of refrigerant.

A leak tester for other than R410A cannot detect leaks.

Set the refrigerant circuit address.

ROTARY SW: REF ADX10, X1

Turnover & explanation of operation

Address setting for Indoor unit

Test run & adjustment

Piping length setting

Addition refrigerant charging

Indoor unit connection check

[Note] Perform setting by push button SW on the outdoor unit Main PCB in the power ON state

after all indoor units have stopped operation.

When setting the address of Signal amplifier, please refer to the installation manual of the signal amplifier.

The address setting can be set by automatically from 1 outdoor unit on the network. < Refer to the Page 01-06 Setting mode F3-10 >

Address setting for Signal Amp

- When using signal Amps -

[Note] Manual setting: Set the rotary SW on the PCB in the power OFF state.

Automatic address setting: Perform setting by push button SW on the outdoor unit Main PCB in the

power ON state after all indoor units have stopped operation.

[Note] Perform in the power ON state after all indoor units have stopped operation

[Note] Manual setting: Set the rotary SW on the PCB in the power OFF state.

Automatic address setting: Perform setting by push button SW on the outdoor unit Main PCB in the

  power ON state after all indoor units have stopped operation.

Dual address setting No. is not allowed in one network.

When the setting is not same as the real piping length, the system may not work correctly.

Dual address setting No. is not allowed in one network.

Normal operation will not be possible without performing the indoor unit connection check.

Before starting the system, check on the number of indoor units and the total capacity. < Refer to the Page 01-08 Setting mode F3-12 >

Execution procedure and precautions Reason

Confirm the DIP SW setting SET 1: Factory setting, SET 2 : All OFF

If the DIP SW setting is wrong, the system may not work correctly

Confirm the Terminal resister setting SET 5-4 OFF: Disable, ON: Enable

If the Terminal resister setting is wrong, the system may detect transmission error

If the pipe length is set as the farthest indoor unit, the nearest operating indoor unit may be stopped the operation by the icing up protection as by over cooling.

01-02

Page 8

Outdoor unit: AJ*072/090LELAH: 20A / AJ*108LELAH: 25A

Indoor unit:

20A

Leakage current: 100 mA 0.1sec or less

Install a breaker (Included with Earth Leakage Circuit Breaker) in accordance

with the related laws and regulations.

Outdoor unit:

2.5mm2 2 wires + Ground

Outdoor unit side: 400V 3 50Hz

Indoor unit side:

Use crimp-type terminals with insulating sleeves for stranded conductor cable

Power source

Shall be no scratches, deformation, etc. (Be careful of deformation of the front panel)

Shall be checked and entered in the check sheet.

Connection points check & loose terminal block screws check

0.33mm

, shielded wire used (22AWG)

Connection points check & loose terminal panel screws check

Check whether or not the heat insulation material is installed w

ithout a gap.

DIP SW : SET1 (1 ~4), Factory setting SET2, SET3,SET5-1,2,3: ALL OFF

T Refer to the Installation manual 7.2.2

erminal resistor setting SET5 - 4 OFF: Disable, ON: Enable

Refrigerant circuit address setting (SET : REF AD x10 and REF AD x1)

Comparison of calculated value and value written on electrics box. Entered in check sheet.

Refer to the installation manual 8.3.2

Gas pipe: fully open

Liquid pipe: fully open

There shall be no scratches, deformation, tilting, etc.

Shall be checked and entered in the check sheet.

Shall be installed positively.

Connection points check & loose terminal panel screws check

0.33mm

, shielded wire used (22AWG)

Connection points check & loose terminal panel screws check

Check whether or not the heat insulation material is installed without a gap.

Refrigerant circuit address (REF AD)

Indoor unit add

ress (IU AD)

At automatic address setting, IU AD/REF AD shall be [0].

Remote controller address (RC AD)

Function setting (Remote controller custom code/ external input switching/

auxiliary heater ON-OFF)

Indoor

unit

Outdoor

unit

Judgement standard

Check

Check contentsProcedure

1-2 TEST RUN METHOD

1-2-1 Check Items Before Power ON

01-03

[Note] If operated with the 3-way valve closed, the oil discharged from the compressor will not be returned and will lead to trouble.

Circuit breaker capacity

Type of power source wiring

Supply power source

Appearance

Serial No.

Drain cap installation

Power source wiring connection

Type of communication line

Communication line connection

Type of remote contr

oller wiring

Remote controller wiring connection

Connection piping

Rotary SW setting

DIP-SW setting

Appearance

Serial No.

Outside air temperature

Power source wiring connection

Type of communication line

Communication line connection

Connection piping

DIP-SW setting

Rotary SW setting

Additional refrigerant amount

3-way valve

Wiring on terminal blocks

Power cable: 6.0mm / Earth cable: 6.0mm Limited wiring length : 62 m

Indoor unit:

2 wire type : 16 to 22AWG (0.33 to 1.25mm ) 3 wire type : 22AWG (0.33mm )

2 2

230V 1 50Hz

Page 9

Addresses shall be assigned to all indoor units / Signal amps. Check for unset or duplicated addresses. < For the setting, Refer to the page 01-06, 07 >

All the indoor units in the same refrigerant

circuit

shall enter the cooling test run

state.

The outdoor units corresponding to the operation capacity of the indoor

units shall operate. < Test operation procedure, Refer to the page 01-09,10 >

Cooling test run

All of the indoor units operation

(after 30 mins)

Automatic address setting

Address read

Outdoor unit circuit breaker ON

Indoor unit circuit breaker ON

Check lighting of Main PCB LED101 and 7-segment display.

Check whether or not indoor unit OPERATION and TIMER lamps flash alternately.

Address setting/ check

There shall be no Error information on the 7-segment display on the Main PCB.

3 Phase: 342 to 456V

These shall be no abnormal sound or abnormal vibration.

The outdoor fan shall not make a moaning sound. There shall be no discharge air leaking from the outdoor duct.

There shall be no pipe chattering sound or flute sound generated.

HPS: 2.7 ~ 3.0 MPa

LPS: 0.9 ~ 1.0 MPa

TH1: 81°C

TH4: 15°C

TH21: 27°C

TH22: 11°C

TH24: 13°C

Shall operate corresponding to the operation capacity of the indoor units.

Service tool used, output (CSV Excel)

Outdoor unit push button SW operation

High pressure

Low pressure

Discharge pipe temperature (outdoor unit)

Suction pipe temperature (outdoor unit)

Inlet air temperature (indoor unit)

Heat exchange inlet temperature (indoor unit)

Heat exchange outlet temperature (indoor unit)

Compressor operation

Data output

1-2-2 Check Items After Power ON

Function setting

Are the necessary functions set ? < For the setting, Refer to the page 01-16

〜19 >

Outdoor unit Main PCB push button SW setting/check

[Note]

Cooling test run for each refrigerant circuit. If multiple refrigerant circuits are test run at the same time, refrigerant circuit address setting errors cannot be detected.

Judgement standard

Check

Check contentsProcedure

Power ON

Inlet air temperature and outlet air temperature difference shall be 10°C or greater.

There shall be no abnormal sound or abnormal vibration.

There shall be no water leakage. There shall be no condensation on the drain, cabinet, piping, and discharge port.

Shall operate according to the settings. (ON-OFF, set temperature change)

Outlet air temperature

Abnormal sound/abnormal vibration

Water leakage check

Remote controller operation

Outdoor Main PCB 7-seg. display

Operation voltage

Abnormal sound/ abnormal vibration

[Note] Turn on all indoor units power in the same refrigerant circuit address.

Indoor unit connection check

Are the number of connecting indoor units correct ? Is the total capacity of indoor units correct ? < For the checking, Refer to the page 01-08 >

Indoor unit

connection check

Address record

Address hold check

All the indoor units and outdoor units of the same refrigerant circuit can be checked on the service tool.

Enter the set addresses in the check sheet.

Check whether or not the address setting is held by the service tool after indoor/outdoor circuit breakers were turned OFF to ON.

[Note] Before connecting service tool, the address setting has to be completed.

01-04

When the system operates with the indoor units remaining no power, it is cause of malfunction.

Page 10

Fan operation

Louver operation (except duct)

Outlet air temperature

Abnormal sound/abnormal vibration

Water leakage check

Remote controller operation

Indoor unit individual operation

Shall be switched to all fan speeds in the cooling mode.

Louver shall be switched to all positions. Shall also swing.

Inlet air temperature and outlet air temperature difference shall be 10°C or greater.

There shall be no abnormal sound or abnormal vibration.

There shall be no water leakage. There shall be no condensation on the drain, cabinet, piping, and discharge port.

Shall operate according to the settings. (ON-OFF, set temperature change)

Judgement standard

Check

Check contentsProcedure

These are representative figures of AJ*108LELAH at the standard condition. ( Indoor : 27

°C,

Outdoor : 35°C ) If conditions are different from those above mentioned, the figures will be changed slightly. It depends on following conditions.

Outdoor unit capacity Indoor and outdoor temperature Indoor unit capacity Pipe length etc

1. Error occured

- Check on the Error code on the Remote controller or Indoor unit or Outdoor unit or Service tool and check the description of the Error code.

< Refer to the Trouble shooting in the Service manual.> < Refer to the Execution of precautions 1-1 and Check item Before power ON 1-2-1>

2. No good performance without error code

- Check if the protection controlling is operating or not Evaporator Icing up protection, High discharge temperature protection,etc.

< Refer to the part of protection controlling in the Service manual >

- Check on the refrigerant circuit Refrigerant amount, Pipe blockage, Wrong position of separation pipes etc.

< Refer to the Execution of precautions 1-1 and Check item Before power ON 1-2-1> < Refer to the regulation of installation in the Installation manual>

Trouble shooting on Test run operation

01-05

Page 11

1-2-3 Automatic address setting for signal amplifiers

When using signal amplifiers

When setting the address of the signal amplifier, please use the factory setting.

(See the installation manual of the signal amplifier)

When the system is normal, nothing will be displayed on the 7 segment display.

When ERROR is displayed, inspect the units.

Use the “MODE/EXIT”, “SELECT”, and “ENTER” buttons on the outdoor unit Main PCB to configure settings according to the procedures below.

1: FUNCTION Setting

First 2 digits Last 2 digits

(the display when the main power is turned on)

(When [F4] to [F9] are displayed, continue to press the "SELECT" button until [ F3 ] is displayed)

MODE/EXIT

SELECT

ENTER

SELECT

ENTER

Automatic address setting for signal amplifiers

Press the “SELECT” button until "10" is displayed

Press the “ENTER” button for more than 3 seconds

* Setting is complete when the number of unit is displayed

End

ENTER

MODE/EXIT

SWITCH POSITION

SW107 SW108 SW109

MODE

/EXIT

SELECT ENTER

LED101

(GREEN)

POWER

MODE

LED105 LED104

LED102

(RED)

ERROR

Push button switch

7 Segment LED Lamp

Outdoor unit printed circuit board

01-06

Page 12

SWITCH POSITION

SW107 SW108 SW109

MODE

/EXIT

SELECT ENTER

LED101

(GREEN)

POWER

MODE

LED105 LED104

LED102

(RED)

ERROR

Push button switch

7 Segment LED Lamp

Outdoor unit printed circuit board

Check that the rotary switch IU AD on the indoor unit Main PCB is set to “00”. If it is not set to “00”, it means the address of that device is not set.

(Factory default is “00”).

Turn on the power of the indoor and outdoor units.

When the system is normal, nothing will be displayed on the 7 segment display.

When ERROR is displayed, inspect the units.

Use the “MODE/EXIT”, “SELECT”, and “ENTER” buttons on the outdoor unit Main PCB to configure settings according to the procedures below.

1: FUNCTION Setting

First 2 digits Last 2 digits

(the display when the main power is turned on)

(When [F4] to [F9] are displayed, continue to press the “SELECT” button until [F3] is displayed.)

SELECT

ENTER

1-2-4 Automatic address setting for Indoor units

It may take about 10 minutes for completing the processing.

End

First 2 digits Last 2 digits

Press the “SELECT” button until “11” is displayed.

Press the “ENTER” button for more than 3 seconds.

Automatic address setting for indoor units

The number of indoor units with normal settings will be displayed at the first 2 digits of the 7 segment display. The number of indoor units with error will be displayed at the last 2 digits.

NOTE) After the “ENTER” button is pressed, the end processing will occur for about 30 seconds.

During this period, the 7 segment will blink.

ENTER

SELECT

ENTER

Error

Found

01-07

Page 13

SWITCH POSITION

SW107 SW108 SW109

MODE

/EXIT

SELECT ENTER

LED101

(GREEN)

POWER

MODE

LED105 LED104

LED102

(RED)

ERROR

Push button switch

7 Segment LED Lamp

Outdoor unit printed circuit board

1-2-5 Indoor unit connection check

Please perform the indoor unit connection check according to following procedures.

MODE/EXIT

SELECT

ENTER

LED105

LED104

ENTER

Set to Function mode [F3].

(When [F4] to [F9] are displayed, continue to press the “SELECT” button until [F3] is displayed.)

Press the “SELECT” button until “12” is displayed.

When indoor unit connection check can not be performed

Turn on the powerof indoor unit and outdoor unit.

•

Press the

“ENTER” button for

more than 3 seconds.

•

This will be displayed when the Indoor unit connection check starts.

•

MODE/EXIT

SELECT

ENTER

(*1)

(*2)

(*1) The number of connected indoor units

(*2) Volume ratio of the indoor units connection

Ex.) When 8 units are connected

Ex.) When the ratio is 120%

Please refer to the following “Error code” for details

[ Note ] Error code

22.1: Connecting Indoor units capacity error

24.2: Connecting number of indoor unit error

26.1: Dual address number is existing

Other Error code: Refer to the Trouble shooting

When it finishes normally, nothing will be displayed on 7 segment display.

When error occurs

Confirm the number of connected indoor units and the volume ratio of the indoor units connection.

•

Exit indoor unit connection check mode.

•

01-08

Page 14

1-2-6 Test Run From Outdoor Main PCB

All the indoor units connected to the outdoor unit can be test-operated by push button setting.

LED105 LED104LED105 LED104 LED105 LED104LED105 LED104

LED105 LED104

[ Cooling test run ]

[ Heating test run ]

[ Test run stop ]

LED105 LED104

Press the ENTER button for at least 3 seconds.

Press the "ENTER" button or Time out ( 5 seconds)

TIXE / EDOM

< Pursuance completion >

< Monitoring condition >

< Mode select condition >

< Return to mode select condition >

< Function select condition >

[ Function mode ]

SWITCH POSITION

SW107 SW108 SW109

MODE

/EXIT

SELECT ENTER

LED101

(GREEN)

POWER

MODE

LED105 LED104

LED102

(RED)

ERROR

Push button switch

7 Segment LED Lamp

Outdoor unit printed circuit board

TEST RUN SETTING

[ Monitoring mode ] [ Setting mode ]

[ Error history mode ]

For a detailed description of push button operation, refer to the [D&T manual Chapter 6. SYSTEM DESIGN]

LED105 LED104

< Return to monitoring condition >

example, Normal indicate : [ Cooling mode ]

[ Central control setting

Forced reset ]

There are the following 2 methods of resetting test operation.

(1) Automatic reset when 60 minutes has elapsed.

(2) Reset when operation stop was performed.

Note

SELECT

ENTER

TIXE / EDOM

01-09

Page 15

1-2-7 Test Run From Remote Controller

Press the TEST RUN button on the remote controller, while the air conditioner is running.

To end test run operation, press the remote controller START / STOP button.

When the air conditioner is being test run, the OPERATION and TIMER lamps of indoor unit flash slowly at the same time.

START / STOP button

TEST RUN button

2. Standard wireless remote controller

Stop the indoor unit. Push the button and button simultaneously for more than two seconds. The air conditioner will start to conduct a test run and " " will display on the remote controller display. However, the , setting button does not have function, but all other buttons, displays, and protection functions will operate.

To stop test run, push the START / STOP button of the standard wired remote controller. For the operation method, refer to the operating manual and perform operation check. Check that there are no abnormal sounds or vibration sounds during test run operation.

Perform the test operation for 60 minutes.

1. Standard wired remote controller

UTY - LNH

UTY - RNK

Stop the indoor and outdoor units. Push the remote controller button and button simultaneously for more than three seconds. The air conditioner will start to conduct a test run and " " will display on the temperature display.

SET

However the setting button does not have function but all other buttons, displays and protection functions will operate.

To stop test running press the button of the simple remote controller. For the operation method refer to the operating manual and perform operation check. Check that there are no abnormal sounds or vibration sounds during test run operation.

3. Simple remote controller

UTY - RSK

TIMER MODE

CLOCK ADJUST

TEST RUN

RESET

TIMER

SLEEP

FILTER RESET

SWING

SET

ECONOMY

FANMODE

START

STOP

SET

TEMP.

TIMER MODE DAY

SET BACK

CLOCK ADJUST

DAY OFF

TIMER DELETE TIMER SET

FAN MODE

SET TEMP.

START / STOP

01-10

Page 16

[ Select All (F2) ]: All of R.C.Group (Indoor units) [ Identify Unit (F3) ] : Specific R.C.Group (Indoor unit)

Setup Menu

Indoor unit Special Setting

Test Operation

Central Controller Setting

Indoor unit Special setting

Indoor Unit Set Temp. Range

Filter Sign

R.C. Prohibition

Group

Select All

Identify Unit

Clear Unit

Select All

Details

Off

Operation

Help

Setup Menu

Monitor Group

Monitor - All

UTY-DCG

Coll

25.0

℃

05/31 03:59

Test Operation

05/31 03:59

RCG_05

Test run operating procedure

4. Central remote controller

LED lamp

[ Arrow ] [ MENU ]

[ OK ]

[ CANCEL ]

Function buttons( F1-5 )

< Monitor screen : 9 units display >

< Password verification >

1) Press Button

2) Press the [ Setup Menu (F2) ] button

5) Press the [ Select All (F2) ] button or [ Identify Unit (F3) ] button

6) Press the [ Start (F5) ] button

3) Shift Indoor unit special setting by pressing the [ ] button and [ ] button

4) Shift the Test Operation by pressing the [ ] button and [ ] button

01-11

Page 17

Test run operating procedure

(1)

(2)

( * )

(1)

(2)

( * )

5. Touch panel controller

UTY - DTG

(1) Select the objective you want to test run. Select the objective icon or list at the monitor screen. (Multiple selections is possible) Select all the devices registered as objectives by pressing "Select All" on the monitor screen.

(2) After objective selection at (1), switch to the <Setting screen> by pressing "Operation".

Office B

Conference

Conference B

Meeting 1

Meeting

Parking lot

Meeting

EntranceRestrantRoom

101

Office A

PC Room

Top Up

Down

List

Heat

Auto

Cool

26.0 C

24.0

Auto

22.0

Auto

24.0 C

21.5 C

Heat

21.5 C

Cool

Off

All

21.0

Heat

All

Lange Group

Top Up

Down

List

Office A

PC Room

Room 101

Restrant

Entrance

Meeting 1

Off

Mixed

Heat

Auto

Cool

24.0 C

26.0 C

Low

Auto

21.5 C

High

Office B

Mixed Mixed Mixed

Mixed

Name

Expand

Status Mode

Set Temp

Fan

R/C Prohibit

Status: On

10/11.2008.Mar. 02:20 PM

Monitor Mode

Heat

21.0

Off

Operation

Clear All

Select All

Schedule

Setting

Off

Operation

Clear All

Select All

Setting

Schedule

Group Error

Schedule Filter Sign Op. Controlled Op. Restricted

RC Prohibition All On/Off On

Mode Temp. Timer

Filter

Mode Set Temp.

Group Error

Schedule Filter Sign

Op.Controlled Op.Restricted

01-12

Page 18

(3) Switch to the <Details setting screen> by pressing "Optional Setting" on the setting screen.

(4) Send (start) test run by pressing "Start" and then pressing "OK" on the details setting screen.

During sending, the slave screen shown below is displayed. When sending is completed, the sending slave screen and details settingscreen are closed.

To interrupt test run, select the device being test run and execute an operation stop command.

(*) At the monitor screen, test run is reset by stopping operation of the objective devices by pressing "OFF".

(*) Or test operation is reset by stopping operation of the objective

devices by pressing "Off" of Operation and then pressing "OK" on the setting screen.

(3)

(4)

(5)

( * )

Cancel

Off

Transferring data. Please wait.

Reset

Cancel

Stand by (Defrost) Stand by (Oil Recovery) Test Operation

Start

Air Flow Direction

Economy

Anti Freeze

Filter Sign

Operation

Test

Down

Swing

Left Right

Off

Special State

Status: On

SettingOptional

Cancel

Off

Auto

Cool

Dry

Fan

Heat

Operation Controlled

High

Med

Low

Quiet

Meeting Room

24.0 C

operation

R/C Prohibition

Mode Set Temp. Fan

Optional

Setting

All

On/Off

Filter

Timer

Temp.

Mode

10/11.2008.Mar. 02:20 PM

Air Flow Direction Economy Anti Freeze Filter Sign Test Operation

Control Unit :

Operation Setting

Status: On

01-13

Test run continues for 60 minutes.

Page 19

(1) Press "Menu" on the monitor screen. the < Main Menu screen > is displayed. (2) Press "Next Page" and press "Maintenance" (3) Press "Next Page" and press "Test Run". the <Test run screen > is displayed. (4) Press "OK"

The test run continues for 60 minutes.

To interrupt test run before it is complet, return to the "Monitor Mode Screen",

and press ON/ OFF.

< Monitor Mode Screen >

< Main Menu Screen >

< Maintenance Screen >

UTY - RNR

< Test Run Screen >

01-14

6. 2-Wire type wired remote controller

Page 20

1-3 TEST RUN CONTROL

01-15

1. When the test run signal is transmitted from standard wired, wireless remote controller, simple remote controller, transmitted network, and outdoor unit.

(1) The test run operation starts and the electric expansion valve is controlled to a maximum flow, regardless of the temperature condition. (2) Frost prevention operation has priority over item(1). (3) Whether state of the indoor unit operates or stops, All units in the same refrigerant circuit will start to conduct a test run in accordance with the operation mode set by push switch of outdoor unit ( see 1 - 2 - 3 ). (4) After 60 minutes passes, the test run stops. (5) Test running initialization is shown below.

Fan speed Hi Hi

Room Temperature Indication 18 30

Hi Hi

18 30

Vertical Air Direction Panel

Swing

Operating Mode

Cooling Heating Cooling Heating

OFF OFF

Position

EXCEPT FOR THE DUCT MODEL DUCT TYPE

CEILING TYPE

COMPACT FLOOR

COMPACT CASSETTE TYPE

COMPACT WALL MOUNTED TYPE

*Example

Set the air outlet selection switch to

Page 21

1-4 FIELD SETTING AND MONITOR MODE LIST FOR OUTDOOR UNIT

Push switch on outdoor unit PCB

[ F1 ]

Monitor mode

Setting Mode

ITEM CODE No.

Information contents

Classification

Connected number of indoor unit

The number of the communicating unit is displayed

Device and system

Software version :

Software version of outdoor unit

[ ] [ ] [ ] [ ] [ ] displays by five items

02 Software version of INV PCB

It skips when there is no suffix

Software version of communication PCB

Operation of each part

10 Rotational speed of outdoor unit fan motor

11 Rotational speed of INV compressor

12 Current value of INV compressor

The rotational speed of the outdoor unit fan motor is displayed

[ rpm ]

The rotational speed of the compressor is displayed [ rps ]

Current value of INV compressor is displayed [ A ]

14 Pulse of EEV1

Pulse of EEV1 is displayed [ pls ]

15 Pulse of EEV2

Pulse of EEV2 is displayed [ pls ]

Time guard 20 Accumulated current time

21 INV compressor accumulated time

[ Cooling ]

22 INV compressor accumulated time

[ Heating ]

Accumulated current time is displayed

[ 10 hour ]

Accumulated time is displayed in the cooling operation of the

INV compressor

[ 10 hour ]

Accumulated time is displayed in the heating operation of the

INV compressor

[ 10 hour ]

Refrigerant cycle data 1

Refrigerant cycle data 2

Information on Thermistor 1

(

INV compressor discharge temperature sensor

)

The value of the Thermistor 1 is displayed

The value of the Thermistor 3 is displayed

The value of the Thermistor 4 is displayed

[°C ] or [°F ]

The value of the Thermistor 7 is displayed

The value of the Thermistor 9 is displayed

[°C ] or [°F ]

The value of the pressure sensor 1 is displayed [ MPa ] or [ psi ]

The value of the pressure sensor 2 is displayed [ MPa ] or [ psi ]

Forbidden

50 Information on pressure sensor 1

( High pressure sensor )

51 Information on pressure sensor 2

( Low pressure sensor )

Refrigerant

cycle data 4

Refrigerant cycle data 3

01-16

Information on Thermistor 5

(

Heat-exchanger (outlet) temperature sensor )

Information on Thermistor 7

(

Liquid temperature sensor 2 )

Forbidden

Information on Thermistor 9

( Sub-cool heat-exchanger (outlet) temperature sensor )

Information on Thermistor 10

( INV compressor temperature sensor )

Information on Thermistor 4

( Outdoor temperature sensor )

( Suction temperature sensor )

Information on Thermistor 3

Forbidden

The value of the Thermistor 10 is displayed

[°C ] or [°F ]

The value of the Thermistor 5 is displayed

[°C ] or [°F ]

Page 22

Push switch on outdoor unit PCB

[ F2 ]

Monitor mode

Setting Mode

ITEM CODE No.

Information contents DefaultClassification

10 11

13,14

25,26,27

35,36,37 38,39

00 01 02

00 01

04 00 01 02 03

1010

00 00

02 03

Pipe length setting

Cooling capacity shift

Heating capacity shift

16,17

Forbidden Switching between forced stop or

Operation mode selecting method

22,23,24 Forbidden

Change of unit (Temperature)

Change of unit (Pressure)

Energy saving level setting

40-65m 0-40m 65-90m 90-120m

10 Forbidden

Forbidden Factory default

Factory default

Factory default Factory defaultForbidden

Normal mode

Factory defalt

Save energy mode +2

°C

High power mode 1 -2 °C High power mode 2 -4

°C

Normal mode Save energy mode -2

°C

High power mode 1 +2°C High power mode 2 +4°C

Forced stop

Factory default

Celsius (

°C)

Disable (°F) MPa

psi Level 1 (stop) Level 2 (operated at 40% capacity) Level 3 (operated at 60% capacity) Level 4 (operated at 80% capacity) Level 5 (operated at 100% capacity)

Emergency stop Priority given to the first command Priority given to the external input of outdoor unit Priority given to the master indoor unit

Forbidden

Install

Correction

Change of

emergency stop

00 01 00 01 00

31,34,35

Forbidden

01 02 03 04

function 1

Change of

function 2

01-17

50,51,60, 61,64

Capacity priority setting

Low noise mode setting

Low noise level setting

Forbidden

Factory defalut

Level 1

Off (quiet priority) On (capacity priority) Off (Normal) On (Low noise mode operation is always done)

00 01 00

Low noise

setting 1

3737

Electricity meter No. setting 1

( Set the ones digit and tens digit of the No. of the electricity meter connected to CN135 )*1

Electricity meter No. setting 2

( Set the ones digit and tens digit of the No. of the electricity meter connected to CN135 )*1

Electricity meter pulse setting 1

( Set the ones digit and tens digit of the No. of

Electricity meter pulse setting 2

Setting number x00~x99 ( Refer to Design & Technical Manual for details.)

Setting number 0xx~2xx ( Refer to Design & Technical Manual for details.)

Setting number xx00~xx99 ( Refer to Design & Technical Manual for details.)

Setting number 00xx~99xx ( Refer to Design & Technical Manual for details.)

00~99

00~02

00~99

the electricity meter pulse setting connected

to CN135 )*2

( Set the ones digit and tens digit of the No. of

the electricity meter pulse setting connected

to CN135 )*2

Change of

function 4

Change of

function 3

*1 : When electricity meter No. is set to "000" and "201 to 299", the pulses input to CN135 become ineffective.

Available setting number is "001" to "200"

*2 : When the electricity meter pulse setting is set to "0000", the pulses input to CN135 become ineffective.

Available setting number is "0001" to "9999"

Level 2

Page 23

Push switch on outdoor unit PCB

[ F3 ]

Monitor mode

Setting Mode

ITEM CODE No.

Setting Function

Classification

Meaning of Error History Number

ITEM CODE No.

Information contents

Classification

Cooling test run

Forced thermostat-ON in Cooling.

Heating test run

Forced thermostat-ON in Heating.

03,04

Test run stop

Forbidden

Test run is stopped.

Signal amplifier automatic address

Indoor unit automatic address

Indoor unit connection check

Automatic address setting operates for indoor unit of same

The number of indoor units and the total capacity of indoor units

Automatic address setting operates for signal amplifier.

refrigerant circuit.

of same refrigerant circuit.

Vacuuming mode

Vacuuming mode operates Refer to page 01-01 for the function.

Error history clear

Forbidden

All the abnormal code histories are cleared.

Current time clear

Accumulated current time becomes [ 0 ]

INV compressor accumulated time clear

Accumulated time of the INV compressor becomes [ 0 ]

Field setting all clear

Return to default the all set items.

Clear memorized information of “F3 - 12” ( Indoor unit connection check )

The information of the number of indoor units and the total

Abnormal reset

It was displayed when abnormality occurs, and the total

Maximum memorized indoor unit number reset

Maximum memorized indoor unit number is reset

Forced Central control function release

When the centralized control device failure, and the centralized control setting cannot be released, this function is used.

All the limitations set with the centralized control device are released.

“E14.5 : Indoor unit number shortage ” error is cleared.

code is reset.

This is a function that uses to clear abnormal display after the repair is completed.

Please operate the switch after power off or power on the outdoor unit.

capacity of indoor units are cleared.

Forced

Push switch on outdoor unit PCB

[ F9 ]

Monitor mode

1 time ago (Newest)

2 time ago

3 time ago

4 time ago

5 time ago

6 time ago

7 time ago

8 time ago

9 time ago

10 time ago

When the error occurred, the error code is memorized up to 10 on Main PCB.

If the memorized error code becomes over 10, the oldest one will be erased.

Error history

operation

Install and maintenance 1

Install and maintenance 2

Refer to Chapter 4.TROUBLE SHOOTING

4-3-2 Error Code List for Outdoor unit

Compressor Motor Loss of Synchronization Compressor 1 Temperature Abnormal Inverter Compressor Start Up Error Discharge Temperature 1 Abnormal Low Pressure Abnormal Current Sensor 1 Error Trip Detection Rush Current Limiting Resistor Temp Rise Protection Outdoor Unit FAN motor 1 Lock Error Outdoor Unit FAN motor 2 Lock Error

< Reset Error Item List By Abnormal Reset Setting >

Reset

Specialty function

Clear

01-18

Forbidden

Page 24

Function

number

Setting number Default Details

Filter

indicator

interval

00 Standard

Adjust the ﬁlter cleaning interval notiﬁcation. If the notiﬁcation is too early, change to setting 01. If the notiﬁcation is too late, change to setting 02.

01 Longer 02 Shorter

Filter

indicator

action

00 Enable

Enable or disable the ﬁlter indicator. Setting 02 is for use with a central remote control.

01 Disable

Display only on

central remote

control

Ceiling

airﬂ ow

00 Standard

Regulate the airﬂ ow according to the needs of the installation location. When set to 01, the air ﬂow will be stronger. (Cassette type only)

01 High Ceiling

Vertical

airﬂ ow

direction

00 Standard

Adjust the ver tical air ﬂow direction. All air ﬂow direction louvers are adjusted together.

(Cassette type only)

01 Raise

Horizontal

swing

airﬂ ow

direction

00 Standard

Adjust the horizontal swing airﬂow direction.

(For horizontal swing equipped models)

01 Left half

02 Right half

Static pressure 26

00 SP mode 00

Indoor unit address 00

Ref. circuit address 00

00~63

00~99

Model name

Range of static

pressure

Normal static

pressure

ARXK07GCLH

SP mode 00 to 03 10 PaARXK09GCLH ARXK12GCLH ARXK14GCLH

SP mode 00 to 05 15 PaARXK18GCLH ARXK24GCLH ARXD04GALH

SP mode 00 to 09

(0 to 90 Pa)

25Pa

ARXD07GALH ARXD09GALH ARXD12GALH ARXD14GALH ARXD18GALH

ARXD24GALH

SP mode 00 to 05

(0 to 50 Pa)

ARX A24GBLH

SP mode 00 to 14

40Pa

ARX A30GBLH

50Pa

ARX A36GBLH SP mode 00 to 12 ARX A45GBLH SP mode 00 to 11 60Pa ARXC36GBTH SP mode 02 to 16 100Pa ARXC72GBTH SP mode 04 to 27

150PaARXC90GBTH SP mode 05 to 24 ARXC96GATH SP mode 05 to 29 ARXN18GATH SP mode 05 to 10

50Pa

ARXN24GATH SP mode 05 to 15 ARXN30GATH

SP mode 05 to 25

ARXN34GATH ARXN36GATH

60Pa

ARXN45GATH

Please refer to "Chapter04 7.FAN PERFORMANCE CURVE" for the characteristics of each indoor unit.

01 SP mode 01

02 SP mode 02

03 SP mode 03

04 SP mode 04

05 SP mode 05

06 SP mode 06

07 SP mode 07

08 SP mode 08

09 SP mode 09

10 SP mode 10

11 SP mode 11

12 SP mode 12

13 SP mode 13

14 SP mode 14

15 SP mode 15

16 SP mode 16

17 SP mode 17

18 SP mode 18

19 S

P mode 19

20 SP mode 20

21 SP mode 21

22 SP mode 22

23 SP mode 23

24 SP mode 24

25 SP mode 25

26 SP mode 26

27 SP mode 27

28 SP mode 28

29 SP mode 29

31 Normal SP

Cool air tem-

perature trigger

00 Standard

Adjust the cool air trigger temperature. To lower the trigger

temperature, use setting 01. To raise the trigger temperature,

use setting 02.

01 Adjust (1)

02 Adjust (2)

Heat air tem-

perature trigger

00 Standard

Adjust the heat air trigger temperature. To lower the trigger

temperature by 6 degrees C, use setting 01. To lower the trigger temperature by 4 degrees C, use setting 02. To raise the trigger temperature, use setting 03.

01 Adjust (1) 02 Adjust (2) 03 Adjust (3)

FUNCTION

SETTING

1-5 FIELD SETTING / FUNCTION SETTING FOR INDOOR UNIT

Address

01-19

Page 25

Function

number

Setting number Default Details

*1 Auto

restart

00 Enable

Enable or disable automatic system restart after a power outage.

01 Disable

Cool Air

Prevention

00 Super low

Restrain the cold airﬂow with making the airﬂ ow lower when star ting heating operation. To correspond to the ventilation, set to 01.

Follow the setting

on the remote

controller

External

control

00 Start /Stop

Allow an external controller to start or stop the system, or to perform an emergency stop, or to perform a forced stop.

* If an emergency stop is performed from an external controller, same

refrigerant system will be disabled.

* If forced stop is set,indoor unit stops by the input to the external input

terminals,and Start /Stop by a remote controller is restricted.

01 Emergency stop

02 Forced stop

Error report target

00 All

Change the target for reporting errors. Errors can either be reported in all locations, or only on the wired remote.

Display only on

central remote

control

Fan setting

when cooling

thermostat OFF

Follow the setting

on the remote

controller

When set 00, Indoor unit is continued operation based upon Central remote controller or individual controller set. Once indoor unit received signal from External controller, Indoor unit changed Fan mode forcibly.

When set 01, Indoor unit is continued operation based upon Central remote controller or individual controller set. Once indoor unit received signal from External controller, Indoor unit stop forcibly.

Connection of the wired remote controller (2-wire type or 3-wire type) and switching its

thermistor are necessary.

01 Stop

*1 : Auto restart is an emergency function such as for power failure etc.

Do not start and stop the indoor unit by this function in normal operation. Be sure to operate by the control unit, converter or external input device.

FUNCTION

SETTING

FUNCTION

SETTING

01-20

Page 26

Function

number

Setting number Default Details

Filter

indicator

interval

00 Standard

Adjust the ﬁlter cleaning interval notiﬁ cation. If the notiﬁcation is too early, change to setting 01. If the notiﬁcation is too late, change to setting 02.

01 Longer 02 Shorter

Filter

indicator

action

00 Enable

Enable or disable the ﬁlter indicator. Setting 02 is for use with a central remote control.

01 Disable

Display only on

central remote

control

Static pressure 26

05 SP mode 05

Model name

Range of static

pressure

Normal static

pressure

ARXH054GTAH

SP mode 05 to 19

(50 to 185 Pa)

185Pa

ARXH072GTAH

SP mode 05 to 20

(50 to 200 Pa)

200Pa

ARXH096GTAH

SP mode 05 to 22

(50 to 220 Pa)

200Pa

06 SP mode 06

07 SP mode 07

08 SP mode 08

09 SP mode 09

10 SP mode 10

11 SP mode 11

12 SP mode 12

13 SP mode 13

14 SP mode 14

15 SP mode 15

16 SP mode 16

17 SP mode 17

18 SP mode 18

19 SP mode 19

20 SP mode 20

21 SP mode 21

22 SP mode 22

31 Normal SP

*1 Auto

restart

00 Enable

Enable or disable automatic system restart after a power outage.

01 Disable

Cool Air

Prevention

00 Prohibited

Setting change prohibited.

Follow the setting

on the remote

controller

External

control

00 Start /Stop

Allow an external controller to start or stop the system, or to perform an emergency stop, or to perform a forced stop.

* If an emergency stop is performed from an external controller, same

refrigerant system will be disabled.

* If forced stop is set,indoor unit stops by the input to the external input

terminals,and Start/Stop by a remote controller is restricted.

01 Emergency stop

02 Forced stop

Error report target

00 All

Change the target for reporting errors. Errors can either be reported in all locations, or only on the wired remote.

Display only on

central remote

control

Humidiﬁer

contro

00 mode 00

Select control conditions of external output. "Mode 0 0" is output when heating thermostat is ON, "Mode 01" is output in heating operation, "Mode 02" is output in heating operation and in fan operation.

01 mode 01

02 mode 02

1-6 FIELD SETTING / FUNCTION SETTING FOR OUTDOOR AIR UNIT

01-21

Page 27

2. OUTDOOR UNIT OPERATION CONTROL

Page 28

2-1 INPUT / OUTPUT LIST

2. OUTDOOR UNIT

02-01

Input / output or kind of detail Control range

Discharge pressure sensor <HIGH> Pressure sensor Measure range 0.0 to 5.0MPa Suction pressure sensor <LOW> Pressure sensor Measure range 0.0 to 1.7MPa Discharge temperature sensor <TH1> Themistor <Blue>

Measure range 10 to 130

Heat exchanger temperature sensor <TH5> Themistor < >

Measure range -35 to 70

Sub-cool heat exchanger (outlet) sensor<TH9> Themistor < White>

Measure range -35 to 70

Liquid temperature sensor <TH7> Themistor <Green>

Measure range -35 to 70

Suction temperature sensor <TH4> Themistor <Red>

Measure range -35 to 70

Outdoor temperature sensor <TH3> Themistor < - >

Measure range -25 to 58

Operation current sensor Current sensor

Rotary SW & DIP-SW & Push SW

Electronic expansion valve 1 (Main) EEV coil Operating voltage DC12V Electronic expansion valve 2 (SC-Hex) EEV coil Operating voltage DC12V

4-way valve 4-way valve coil AC220-240V, 50/60Hz 6/5 W Crank case heater

For Inverter Compressor AC240V, 35W

Base heater Field supply

AC220-240V, 35W

LON WORKS Inverter communication

External input 1 (CN131) (

Low noise mode operation) External input 2 (CN132) (Cooling / Heating priority) External input 3 (CN133) (Outdoor unit operation peak control) External input 4 (CN134) (Emergency stop operation)

Dry contact input

Single LED 101 Single LED 102

LED display

Address and function setting

Display the information on operation,

error and

setting with single LED and

7 segment LED.

Control output: DC 0/12-24V, Max.30mA Control output: DC 0/12-24V, Max.

External output 1 (CN136) (Error display) External output 2 (CN137) (Operation display)

ON (Error) / OFF (Normal) ON (Operation) / OFF (Stop)

Communication Input / Output

External Input / Output

I N P U T

U T P U T

Compressor temperature sensor <TH10> Themistor < - > Measure range 10 to 130

Pressure switch

Open 4.2MPa Short 3.2MPa

Fan motor 1 (Upper) DC Brushless motor

7 Segment LED

Compressor

Indoor unit Outdoor unit

Fan motor 2 (Lower) DC Brushless motor

DC Inverter compressor

Brown

Page 29

2-2-1 Operation / Stop Condition

When cooling requirement capacity or heating requirement capacity from either of the indoor units in the same refrigerant circuit is input, the compressor operates. When all the indoor units in no "cooling requirement capacity" or "heating requirement capacity",

the compressor is stopped. But in the following case, the compressor operates in accordance with operation of each mode.

During 3 minute restart prevention operation Icing protection Failure (Refer to chapter 4, TROUBLE SHOOTING ) Under expansion valve initialization At protective operation

Emergency stop Defrost operation

02-02

2-2 COMPRESSOR OPERATION

2-2-2 Capacity Control

(1) Capacity of compressor operation

By the operation of DC inverter rotary compressor, the amount of required refrigerant circulation acceding to cooling and heating load can be supplied from compressor efficiently.

DC inverter rotary compressor is able to control the amount of required refrigerant circulation in details.

Cooling/Heating load

Capacity of

compressor operation

Total capacity

Peak cut stop operation

Inverter Compressor

Page 30

(2) Target low-pressure and high-pressure control

In order to make the evaporation pressure of the indoor unit at the proper pressure on a variety of operations, capacity of the compressor will be controlled by low-pressure sensor of the outdoor unit.

In order to make the condensation pressure of the indoor unit at the proper pressure on a variety of operations, capacity of the compressor will be co

ntrolled by high-pressure sensor of the outdoor unit.

Target low-pressure and high pressure temperature depends on system capacity, capacity of compressor operation, pipe length, and capacity shift switch settings.

02-03

2-2-3 Speed Range of Start, Stop, And Operation

On stop mode : 0 rps

On operating mode : 15 - 120 rps

(1) Heating starting process

*The compressr starting process in cool mode does not have the limitated hold controlling.

For Heating operation only, the upper limit speed at starting is made 40rps and is raised in +10rps increments every 60 seconds.

Speed

Time

40rps

60sec

Target speed

180

sec

60sec

50rps

60rps

70rps

60sec

240

sec

300

sec

360

sec

80rps

10rps

The compressor operates at the upper limit speed if the target speed is higher than the upper limit speed.

The compressor operates at the target speed if the target speed is lower than the upper limit speed.

60sec

10rps

Page 31

Switching conditions of step

2-3 FAN CONTROL

2-3-1 Cooling Operation

Fan step

680 680 660 660 590 510 520

400 440

330 380 300 300 300 450

300

0 0 0

Fan speed (rpm)

02-04

(Conditions which lower the fan speed) High-pressure saturation low limit of target high-pressure

saturation range and heat sink temperature

(Conditions which raise the fan speed) High-pressure saturation upper limit of target high-pressure saturation or heat sink temperature

Fan step

Outside air temperature sensor detected value

TAOUT 30°C

30°C TAOUT 20°C

20°C TAOUT 10°C

10°C TAOUT

The initial speed of the outdoor unit is detected by out door temperature sensor.

30 37.4

40.4

46.6

High-pressure saturation temperature

Outdoor temperature

Upper limit of target high-pressure saturation temp.

Low limit of target high-pressure saturation temp.

Target high-pressure saturation temp.

Thereafter, the high-pressure is monitoring at a set time interval and the fan speed is changed by the following conditions.

The fan is controlled to keep high puressure saturation temperature within the target range as follows

780 740 660 660 590 510 520

400 440

330 380 300 300 300 450

300

0 0 0

790 710 700 620 590 510 520

400 440

330 380 300 300 300 450

Intermittent 1

0 0 0

Step

Upper FAN Lower FAN

AJ*072LELAH

AJ*090LELAH AJ*108LELAH

960 880 870

790

Intermittent 2

300

Intermittent 1

Intermittent 2

Intermittent 1

Intermittent 2

Intermittent 1 : 14 sec. ON (300rpm), 17 sec. OFF

Intermittent 2 : 19 sec. ON (300rpm), 17 sec. OFF

47.8

55°C: 8&10HP 60°C: 12HP

60°C: 8&10HP 65°C: 12HP

Page 32

02-05

2-3-2 Heating Operation

Switching conditions of step

Fan step

8HP&10HP: 11 / 12HP: 13

Outside air temperature sensor detected value

TAOUT 0°C

0°C TAOUT 5°C

5°C TAOUT

Thereafter, the high-pressure is monitoring at a set time interval and the fan speed is changed by the following conditions.

(Condition which lowers the fan speed)

Low-pressure 0.85MPa and heat sink temperature

(Condition which raises the fan speed)

Low-pressure saturation 0.74MPa or heat sink temperature

The initial speed of the first boot outdoor unit is detected by outdoor air temperature sensor value (TAOUT).

Fan step

680 680 660 660 590 510 520

400 440

330 380 300 300 300 450

300

0 0 0

Fan speed (rpm)

780 740 660 660 590 510 520

400 440

330 380 300 300 300 450

300

0 0 0

790 710 700 620 590 510 520

400 440

330 380 300 300 300 450

Intermittent 1

0 0 0

Step

Upper FAN Lower FAN

AJ*072LELAH

AJ*090LELAH AJ*108LELAH

960 880 870

790

Intermittent 2

300

Intermittent 1

Intermittent 2

Intermittent 1

Intermittent 2

Intermittent 1 : 14 sec. ON (300rpm), 17 sec. OFF

Intermittent 2 : 19 sec. ON (300rpm), 17 sec. OFF

55° C: 8&10HP 60° C: 12HP

60° C: 8&10HP 65° C: 12HP

Page 33

02-06

Capacity priority s etting

Operation mode

Low noise level se tting

OFF

520

COOL

HEAT

Low noise mode and operation contents

( PUSH SW ) ( PUSH SW )

Normal operation

Low capacity

Not switched for 30 minutes after being once switched.

* Automatic switching

Settings and corresponding operations

LOW NOISE MODE

* Automatic switching

* Low capacity Compressor capacity is low or High-pressure is high (high-pressure saturation 58°C) at cooling or Low-pressure is low (low-pressure saturation 0°C) at heating

Operation in low noise mode

When the low noise mode setting ON from PUSH SW or EXTERNAL INPUT, the outdoor unit operates in

the low noise mode as follows.

LOW NOISE MODE

The operating sound lowers from about 3 to 5 dB more than the rated value

Capacity does not become low even when switched to low noise mode

The operating noise is reduced by limiting the rotational speed of the compressor and fan motor

2-3-3

Low noise mode

400

590

510

700

620

520

400

590

510

700

620

Max FAN Step

Max Compressor Speed

Upper FAN Lower FAN

L Level 1

ow Noise Mode

AJ*072LELAH

AJ*090LELAH AJ*108LELAH

440

COOL

HEAT

330

520

400

520

400

440

330

520

400

520

400

Max FAN Step

Max Compressor Speed

Upper FAN Lower FAN

L Level 2

ow Noise Mode

Page 34

To accurately detect the outside air temperature, the fan is operated while the outdoor unit is stopped.

2-3-4 Other Control

02-07

EEV 1

EEV 2

EEV is controlled so that the system reaches closer to the target discharge temperature that is calculated from high and low pressure.

< Cooling mode >

< Heating mode >

3000

pulses basically.

Initialization conditions

Control range

operation stop

3000 Plulses

55 - 500 pulses 0 pulses

40 pulses

2-4 EXPANSION VALVE CONTROL

Cooling

Heating

Operation mode

160 - 3000 pulses

Cooling

Heating

When power turned on When operation stopped

Page 35

2-5 SPECIAL OPERATION

2-5-1 Oil Recovery Operation

Purpose of the operation

The amount of refrigerant lubricant oil which has been transported to the indoor units and the connection pipe with the refrigerant will become large as the operation time of compressor increases. It is necessary to recover the oil back into the outdoor unit for a certain time interval in order to prevent compressors from dama

ging due to lack of lubrication oil.

During the oil recovery operation, appears on the display of wired and central remote controller, and appears on the simple remote controller. The operation indicators (LED) of the indoor units flash slowly.

Others

02-08

< Start condition >

Compressor accumulated operation time since last cooling oil recovery operation exceeds 3 hours (first time : 1hour)

< End condition >

30 seconds have elapsed since the start and "suction temperature - low pressure saturation temperature 5deg" or 6 minutes

have elapsed since the start.

< Operation >

COMPRESSOR: The rotation speed varies depending on the operation state. EEV Opening (Indoor/Outdoor unit): Controlled pulse (as normal operation mode). FAN speed (Indoor/Outdoor unit) : Controlled fan speed (as normal operation mode).

3. Oil Recovery in Heating operation

1. Oil Recovery in Cooling operation

< Start condition >

Compressor accumulated operation time since the last heating oil recovery exceeds 8 hours (first time : 1hour)

< End condition > After 4 minutes have elapsed

< Operation >

COMPRESSOR: The rotation speed varies depending on the operation state. EEV Opening (Indoor/Outdoor unit) : Controlled pulse (as no

rmal operation mode)

FAN speed (Indoor/Outdoor unit) : Controlled fan speed (as normal operation mode)

< Start condition >

LP < 0.13Mpa

< End condition >

HP- LP 0.7Mpa and LP 0.18Mpa or LP 0.52Mpa or 15 minutes have elapsed since the start.

< Operation >

ation mode).

2. Oil Recovery in Cooling start-up operation

Page 36

02-09

2-5-3 Defrost Operation Control

Accumulated heating operation time is 40 minutes or longer [Accumulated heating operation time is reset at the end of cooling operation or defrosting operation.] and an outdoor unit satisfies condition or below

Condition : "Heat exchange temperature -2°C" accumulated operating time is 180 minutes or longer

Condition : After the following all condition satisfied, "heat exchange temperature defrosting start judgment temperature and during heat exchange liquid temperature drop" accumulated time:10minutes

(a) accumulated heating operation time 30 minutes (b) 10 minutes have elapsed after outdoor unit starting (c) 5 minutes have elapsed since oil recovery

* Defrosting start and end judgment temperature are determined by the outdoor temperature.

Defrosting start judgment temperature = 0.8 x outdoor temperature - 11.6 (However, -27.6°C to - 6°C)

At all outdoor units, heat exchange liquid temperature end judgment temperature or when 15 minutes have elapsed from the start

Defrosting end judgment temperature = 0.39 x outdoor temperature + 12.7 (However, 5 to 12°C range)

If the calculated result is lower than -27.6 , the judgment temperature is defined as -27.6 If the calculated result is higher than -6 , the judgment temperature is defined as -6

2-5-2 Pre-heat Operation

This pre-heat operation protects the start up failure by preventing the refrigerant from soaking into the oil in compressor.

Crankcase heater ON: 30 minutes elapsed since installed compressors stopped

(However, ON when power turned on)

*It doesn't control according to the temperature.

If the calculated result is lower than 5 , the judgment temperature is defined as 5 If the calculated result is higher than 12 , the judgment temperature is defined as 12

OFF: Compressor starts

Outdoor temperature <2 and Compressor stop count exceed 20 times at less than 10 minutes of accumulated heating operation time

Defrost Operation Start Condition 1

Defrost Operation Start Condition 2

Defrost Operation End Condition

Page 37

2-6 PROTECTIVE FUNCTION

02-10

2-6-1 Protective Function List

Protective Function

Detect Parts

Operating Condition

Operation

Discharge Temp Protection 1

Discharge Temp Thermistor

Discharge Temp Protection 2

Discharge Temp Thermistor

High Pressure Protection 4

High Pressure Sensor

COOL HEAT

<Starting conditions> 3 minutes have elapsed since the start of operation and (discharge temperature 105°C or suction SH 10°C accumulated time 30 minutes)

<Reset conditions> Discharge temperature 100°C and suctionSH 7°C

EEV of operating indoor unit gradually opened

<Starting conditions> Cooling: Discharge temperature 100°C

<Reset conditions> Discharge temperature 95°C

EEV2 + 30pls/30 secs

Discharge Temp Protection 4

Discharge Temp Thermistor

< starting condition> Discharge temperature 110°C

Discharge temperature 1 05°C

Compressor speed -6rps every 30 secs Speed rise prohibited, when discharge temperature becomes lower than 105 , prohibit the rotational speed rise of the compressor.

Discharge Temp Protection 5

Discharge Temp Thermistor

<Starting conditions> Discharge temperature 95°C and EEV1=3000 pls

<Reset conditions> 2 minutes have elapsed and (discharge temperature 90°C or EEV1 400pls)

Expansion valve of stopped indoor unit gradually opened (upper limit 200pls)

Discharge Temp Protection Stop

Discharge Temp Thermistor

<Pattern starting condition> Discharge temperature fixed value (120°C)

<Pattern reset condition> 3 minutes have elapsed and discharge temperature 85°C

Compressor stopped

<Pattern starting condition> Pattern generated 2 times within 40 minutes

<Pattern reset condition> Error reset (push button SW) executed after power turned on again

Compressor stopped (permanent stop) Error disp

lay

High Pressure Protection 3

High Pressure Sensor

<Starting conditions> Fixed time has elapsed and high-pressure 3.50MPa (* Fixed time at start of operation: 10 secs, after operation execution: 20 secs)

<Reset conditions> Operation (fan speed 1 step increase) complete

Fan speed 1 step increase

High-pressure 3.50MPa High-pressure 3.50MPa

Fan lowest speed Upper 300 rpm Lower 0 rpm

DISPLAY

EA11

High-pressure 3.20MPa

Compressor capacity lowered/every 15 secs

HP 3.68 MPa

After 25 seconds have elapsed and,

HP 3.60 MPa

Compressor capacity rise prohibited

High-pressure 3.20MPa

HP 3.8 MPa After 25 seconds have elapsed and ,

HP 3.68 MPa

Compressor capacity lowered every 30 secs

Compressor temperature 1 10°C

and

High Pressure Protection 5

High Pressure Sensor

Abnormal High Pressure protection Control

Page 38

02-11

Protective Function

Detect Parts

Operating Condition

Operation

Low Pressure Protection 1

Low Pressure Sensor

COOL HEAT

High Pressure Protection Stop 1

High Pressure Sensor

<Pattern starting condition> High-pressure 4.00MPa

<Pattern reset condition> 5 minutes have elapsed and high-pressure 3.50MPa

Compressor stopped

<Pattern starting condition> Pattern generated 3 times within 60 minutes.

<Pattern reset condition> 10 minutes have elapsed and high-pressure 3.50MPa

Pressure Switch

<Pattern starting condition> Pressure SW operated (Operated by high-pressure 4.20MPa)

<Pattern reset condition> 5 minutes have elapsed and pressure SW operation reset (Reset by high-pressure 3.2MPa)

Compressor stopped

High Pressure Protection Stop 2

<Pattern starting condition> Pattern generated 3 times within 60 minutes.

<Pattern reset condition> 10 minutes have elapsed and pres

sure SW operation reset

(Reset by high-pressure 3.2MPa)

Compressor stopped Error display

<Starting conditions> 3 minutes have elapsed and low-pressure 0.18MPa

<Reset conditions> 3 minutes have elapsed and low-pressure 0.22MPa

EEV of stopped indoor unit opened quickly (450pls)

Abnormal Low Pressure Protection Control

Low Pressure Sensor

Low-pressure 0.16MPa

Compressor capacity lowered every 180 secs,

Low Pressure Protection Stop

Low Pressure Sensor

<Pattern starting condition> Low-pressure 0.05MPa or low-pressure 0.10MPa continues for 10 mins

<Pattern reset condition> 3 minutes have elapsed and low-pressure 0.17MPa

<Pattern starting condition> Pattern generated 5 times within 180 minutes.

<Pattern reset condition> Error reset (push button SW) executed after power turned on again.

Compressor stopped (permanent stop) Error display

3 minutes have elapsed and low-pressure 0.18MPa

Compressor stopped

DISPLAY

Compressor Temp Protection Stop

Compressor Temp Thermistor

<Pattern starting condition> Compressor temperature fixed value (130°C)

<Pattern reset condition> 3 minutes have elapsed and discharge temperature 90°C

Compressor stopped

Compressor stopped (permanent stop) Error display

<Pattern starting condition> Pattern generated 2 times within 40 minutes

<Pattern reset condition> Error reset (push button SW) executed after power turned on a

gain

EA41

EA31

EA42

EA51

when the Low-pressure becomes more than

0.17MPa, prohibit compressor capacity rise

Compressor stopped

Compressor Temp Protection

Compressor Temp Thermistor

Compressor temperature fixed value (115°C)

Compressor stopped

Compressor temperature < fixed value (110°C)

Discharge temperature < fixed value (105°C)

and

Page 39

02-12

Protective Function

Detect Parts

Operating Condition

Operation

Overcurrent Break Stop (Compressor)

Overcurrent Protection Circuit

COOL HEAT

Compressor stopped

Heatsink Temp Thermistor

Heat sink temperature 95°C

<Pattern reset condition> 3 minutes have elapsed and heat sink temperature

Compressor stopped

Heatsink Temp Protection Stop

<Pattern starting condition> Pattern generated 3 times within 60 minutes.

<Pattern reset condition> 10 minutes have elapsed and heat sink temperature

Compressor stopped Error display

<Patte

rn star

ting condition>

Current value Cooling: 14.8A (8,10HP) / 17.7A (12HP)

Heating: 23.5A

<Pattern reset condition> Current value Cooling: 22.5A / Heating: 23.5A

Frequency Maximum Setting Protection (Compressor)

<Pattern starting condition> Current value Cooling:

<Pattern reset condition> Current value Cooling: 23.0A / Heating: 24.0A

Current Detector Circuit

Compressor is stopped when the over currernt protectioncircuit in the inverter PCBoad detects an abnormal current duringthe operation. If it repeated 5 times, the compressor becomes permanentstop.

Compressor is stopped when the over current protection circuit in the inverter PC Board detects an abnormal current at the time of start up. Compressor becomes permanent stop if it re

peated over the number

of set time.

<Reset condition> Error reset (push button SW) executed after power turned on again.

Compressor speed lowered

Compressor speed rise prohibited

• Pattern and start current value changed by outside temperature

DISPLAY

E941

E931

(permanent stop)

EAC4

Protective function

Detect device

Operation

Cool

Heat

Display

Outdoor Unit Reverse phase, Missing phase Wire Error

Main PCB Reverse phase prevention circuit

E615

Operating condition

1 Reverse phase prevention circuit detected reversed phase input or input was not normal at the time of power ON.

2 Reverse phase prevention circuit detected open-phase after power ON.

Reverse phase prevention circuit detects normal condition

System Stop Error indication

Starting condition>

Reset condition>

74°C

15.8A (8,10HP) / 18.7A (12HP)

Page 40

3. INDOOR UNIT OPERATION

Page 41

3-1 FAN CONTROL

03-01

3-1-1 Fan Speed Setting

3. INDOOR UNIT OPERATION

AUTO

HIGH MED LOW

Press the FAN CONTROL button to set the fan speed.

Fan speed setting

3-1-2 "AUTO" Position

Fan speed zone

Hi zone

Med zone

Low zone

When the room temperature decreases

When the room temperature increases

3. DRY OPERATION

1. COOLING OPERATION

2. HEAT OPERATION

• Expansion

• valve

• Indoor fan motor

ON OFF

OPEN CLOSE

ON ON ON

30s

3min

2min30s

The indoor fan always rotates at "Lo" speed.

TIME -->

TR-TS

(1) When the TS is changed. (2) When the operation mode is changed from other mode to "COOL". (3) When the fan control is changed from other position to "AUTO".

The fan speed is determined automatically in accordance with the condition "(TR(corrected room temperature) - TS (corrected set temperature)" as shown on the right. However, the fan speed zone is determined in the manner as the room temperature increases for the following cases.

Same as Cooling operation, fan speed is decided by the difference between the room temperature and the set temperature.

(1) The indoor fan starts operation 5 seconds after the electric expansion valve opens. However, when the indoor unit just starts its operation or the operation mode is changed from other to "DRY" and the refrigerant circulation is not stopped, the fan will rotate immediately without a delay time of 5 seconds. (2) The indoor fan will stop in 30 seconds when the refrigerant circulation stops. (3) The indoor fan will stop immediately when the indoor unit is stopped by pushing the stop button or by a setting of ON timer. (4) When the refrigerant circulation is stopped due to a lower room temperature for more then 3 minutes, the fan will rotate 2 minutes at intervals of 3 minutes. (5) When the indoor unit just starts its operation or the operation mode is changed from other to "DRY" and the refrigerant circulation is stopped, the fan will rotate for 1 minute and then it will operate according to the statement (4).

2min

Fan speed zone

Low zone

Med zone

Hi zone

When the room temperature decreases

When the room temperature increases

-2

TR-TS

-2

-3

TR-TS

-3

TR-TS

-2

TR-TS

-1

-2

TR-TS

-1

TR-TS

Page 42

3-2 MASTER CONTROL

03-02

3-2-1 Operation Mode Control

(2) Cool, Dry and Heat Mode

Indoor fan motor

Operates according to

the AIR FLOW-MODE

setting.

See the fan control

page.

Cool Dry

Drain pump

Turns ON-OFF by the drain pump control function

Electrical expansion valve

Pulse controlled by

the temperature differ-

ence calculation and

frost prevent fuction

Each operation mode is controlled as below. (1) Stop mode

Indoor fan motor : OFF Electric expansion valve Drain pump

: Stop pulse : Turns ON-OFF by the drain pump control function

Operates according to

the AIR FLOW-MODE

setting, and besides

cold air prevention

operation

Pulse controlled by

the temperature dif-

ference calculation

and frost prevent

function

Heat

Pulse controlled by

the temperature dif-

ference.

(3) Priority mode

The purpose of the priority mode is to restrict operation commands (heating, cooling, dry) from the connected indoor units. There are 3 priority modes of Neutral, Cooling Priority, and Heating Priority. The operation modes restricted by each of these modes are as follows:

Priority mode

Neutral

Cooling priority

Heating priority

Restricted operation mode

No restrictions

Heating

Cooling, dry

Neutral

Cooling priority

Heating priority

Cooling priority

Heating priority

1. Priority mode decision methods Method 1. (Default value) The initial priority mode is made Neutral and is shifted to Cooling Priority when cooling and to Heating Priority when heating depending on which operation mode (cooling, heating) was input first. After shifting to Cooling Priority or Heating Priority, the priority mode shifts to Neutral only when there was a Stop input from all the indoor units.

Method 2. (Management by outdoor unit) Operation mode management is made "Management by outdoor unit" by outdoor unit PUSH-SW (field setting). The priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the outdoor unit regardless of the current mode.

Page 43

03-03

Cooling priority

Heating priority

Method 3. (Management by indoor unit) Operation mode management is made "Management by indoor unit" by outdoor unit PUSH-SW (field setting). Then the master indoor unit is set by wired remote controller. Thereupon the priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the master indoor unit regardless of the current priority mode. The priority mode is fixed at either cooling or heating even if the master indoor unit stops Cooling/heating switching can be performed by the master indoor unit only.

(4) Opposite operation mode When the operation mode commanded from an indoor unit (remote controller) and the operation mode allowed by the system (cooling and dry operation for cooling only type and operation mode allowed by priority mode for heat pump type) do not match, it is indicated by blinking of an LED.

Timer lamp: 3 secs ON/1 sec OFF repeated

Page 44

03-04

3-2-1 Operation Mode Control for Outdoor air unit

(2) Cool and Heat Mode

Outdoor air unit fan motor

Operates according to the

HIGH MODE setting.

Cool

Drain pump

Turns ON-OFF by the drain pump control function

Electrical expansion valve

Solenoid valve

Pulse controlled by the

temperature difference

calculation and

freeze prevention control

Each operation mode is controlled as below.

(1) Stop mode

Outdoor air unit fan motor : OFF Electric expansion valve Drain pump

: Stop pulse : Turns ON-OFF by the drain pump control function

Solenoid valve : Cl

osed

Operates according to the

HIGH MODE setting.

Heat

Pulse controlled by the

temperature difference.

Each operation mode is controlled as below.

Fan

Operates according to the

HIGH MODE setting.

Stop pulse

Closed at all times

Opened at thermostat off

and compressor on.

Closed at other operation.

Closed at all times

Page 45

03-05

Cooling priority

Heating priority

Method 3. (Management by indoor unit)

Operation mode management is made "Management by indoor unit" by Outdoor unit PUSH-SW (field setting). Then the master indoor unit is set by wired remote controller. Thereupon the priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the master indoor unit regardless of the current priority mode. The priority mode is fixed at either cooling or heating even if the master indoor unit stops Cooling/Heating switching can be performed by the master indoor unit only.

(4) Opposite operation mode

When the operation mode commanded from an indoor unit (remote controller) and the operation mode allowed by the system (cooling and dry operation for cooling only type and operation mode allowed by priority mode for heat pump type) do not match, it is indicated by blinking of an LED.

Timer lamp: 3 secs ON/1 sec OFF repeated

(3) Priority mode

The purpose of the priority mode is to restrict operation commands (heating, cooling) from the connected outdoor air units. There are 3 priority modes of Neutral, Cooling Priority, and Heating Priority. The operation modes restricted by each of these modes are as follows:

Priority mode

Neutral

Cooling priority

Heating priority

Restricted operation mode

No restrictions

Heating

Cooling

Neutral

Cooling priority

Heating priority

Cooling priority

Heating priority

1. Priority mode decision methods

Method 1. (Default value)

The initial priority mode is made Neutral and is shifted to Cooling Priority when cooling and to Heating

Priority when heating depending on which operation mode (cooling, heating) was input first.

After shifting to Cooling Priority or Heating Priority, the priority mode shifts to Neutral only when there

was a Stop input from all the indoor units.

Method 2. (Management by Outdoor unit)

Operation mode management i

s made "Management by Outdoor unit" by Outdoor unit PUSH-SW (field setting). The priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the Outdoor unit regardless of the current mode.

Page 46

03-06

3-2-2 Auto Changeover

Operation flow chart

START

Room temp.

Ts+2°C ?

COOLING OPERATION

HEATING OPERATION

YES

AUTO CHANGEOVER operation

TS : Setting temperature

Ts- 2°C ?

[Method]

1. Switch operation mode management to "Management by indoor unit" by outdoor unit DIP-SW.

2. Set the master indoor unit by wired remote controller.

3. Judge cooling/heating by the difference between the master indoor unit's setting temperature and the room temperature.

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

YES

Page 47

03-07

3-2-2 Auto Changeover Heating / Cooling Operation for Outdoor air unit

Operation flow chart

START

Suction airflow temp.

Ts+5°C ?

COOLING OPERATION

HEATING OPERATION

YES

AUTO CHANGEOVER operation

TS : Setting temperature

Ts- 5°C ?

Setting Method

1. Switch operation mode management to "Management by outdoor air unit" by Outdoor unit PUSH-SW.

2. Set the master outdoor air unit by wired remote controller.

3. Judge cooling/heating by the difference between the master outdoor air unit's setting temperature and the suction airflow temperature

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

YES

Function is available when an outdoor air unit set as the administrative indoor unit (Management Outdoor air unit). Refer to the setting Method

Page 48

03-08

3-2-3 "COOL" Position

An example for COOLING TEMPERATURE CONTROL time chart (Manual setting)

When using the cooling mode, set the temperature to a value lower than the current room temperature, otherwise the indoor unit will not start the cooling operation and only the fan will rotate.

• Indoor fan

• Opening of EEV

100% 0%

• Refrigerant flow

ON OFF

• Temperature

Ts + 0.5 C

3Min.

Ts : Corrected setting temperature T

R : Corrected room temperature

: The thres hold temperature of start of refrigrant flow

: The thres hold temperature of stop of refrigrant flow

Ts - 0.5 C

Ts + 0.5 C

Ts - 0.5 C

Ts + 0.5 C Ts - 0.5 C

: The thres hold temperature of start of refrigrant flow

: The thres hold temperature of stop of refrigrant flow

Ts + 0.5 C Ts - 0.5 C

3-2-4 "HEAT" Position

(1) When using the heating mode, set the temperature to a value higher than the current room temperature, otherwise the indoor unit will not start the heating operation.

(3)

An example for HEATING TEMPERATURE CONTROL time chart (Manual setting)

During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation will be tem

porarily interrupted.

• Indoor fan

• Opening of EEV

100% 0%

• Refrigerant flow

ON OFF

• Temperature

4Min.

1Min.

4Min.

1Min.

4Min.

1Min.

Ts : Corrected setting temperature T

R : Corrected room temperature

: Duration of cold air prevention

(2) After the start of heating operation, the fan of indoor unit will not rotate until the heater exchange is warmed up to blow out warm air.

Page 49

03-09

3-2-4 "COOL" Position for Outdoor air unit

An example for COOLING TEMPERATURE CONTROL time chart (Manual setting)

When using the cooling mode, set the temperature to a value lower than the discharge airflow temperature, otherwise the outdoor air unit will not start the cooling operation and only the fan will rotate.

• Outdoor air unit fan

• Opening of

EEV

100%

• Refrigerant flow

ON OFF

• Discharge airflow

Temperature

Outdoor temp.

Ts : Corrected setting temperature

Ts - 5°C

Ts + 0.5°C : The thres hold temperature of start of refrigerant flow Ts - 5°C : The thres hold temperature of stop of refrigerant flow

3-2-5 "HEAT" Position for Outdoor air unit

(1) When using the heating mode, set the temperature to a value higher than the discharge airflow temperature, otherwise

the outdoor air unit will not start the heating operation.

(2)

An example for HEATING TEMPERATURE CONTROL time chart (Manual setting)

During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation will be temporarily interrupted.

Excess capacity area

Compressor ON (6 minutes)

Compressor OFF (3 minutes)

Compressor ON (6 minutes)

5 minutes has passed at excess capacity area

Compressor ON (6 minutes)

Compressor OFF (3 minutes)

• Outdoor air unit fan

• Opening of

EEV

100%

• Refrigerant flow

ON OFF

• Discharge airflow

Temperature

Outdoor temp.

Ts : Corrected setting temperature

Ts +5°C

Ts - 0.5°C : The thres hold temperature of start of refrigerant flow Ts + 5°C for 5 minutes or more

: The thres hold temperature of stop of refrigerant flow

Excess capacity area

Page 50

3-3 LOUVER CONTROL

03-10

Instructions relating to heating ( ) are applicable only to heat pump type outdoor unit.

Begin air conditioner operation before performing this procedure.

Vertical Air Direction Adjustment

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR/CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE", "COMPACT WALL MOUNTED TYPE" and "COMPACT FLOOR TYPE" .

Press the VERTICAL AIR FLOW DIRECTION SET button.

LARGE CEILING TYPE

UNIVERSAL FLOOR/CEILING TYPE

Example : When set to vertical air direction.

DANGER!

(1) ADJUSTING THE DIRECTION OF AIR CIRCULATION

WALL MOUNTED TYPE

Never place fingers or foreign objects inside the outlet ports, since the internal fan opertes at high speed and could cause personal injury.

Always use the remote control umit's AIR FLOW DIRECTION button to adjust the UP/DOWN air direction flaps or RIGHT/LEFT air direction louvers. At tempting to move them manually could result in improper operation; in this case, stop operation and restart. The louvers should begin to operate properly again. When used in a room with infants, children, elderly or sick persons, the air direction and room temperature should be considered carefully when making settings.

COMPACT WALL MOUNTED TYPE

COMPACT FLOOR TYPE

CASSETTE TYPE

Press the VERTICAL AIRFLOW DIRECTION button. The temperature display will change to the vertical airflow direction setting display.

Use the air direction adjustments within the ranges shown above.

The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.

During Cooling mode : Horizontal flow During Heating mode : Downward flow

During AUTO mode operation, for the first minute after beginning operation, airflow will be horizontal , the air direction cannot be adjusted during this period.

1 4

Cooling & Dry : 1 , 2 , 3 , 4

Heating : 1 , 2 , 3 , 4

Press the VERTICAL AIRFLOW DIRECTION button to change the vertical louvre position. The position number will appear on the display.

Page 51

Horizontal Air Direction Adjustment

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR/CEILING TYPE" and "WALL MOUNTED TYPE".

Press the HORIZONTAL AIR FLOW DIRECTION SET button.

LARGE CEILING TYPE

UNIVERSAL FLOOR/CEILING TYPE

WALL MOUNTED TYPE

Example : When set to horizontal air direction.

(2) SWING OPERATION

Instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR / CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE", "COMPACT WALL MOUNTED TYPE" and "COMPACT FLOOR TYPE".

Begin air conditioner operation before performing this procedure.

To select Vertical airflow SWING Operation

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR/CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE", "COMPACT WALL MOUNTED TYPE" and "COMPACT FLOOR TYPE".

03-11

Press the VERTICAL SWING button for more than two seconds.

The remote controller's Vertical Swing Display will light up. In this mode, the UP/DOWN air direction flaps will swing automatically to direct the air flow both up and down.

Example : When set to vertical swing.

Press the HORIZONTAL AIRFLOW DIRECTION button. The temperature display will change to the horizontal airflow direction setting display.

Press the HORIZONTAL AIRFLOW DIRECTION button to change the horizontal louvre position. The position number will appear on the display.

Cooling & Dry : 1 , 2 , 3 , 4 , 5

Heating : 1 , 2 , 3 , 4 , 5

To Stop Vertical airflow SWING Operation

Press the VERTICAL SWING button for more than two seconds once and again.

The remote controller's Vertical Swing Display will go out. Airflow direction will return to the setting before swing was begun.

Page 52

Instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR / CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE", "COMPACT WALL MOUNTED TYPE", and "COMPACT FLOOR TYPE".

About Vertical Airflow SWING Operation

About Horizontal Airflow Swing Operation

Air flow direction set Range of swing

Air swing range

To select Horizontal Airflow SWING Operation

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR / CEILING TYPE", "WALL MOUNTED TYPE".

Press the HORIZONTAL SWING button for more than two seconds.

The remote controller's Horizontal Swing Display will light up. In this mode, the RIGHT/LEFT air direction louvers will swing automatically to direct the airflow both right and left.

To stop Horizontal airflow SWING Operation

Press the HORIZONTAL SWING button for more than two seconds once and again.

The remote controller's Horizontal Swing Display will go out. Airflow direction will return to the setting before swing was begun.

Example : When set to horizontal swing.

Range of swing

03-12

The SWING operation may stop temporarily when the air conditioner's fan is not operating, or when operating at very low speeds.

The swing operation is not available depending on the model. Please refer to the operating manual for the indoor unit.

The SWING operation may stop temporarily when the air conditioner's fan is not operating, or when operating at very low speeds.

The swing operation is not available depending on the model. Please refer to the operating manual for the indoor unit.

Left and right swing range can be changed in 3 steps by field setting.

( Factory setting)

Function Number Setting Value

Left and right swing range

1 to 5 (All range)

1 to 3

3 to 5

1 to 4 (All range)

Page 53

3-4 ELECTRONIC EXPANSION VALVE CONTROL

03-13

3-5 DRAIN PUMP OPERATION

1. Initialization

2. Operation Control

When starting up

Automatic operatic control

Automatic PI control is performed based on the indoor unit heat exchanger outlet temp and inlet temp.

Room temperature control

The room temperature is controlled so that it reaches to the set-up temperature based on the difference between the room temperature and the set-up temperature, and the change of indoor unit temperature. if the room temperature becomes 0.5 C lower than the set-up temperature, EEV is fully closed.

3. Special Control

(1) When cooling and refrigerant circulation starts, the drain pump starts simultaneously. (2) The drain pump operates continuously for 3 minutes after the refrigerant circulation stopped. (3) When the refrigent circulation is stopped by a start of indoor heat exchanger frost prevention operation, the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost prevention operation. (4) When the water level in the drain pan rises up and then the float switch functions:

Microcomputer stops the refrigerant circulation and indoor fan motor operation. Drain pump operates continuously for 3 minutes after the float switch is turned off.

(Almost condensing water may be drained) (5) When the float switch turns ON continuously for 3 minutes, 'FAILURE INDICATION' operates. (6) Whe

n the float switch turns OFF within 3 minutes, the unit starts cooling operation.

1 2

When the power is turned ON. When it has passed the limited time since the last initialization.

When indoor unit stopping

Oil recovery operation : Controlled pulse. Test run operation : Controlled pulse. Icing protection control : Fully closed. Pump down operation : Fully open. Defrost operation : Controlled pulse

Outdoor unit Condition

EEV Condition

Cooling

Heating

Fully closed

Slightly open

(Cooling) Move to the cooling control base pulse in steps. (Heating) Move to the heating control base pulse in steps.

OFF

Fully closed

Page 54

3-4 ELECTRONIC EXPANSION VALVE CONTROL for Outdoor air unit

03-14

3-5 DRAIN PUMP OPERATION for Outdoor air unit

1. Initialization

2. Operation Control

When starting up

Automatic operatic control Automatic PI control is performed based on the indoor unit heat exchanger outlet temp and inlet temp.

Discharge airflow temperature control The discharge airflow temperature is controlled so that it reaches to the set-up temperature based on the difference between the discharge airflow temperature and the set-up temperature. Cooling operation: 1) If the discharge airflow temperature becomes 5°C lower than the set-up temperature,

EEV is fully closed.

2) If the suction airflow temperature becomes 0.5°C lower than the set-up temperature, EEV is fully closed.

Heating operation: 1) If the discharge airflow t

emperature becomes 5°C higher than the set-up temperature

for 5 minutes or more, EEV is fully closed.

2) If the suction airflow temperature becomes 0.5°C higher than the set-up temperature, EEV is fully closed.

3. Special Control

operation, the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost prevention operation.

(4) When the water level in the drain pan rises up and then the float sw

itch functions: Microcomputer stops the refrigerant circulation and indoor fan motor operation. Drain pump operates continuously for 3 minutes after the float switch is turned off. (Almost condensing water may be drained)

(5) When the float switch turns ON continuously for 3 minutes, 'FAILURE INDICATION' operates. (6) When the float switch turns OFF within 3 minutes, the unit starts cooling operation.

1 2

When the power is turned ON. When it has passed the limited time since the last initialization.

When indoor unit stopping by Thermo-OFF condition.

Oil recovery operation : Controlled pulse(Maximum 1400 puls) Test run operation : Controlled pulse. Freeze prevention control : Fully closed. Vacuuming operation : Fully open. Defrost operation : Controlled pulse(Maximum 1400 puls)

Outdoor unit Condition

EEV Condition

Cooling

Heating

Fully closed

(Cooling) Move to the cooling control base pulse in steps. (Heating) Move to the heating control base pulse in steps.

OFF

Fully closed

Page 55

3-6 FUNCTION

03-15

3-6-1 Auto Restart

The air conditioner restarts with the previous setting operation.

3-6-2 Icing Protection Control

3-6-3 Oil Recovery Operation

[Oil recovery operation] : It periodically returns the residual refrigerant ion oil in the indoor unit and the connection piping back to the outdoor unit , and prevents the compressor oil level from decreasing.

6 sec ON 2 sec OFF Blinking

Indoor unit LED : Operation LED

Indoor fan : Same operation before oil recovery operation.

Indoor EEV : Control pulse

During the above operation, a refrigerant noise may be from the indoor unit.

The icing of the indoor heat exchanger is prevented during the cooling and dry mode operation.

(1) Starting Condition Compressor is operation more than 3 minutes. When "Heat exchanger inlet temperature T

A" continues *4 minutes or more.

Compressor is operation more than 3 minutes. When "Heat exchanger outlet temperature T

A" continues 4 minutes or more.

(2) Operation

EEV is closed.

Fan is at the setting amount.

(3) Completing Condition Heat exchanger inlet and middle temperature T

After more than 5 minutes

Drain pump turns off at 60 minutes past the completion of the icing protection operation.

1°C

7°C

Page 56

03-16

3-6-4 Outdoor temperature protected operation for Outdoor air unit

1. COOL OPERATION

The contents of operation is controlled as following based on the suction airflow temperature.

a) Operation mode management is made

"Management by indoor unit", and

outdoor air unit is master indoor unit.

b) Cases Other than (a)

2. HEAT OPERATION

The contents of operation is controlled as following based on the suction airflow temperature.

Cooling operation

Heat

ing operation

Fan operation

3. FAN OPERATION

The contents of operation is controlled as following based on the suction airflow temperature.

a) Operation mode management is made

"Management by indoor unit", and

outdoor air unit is master indoor unit.

-5°C

18°C

Suction airflow temperature rises

Suction airflow temperature drops

20°C

10°C

5°C

-7°C

Forced thermostat off and Fan off

Cooling operation

Fan operation

18°C

Suction airflow temperature rises

Suction airflow temperature drops

20°C

10°C

5°C Forced thermostat off and Fan off

Heating operation

Fan operation

19°C

Suction airflow temperature rises

Suction airflow temperature drops

21°C

-5°C

-7°C Forced thermostat off and Fan off

Heating operation

Fan operation

5°C

Suction airflow temperature rises

Suction airflow temperature drops

10°C

-5°C

-7°C Forced thermostat off and Fan off

Fan operation

5°C

Suction airflow temperature rises

Suction airflow temperature drops

10°C

Forced thermostat off and Fan off

Page 57

3-7 TIMER CONTROL

03-17

3-7-1 Wireless Remote Controller

There are following 4 kinds of timer modes are available.

ON Timer OFF Timer PROGRAM Timer SLEEP Timer

1. ON / OFF TIMER

3. SLEEP TIMER

2. PROGRAM TIMER

To set the PROGRAM timer

4 5

Select "OFF TIMER" Adjust the OFF time. Select "ON TIMER"

Adjust the ON time.

(About 5 seconds later, the entire display. will reappear.)

Select "PROGRAM TIMER"

(Either OFF ON or OFF ON will display.) (If the ON timer has been se lected to operate first, the unit will stop operating at this point.)

Select "CANCEL".

The air conditioner will return to normal operation.

To cancel the TIMER

*To change operating conditions

If you wish to change the operating conditions (ON/OFF,Mode, Fan Speed, Temperature Setting), after making the time setting, wait until the entire display reappears, then press the appropriate buttons to change to the desired operating condition.

Press the START/ STOP button to start the air conditioner, and then proceed as follows.

The timer functions cannot be used when this controller is used together with the remote controller (Wired type). A beeping sound is made when a signal is received.

To set the ON / OFF timer

Adjust the OFF or ON time.

(About 5 seconds later, the entire display will reappear.)

Press the TIMER MODE button to select "OFF TIMER" or "ON TIMER"

CANCEL OFF TIMER ON TIMER

PROGRAM TIMER (OFF ON, OFF ON)

Press the START/ STOP button to start the air conditioner, and then proceed as follows.

To set the SLEEP timer

(Both the indoor unit's OPERATION indi cator lamp (green) and the TIMER indi cator lamp (orange) will light.)

Select "CANCEL".

The air conditioner will return to normal operation.

Adjust the OFF time.

(About 5 seconds later,the entire display will reappear.)

To change the timer settings

1 2

*To cancel the TIMER

Press the SLEEP button once again.

Set the time using the TIMER SET buttons.

Unlike other timer functions, the SLEEP timer is designed to set the duration of time in which the unit does not operate. The SLEEP timer can be set regardless of whether the indoor unit is operating or stopped.

* Even ON/OFF and Sleep timer are valid.

* Even ON/OFF and Program timer are valid.

UTY - LNH

*To stop air conditioner operation during timer operating

Page 58

03-18

Sleep timer

The sleep timer function automatically corrects the temperature thermostat setting according to the time setting to prevent excessive cooling and heating while sieeping.

Cooling operation / dry operation Heating operation

When the sleep timer is set, the set temperature automatically rises 1°C every hour.The set temperature can rise up to a maximum of 2°C

Timer setting

60min.

1°C

2°C

When the sleep timer is set, the set temperature sutomatically drops 1°C every 30 minutes. The set temperature can drop to a maximum of 4°C

1 C

2 C

3 C

4 C

30min.

60min.

90min.

Timer setting

Page 59

03-19

3-7-2 Group Remote Controller

UTY - CGG

WEEKLY TIMER

Different schedules can be set for each day of the week. Four timers can be set for each day. Operation on/off time, operation mode, and temperature can be specified for each timer.

1. WEEKLY TIMER

The timer function is not available depending on the initial setting.

Note: When a time is not set, the weekly timer cannot be started.

Different schedules can be set for each day of the week.

Four timers can be set for each day

Press the ALL TIMER button to start or cancel the WEEKLY timers for all indoor units.

If any of the indoor units are in the timer mode, pressing this button cancels the timers for all indoor units. If none of the indoor units are in the timer mode, pressing this button starts the timers for all indoor units.

Press the Select button to select the indoor unit.

Press the PROGRAM (CLOCK ADJUST) button.

* Do not press this button for two sec onds or more, otherwise you will en ter the time setting mode.

Press the Select button to select the indoor unit.

* If all indoor units are selected, the times for all of the registered indoor unit timers are set at once.

ı ˇ ı

Day of the week setting

S M T W T F S

ALL

All indoor units

SUN MON TUE WED THU FRI SAT

Press the Timer Mode (DELETE) button to start or cancel the WEEKLY timers.

The timer does not start if the time is not set.

Press the DAY button to select the day of the week.

* For ALL, all of the days can be set together when a appears around each day.

To start / cancel the WEEKLY timer operation

To set the WEEKLY timer

Press the Set Time buttons to set the time in 10-minute increments. * Hold down a Set Time button to adjust the time quickly.

* The time already set at another timer is skipped at the relevant indoor unit.

Decrement Increment

Timer setting

Page 60

03-20

NOTES

To delete the operating time

Operating setting

Raise

Lower

Press the Start/Stop button or the Mode button or the Set Temperature button to set the operation.

* For the operations that can be set, refer to "Operation mode setting", "Room tem perature setting", and "To start /stop operation" , in "OPERATION". * Only the current operation settings are displayed.

ex.TIMER-1 will start operation at 8:00 on COOL.

Setting the next timer for the same day:

TIMER-1 TIMER-2 TIMER-3 TIMER-4

Then press the ENTER button to proceed to the time setting, and repeat steps from to .

4 5

Repeat steps to to set the timer for another day of the week.

3 5

Be careful for pressing the ENTER button without any operation setting because the time that is set will be cancelled.

When the operating time is set, the mark appears.

ex. TIMER-1 will start operation at 8:00 on COOL with a set ting of 20 C

1. Press the ENTER button to confirm the set timer.

2. Press again the PROGRAM (CLOCK ADJUST) button to complete the weekly timer setting.

flashes for two seconds.

ı ˇ ı

Setting the timer for the other indoor units:

Before setting the timer for other indoor units, press the ENTER button to confirm the settings. * The display switches to the next timer.

Repeat steps to to set the timer for other indoor units.

2 6

1. If the Timer Mode (DELETE) button is pressed during steps to , the operat ing time for the selected day will be deleted. * If all the days are selected, the operating times for all of the days of the se lected timer will be deleted.

2. Press the ENTER button to confirm the deletion.

3 7

(1) The WEEKLY timer does not operate when the HEAT timer is set if a HEAT PUMP MODEL in the air conditioning system is operating in the cooling mode. In addition, the WEEKLY timer does not operate when the COOL or DRY timer is set if a HEAT PUMP MODEL in the air conditioning system is operating in the heating mode. (2) Even if the timer operation is set, the timer lamp of the indoor unit

does not light up. (The timer lamp is used for wireless remote controller only.) (3) If the same time is set in Timer-1 to Timer-4 of an indoor unit, the timer setting of the smallest number will be effective.

Page 61

03-21

3-7-3 Wired Remote Controller

UTY - RNK

ON / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER

1. ON / OFF TIMER

The timer function is not available depending on the model.

To set the ON/OFF timer

Press the timer mode button to select the ON timer or OFF timer. It is switched every time as shown in the below diagram when the button is pressed.

Press the DELETE button to cancel the timer mode. The timer mode can also be canceled by changing the timer mode using the timer mode button.

NON STOP

OFF TIMER

ON TIMER

WEEKLY TIMER

No display

Press the set time buttons to set the time. After the time is set, the timer will start automatically. The amount of time until the OFF timer operates that is displayed on the timer display decreases as time passes.

From 1 to 24 hours

ex. OFF timer set for 6 hours

To cancel

SUMOTUWETH FR

Page 62

03-22

2. WEEKLY TIMER

The timer function is not available depending on the model.

Press the timer mode button to select the weekly timer.

Press the SET button for 2 seconds or more.

SUMOTUWETH FR

3 6 9

12 15 18 21

Day of the week setting

Press the DAY button to select the day of the week, and then press the TIMER SET button to confirm the setting.

For ALL, all of the days can be set together when a each day.

appears around

ALL SU MO TU WE TH FR SA

SUMOTUWETH FR

3 6 9

12 15 18 21

Weekly timer setting

Time setting (ON / OFF timer)

Press the SET TIME buttons to set the ON time in 30-minute increments, then press the TIMER SET button to proceed to the OFF time setting. Set the OFF time in the same way. If necessary, set the second weekly timer settings in the same way.

When the operating time is set, the

mark appears.

Press the TIMER SET button for 2 seconds or more to complete the weekly timer settings.

To delete the operating time

If the TIMER DELETE button is pressed during steps or , the operating time for the selected day will be deleted. If all the days are selected, the operating times for all of the days will be deleted.

ex. The timer is set for 7:00-18:00.

Repeat steps and to set the weekly timer for another day of the week.

3 4

ON-1 OFF-1 ON-2 OFF-2

Time setting (Independent OFF timer)

Press the TIMER MODE button to change to the independent OFF timer setting. * The time setting process is the same as the ON/OFF timer. Press the TIMER MODE button to return to the ON/OFF timer setting.

Switching from ON/OFF timer to independent OFF timer

The independent timer will flash on the display.

ON-2 OFF-2 OFF-2 OFF-3

Page 63

03-23

SUMOTUWETH FR

3 6 9

12 15 18 21

SUMOTUWETH FR

3 6 9

12 15 18 21

To start

When the weekly timer is selected, the timer starts automatically.

To cancel

Press the TIMER DELETE button to cancel the timer mode. The timer mode can also be canceled by changing the timer mode using the TIMER MODE button.

During the weekly timer, press the TIMER SET button for 2 seconds or more to set the day.

Select the day to set the DAY OFF.

Press the DAY (DAY OFF) button for 2 seconds or more to set the DAY OFF.

Press the TIMER SET button for 2 seconds or more to c

omplete the

DAY OFF setting.

2 3 4

To cancel

Follow the same procedures as those for setup.

ex. The DAY OFF is set for Monday.

NOTES

The DAY OFF setting is only available for days for which weekly settings already exist. If the operating time carries over to the next day (during a next day setting), the effective DAY OFF range will be set as shown below.

Normal Next day setting

Setting dayPreceding day Next day Setting dayPreceding day Next day

The DAY OFF setting can only be set one time. The DAY OFF setting is cancelled automatically after the set day has passed.

Flashing mark: indicates the DAY OFF.

ON OFF ON OFF

DAY OFF

WEEKLY WEEKLY

WEEKLY

OFF ON OFF

DAY OFF

To start /cancel the WEEKLY timer operation

To set the DAY OFF (for a holiday)

3 6 9

12 15 18 21

The operating time for the current day is displayed.

ex.Operating time 7:00-18:00 Indpnd. OFF time 21:00

The independent timer will flash on the display.

NOTES

(1) PRECAUTIONS DURING WEEKLY TIMER SETUP Setup is not possible in the following cases, so amend the time. Be sure to set the ON time first, then the OFF time. If either the ON time or the OFF time is not set cor rectly, the timer will not operate properly. The WEEKLY 2 settings cannot be set earlier than the WEEKLY 1 settings. The WEEKLY 1

and WEEKLY 2 time spans cannot

overlap.

(2) The earliest OFF time you can set is 30 minutes after the ON time. (3) The OFF time can be carried over to the next day. (4) The earliest independent OFF time you can set is 30 min utes after the last OFF time. (5) An independent OFF time can be set up to 0:00 hours of the next day.

(6) Even if the timer operation is set, the timer ind

icator lamp of the indoor unit does not light up. (The timer indicator lamp is used for wireless remote controllers only.)

Page 64

03-24

3. TEMPERATURE SET BACK TIMER

The timer function is not available depending on the model.

Press the SET BACK button to change to the SET BACK confirmation display. The SET BACK operating time and the set temperature will be displayed.

Press the SET button for 2 seconds or more.

Day setting Operating time setting

Follow step and in "To set the WEEKLY timer". The DELETE button is also used as described in the procedures for the weekly timer.

NOTES

The SET BACK timer only changes the set temperature, it cannot be used to start or stop air conditioner operation. The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used. The SET BACK timer can be used together with the ON, OFF, and weekly timer functions. The SET BACK operating time is displayed only in the SET BACK confirmation display.

(Refer to step 1 for the SET BACK confirmation display. ) During the COOL/DRY mode, the air conditioner will operate at a minimum of 18°C even if the SET BACK temperature is set to 17°C or lower. Room temperatures as low as 10, 12, and 14°C cannot be set depending on the model.

SET BACK

SUMOTUWETH FR

3 6 9

12 15 18 21

SUMOTUWETH FR

3 6 9

12 15 18 21

ex. When setting all days together

Temperature setting

Press the set temperature buttons to set the temperature. (The temperature setting range is the same as the range for the operation mode.)

ex. Operating time 15:00 - 22:00

Repeat steps and . Press the SET button for 2 seconds or more to complete the temperature SET BACK timer settings.

3 4

ON OFF

24°C

28°C

SET BACK temperature

Normal temperature

To start

SET BACK

Press the SET BACK button. The SET BACK confirmation display appears for 5 seconds, and then the timer starts automatically.

ex. Display during SET BACK timer operation (The operating time will not be displayed.)

To cancel

Press the SET BACK button, and then press the DELETE button while the SET BACK confirmation display is displayed. Even if the SET BACK button is pressed again, the SET BACK timer will be cancelled.

SUMOTUWETH FR

3 6 9

12 15 18 21

If there is no existing SET BACK temperature setting, " - - " will be displayed for the temperature.

SUMOTUWETH FR

Temperature SET BACK timer setting

To start /cancel the temperature SET BACK timer operation

3 4

Page 65

3-8 DX-KIT

HEXFAN

TH: Intake/Discharge, HEX inlet/outlet

HEX

FAN

TH: HEX inlet/outlet

TH: Intake/Discharge

FGL RC.

LON

FGL Products

LON

External Controller (DDC)

Universal remote Controller

1. FGL remote/controller connection

The DX kit is controlled by a VRF operation device and use the external output of the DX kit to performe the AHU operation

indirectly.

Control devices can be unified with FGL devices.

2. External controller connection

Air conditioning control (thermostat-control) can be designed on-site. (Air conditioning control by DX is also possible.) Control equipment suited to the application can be connected.

Interface External input External output

Contents

Fan ON/OFF Thermostat ON/OFF

Interface External input

External output

Contents Operation ON/OFF Operation mode Cool/Heat Set temperature or capacity request (Analog input)

Error Operation ON/OFF Error Special operation (defrost)

Remarks

Typical indoor unit is required for mode changing. Temperature setting:

When thermo-control is performed by DX kit.

Capacity request:

When the thermo-control is performed by external controller.

Information on error occurred at external controller

Information on error occurred at VRF system The Fan operation can be stopped with the communication siginal of special operation

External Input/Output

External output

External refrigerant cycle

DX-Kit

Fan abnormal intput

3-8-1 SYSTEM CONFIGURATION

03-25

Page 66

1. FGL remote/controller connection

2. External controller connection

Air conditioning control system (SET3-3) Set temperature objective

Thermostat OFF conditions

Operation (ON/OFF/Mode/ Set temperature Fan control

Intake temperature control

Intake temperature (Room temperature)

Cooling: 18 to 30 Heating: 10 to 30

Cooling

Intake temperature < Setting temperature -0.5

Heating

Intake temperature > Setting temperature +0.5

FGL controller

Fan control commands are output from the DX kit external output terminal

Discharge temperature control

Discharge temperature

Cooling: 14 to 25 Heating: 17 to 28

Cooling

Discharge temperature < Setting temperature -5.0

Heating

Discharge temperature > Setting temperature +5.0 for 5 minutes

Air conditioning control system (SET3-3)

Analog input system (SET3-2)

Temperature

Setting range

Thermostat

OFF conditions

Capacity

input range

Thermostat OFF

conditions

Operation (ON/OFFMode/ Set temperature When error generated at external equipment Fan control

Intake temperature control

Set temperature input / Capacity input Selection Intake temperature (Room temperature)

Cooling: 18 to 30 Heating: 10 to 30

Cooling

Intake temperature < Setting temperature -0.5

Heating

Intake temperature > Setting temperature +0.5

0%, 5% to 100%

Controlled by external controller and EEV closed by making the capacity input 0% in cooling mode.

EEV slightly opened when the Compressor operating in heating mode

Controlled by external controller, input to DX Kit external input terminal

*Operation from FGL controller is disabled.

(Only monitoring is possible)

en fanmotor locked or another error was generated at the external equipment, the refrigerant cycle is

stopped by inputting an error signal to the DX Kit external input terminal. (EEV is Closed)

Control is perfomed by external equipment, but when you want to stop the fan during defrosting, use the defrost signal that is output from the DX Kit external output terminal.

Outlet temperature control

Set temperature input / Capacity input Selection Discharge temperature

Cooling: 14 to 25 Heating: 17 to 28

Cooling

Discharge temperature < Setting temperature -5.0

Heating

Discharge temperature > Setting temperature +5.0 for 5 minutes

Capacity input Temperature setting

3-8-2 FUNDAMENTAL FUNCTIONS

03-26

Page 67

Cooling operation

An example for COOLING TEMPERATURE CONTROL time chart

When using the cooling mode, set the temperature to a value lower than the target controlling temperature, otherwise the External refrigeration cycle equipment will not start the cooling operation.

• Indoor fan*

• Opening of EEV

100%

• Refrigerant flow

ON OFF

• Temperature

3Min.

Ts: Corrected Setting temperature

: The threshold temperature of start of refrigerant flow : The threshold temperature of stop of

Ts + 0.5 C Ts - 0.5 C

(1) When using the heating mode, set the temperature to a value higher than the current room temperature, otherwise

the indoor unit will not start the heating operation.

(3)

An example for HEATING TEMPERATURE CONTROL time chart

During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation will be temporarily interrupted.

• Indoor fan*

• Opening of EEV

100%

• Refrigerant

flow

ON OFF

• Temperature

Ts : Corrected Setting temperature

R : Target controlling temperature (Air intake temperature or Air discharge temperature)

: Duration of cold air prevention

(2) After the start of heating operation, the fan of indoor unit will not rotate until the heater exchange is warmed up to

blow out warm air.

TR: Target controlling temperature (Air intake temperature or Air discharge temperature)

+ 0.5 C: Air intake ctrl + C: Air discharge ctrl

- 0.5 C: Air intake ctrl

- 5.0 C: Air discharge ctrl

+ 0.5 C: Air intake ctrl + 5.0 C: Air discharge ctrl

- 0.5 C: Air intake ctrl

- 0.5 C: Air discharge ctrl

Air intake temp controlling

: The threshold temperature of start of : The threshold temperature of stop of

Ts + C Ts - 5.0 C

Air discharge temp controlling

: The threshold temperature of start of : The threshold temperature of stop of

Ts - 0.5 C Ts + 0.5 C

Air intake temp controlling

: The threshold temperature of start of

Ts - 0.5 C Ts + 5.0 C: The threshhold temperature of stop of refrigerant flow

*When the EEV operates with the minimum pulse, and it keeps for 5 minutes.

Air discharge temp controlling

0.5

refrigerant flow

refrigerant flow refrigerant flow

refrigerant flow

Heating operation

3-8-3 FUNDAMENTAL FUNCTIONS

03-27

Page 68

1. Initialization

2. Operation Control

When starting up

Automatic operatic control

Automatic PI control is performed based on the indoor unit heat exchanger outlet temp and inlet temp.

Discharge airflow temperature control

The discharge airflow temperature is controlled so that it reaches to the set-up temperature based on the difference between the discharge airflow temperature and the set-up temperature. Cooling operation: 1) If the discharge airflow temperature becomes 5°C lower than the set-up temperature, EEV is fully closed.

2) If the suction airflow

temperature becomes 0.5°C lower than the set-up temperature, EEV is fully closed. Heating operation:

If the suction airflow temperature becomes 0.5°C higher than the set-up temperature, EEV is fully closed.

ture

3. Special Control

operation.

(4) When the water level in the drain pan rises up and then the float switch functions:

Microcomputer stops the refrigerant circulation and indoor fan motor operation. Drain pump operates continuously for 3 minutes after the float switch is turned off.

(Almost condensing water may be drained) (5) When the float switch turns ON continuously for 3 minutes, 'FAILURE INDICATION' operates. (6) Whe

n the float switch turns OFF within 3 minutes, the unit starts cooling operation.

1 2

When the power is turned ON. When it has passed the limited time since the last initialization.

When indoor unit stopping by Thermo-OFF condition.

1400 puls)

Outdoor unit Condition

EEV Condition

Cooling

Heating

Fully closed

(Cooling) Move to the cooling control base pulse in steps. (Heating) Move to the heating control base pulse in steps.

OFF

Fully closed

3-8-4 ELECTRICAL EXPANSION VALVE CONTROL for DX-KIT

3-8-5 DARIN PUMP OPERATION for DX-KIT

03-28

Page 69

Auto Restart

The air conditioner restarts with the previous setting operation.

Freeze Prevention Control

Oil Recovery Operation / Defrost Operation

[Oil recovery operation / Defrost operation] : It periodically returns the residual refrigerant ion oil in the indoor unit and the connection piping back to the outdoor unit , and prevents the compressor oil level from decreasing.

6 sec ON 2 sec OFF Blinking

IR Receiver Unit LED: Operation LED

FAN output: Same operation before oil recovery operation in cooling operation or dry operation.(Heating operation: Stop)

DX-KIT EEV

: Control pulse

During the above operation, a refrigerant noise might hear from the EEV Kit.

The icing of the indoor heat exchanger is prevented during the cooling and dry mode operation.

(1) Starting Condition Compressor is operation more than 3 minutes. When "Heat exchanger inlet temperature T

A" continues *4 minutes or more.

Compressor is operation more than 3 minutes. When "Heat exchanger outlet temperature T

A" continues 4 minutes or more.

(2) Operation

EEV is closed.

Fan is at the setting amount.

(3) Completing Condition Heat exchanger inlet and middle temperature T

After more than 5 minutes

Drain pump turns off at 60 minutes past the completion of the icing protection operation.

1°C

7°C

3-8-6 FUNCTION

03-29

Page 70

4. TROUBLE SHOOTING

Page 71

Continuous lighting(lowered light)Anti Freeze

Operation LEDTest Operation

Operation LED

Power Failure

Oil Recovery

Operation LED

Defrosting

Timer LED

Continuous lighting(lowered light)Timer LEDTimer

Continuous lighting

Operation LED

Operation

Flashing PatternIndication LampIndication type

04-01

Opposite Operation Mode

4-1 NORMAL OPERATION

4. TROUBLESHOOTING

4-1-1 Indoor Unit Display

Filter Filter LED Continuous lighting

OFF

1 sec

6 sec 2 sec

OFF

Operation LED

Timer LED

Filter LED

Maintenance Mode

1 sec 1 sec

1 sec

3 sec 1 sec

OFF

1 sec 1 sec

OFF

Page 72

LED101

Inverter Compressor Operation Indication

Low Noise Mode

Compressor Temperature Protection is stopped

Low Pressure Protection is stopped

High Pressure Protection is stopped

Discharge Temp. Protection is stopped

Defrost Operation

Oil Recovery Operation

Heating Mode

Cooling Mode

Idling(stop)

Indication type 7 Segment LED Pattern

4-1-2 OUTDOOR UNIT DISPLAY

LED104

LED105

POWER

MODE

ERROR

(GREEN)

LED102

(RED)

Blank

"C" OO "L"

"H" EA "T"

"O" IL "R" ECOVERY

"D" E "F" ROST

"P" ROTECT "1"

"P" ROTECT "2"

"P" ROTECT "3"

"P" eak "C" ut

"L" OW "N" OISE

Blinking

Description

POWER LED101

ERROR LED102

OFF

"P" ROTECT "4"

ON OFF

1 sec 1 sec

Peak Cut Mode

<Starting condition> Discharge temp fixed value 120°C Release condition> 3 minutes have elapsed and discharge temperature 85°C

<Starting condition> Compressor temp fixed value 130°C <Release condition> 3 minutes have elapsed and discharge temperature 90°C

<Starting condition> Low pressure 0.05MPa or low pressure 0.10MPa continues for 10 mins <Release condition> 3 minutes have elapsed and low pressure 0.17MPa

<Starting condition> High pressure 4.20MPa <Release condition> 5 minutes have elapsed and high pressure 3.20MPa

Refer to 02-08 page for operation.

Refer to 02-09 page for operation.

Refer to 02-06 page for operation.

04-02

Page 73

Indoor Unit Water Drain Abnormal

Outdoor Unit Error

Indoor Unit Fan Motor 1 Error

Indoor Unit Heat Ex. Sensor Error

Room Temperature Sensor Error

Peripheral device Communication Error

Indoor Unit Main PCB Error

Indoor Unit Power Frequency Abnormal

Network Communication Error

Wired Remote Controller Communication Error

Error Content s

4, 6, 30 66~

17, 18, 19

24, 25

14, 15, 16

7, 8

4, 5, 6

Continuous flash2 times flash1 times flash

Continuous flash

Continuous flash6 times flash1 times flash

Continuous flash1 times flash3 times flash

2 times flash3 times flash

Continuous flash

1 times flash4 times flash

9 times flash3 times flash

Continuous flash

2 times flash4 times flash

Continuous flash

1 times flash

5 times flash

10 times flash4 times flash

Continuous flash

3 times flash5 times flash

9 times flash5 times flash

15 times flash9 times flash

Continuous flash

4 times flash1 times flash

1, 2, 3

Trouble

shooting

Filter LEDTimer LEDOperation LED

Please refer the flashing pattern as follows.

04-03

4-2 ABNORMAL OPERATION

4-2-1 Indoor Unit Display

Indoor Unit Power Supply Error For Fan Motor 1(2)

Outdoor Air Unit Temperature Sensor Error

Indoor Unit Fan Motor 2 Error

* LED Display when Option receiver unit installed.

Error Indication Flashing Pattern

0.1s / 0.1s

4.0s

1.0s

0.5s 0.5s

0.5s 0.5s 0.5s 0.5s

1.0s

0.5s 0.5s

3.0s

1.0s

4.0s

1 cycle

OFF

Operation LED

Timer LED

Filter LED

Example : Indoor Unit Main PCB Error (Operation LED : 3 times, Timer LED : 2 times)

Depending on contents of Outdoor unit, it may not indicate. (Refer to "TROUBLE LEVEL OF SYSTEM")

9 times flash hsalf suounitnoChsalf semit 2

Address setting Error

6 times flash hsalf suounitnoChsalf semit 2

Connection Unit Number Error in Wired Remote

Controller System

Indoor Unit Communication circuit (Wired Remote Controller) Error

10 times flash3 times flash

Continuous flash

hsalf suounitnoC

Indoor Unit EEV coil 1 Error

2 times flash

5 times flash

9, 10

11, 12

22, 23

Page 74

4-2-2 Outdoor Unit Display

LED101

POWER LED101

ERROR LED102

MODE

EXIT

SELECT ENTER

SW107

SW108 SW109

POWER

MODE

ERROR

(GREEN)

LED102

(RED)

0.1sec 0.1sec

OFF

POWER MODE LED : on ERROR LED : blink

ERROR transition

"Err." and quantity are alternately shown.

When there is more than one error, display is changed by "SELECT" short press.

When more than one indoor unit is abnormal, display is changed by "SELECT" short press.

"ENTER" short press"ENTER" short press

"ENTER" short press"ENTER" long press

Short press : less than 3 seconds Long press : more than 3 seconds

Annunciation

Type of errors

Address

"SELECT" short press display change

If some error is newly occured or resolved during transition, it is reflected after going

back to "Annunciation".

* Only in the case of "indoor unit abnormal (E.5U.1)", indoor unit address is shown by ENTER long press.

LED display

Operation button

ex : discharge thermistor 1 abnormal ex : indoor unit abnormal

04-04

Page 75

Trouble

shooting

Error Contents

4-2-3 Error Code List for Outdoor Unit

Error Code

Auto Address Setting Error

Indoor Unit Error

Initial Setting Error

Inverter PCB short interruption detection

Inverter Error

Inverter Communication Error

Outdoor Unit EEPROM Access Error

EEPROM Data corrupted Error

Outdoor Unit transmission PCB Parallel Communication Error

Signal Amplifier Auto Address Setting Error

Trouble

shooting

Error Contents

High Pressure Switch Error

Suction Pressure Sensor Error

Current Sensor Error

SC HE. Liquid Outlet Temp Sensor Error < TH7 >

SC HE. Gas Outlet Temp. Sensor Error < TH9 >

Discharge Pressure Sensor Error

Heat Sink Temp. Sensor Error

Suction Gas Temp. Sensor Error < TH4 >

Outdoor Temp. Sensor Error < TH3 >

Heat Ex. Liquid pipe Temp. Sensor Error < TH5 >

- - - -

2 8 . 1

5 U . 1

6 2 . 6

6 1

. 5

6 2 . 3

6 2 . 8

6 3 . 1

6 7 . 2

2 8 . 4

6 9 . 1

7 1 . 1

7 2 . 1

7 3 . 3

7 4 . 1

7 5 . 1

7 7 . 1

8 2 . 2

8 3 . 2

8 4 . 1

8 6 . 1

6 8. 2

Compressor Temp. Sensor Error < TH10 >

Discharge Temp. Sensor Error < TH1 >

Outdoor unit FAN Motor 1 Under voltage

Outdoor unit Fan Motor 1 Lock Error

(Start up Error)

Compressor Motor Loss of Synchronization

Trip Detection

Inverter Compressor Start Up Error

Outdoor unit Fan Motor 1 Temperature Abnormal

Error Code

8 6 . 3

8 6 . 4

9 3 . 1

9 4 . 1

9 5 . 5

9 7 . 1

9 8 . 5

9 A . 1

9 A . 2

A 1 . 1

A 3 . 1

Discharge Temperature Abnormal

A 4 . 1

1 29

1 4 . 5

The number of Indoor unit shortage

579 7 . 4

9 7 . 5

rorrE ) 1 evlaV noisnapxE ( lioC

8 .

rorrE ) 2 evlaV noisnapxE ( lioC

1 4 . 2

Outdoor unit Network communication abnormal 2

Outdoor Unit Reverse phase missing, phase wire Error

Rush current limiting resistor temp rise protection

A 4 . 2

A 5 . 1

A C . 4

Outdoor unit Fan Motor 2 Lock Error

(Start up Error)

Outdoor unit Fan Motor 2 Temperature Abnormal

Compressor Temperature Abnormal

High Pressure Abnormal

High Pressure Protection 1

Low Pressure Abnormal

Outdoor unit Heat Sink temp. Abnormal

04-05

Outdoor unit FAN Motor Driver Abnormal

9 7 . 9

Outdoor unit FAN Motor Driver Abnormal

9 8 . 9

Page 76

<< WIRED REMOTE CONTROLLER 3 wire type >> UTY-RNKU

<< WIRED REMOTE CONTROLLER 2 wire type >> UTY-RNRU

If an error occurs, the following display will be shown. (

“ “ will appear in the set room temperature display.)

“ “ is displayed, immediately conta ct authorized

service personnel.

Unit number (usually 0) Error code

Ex. Error code display

ERROR CODE DISPLAY

<< SIMPLE REMOTE CONTROLLER >> UTY-RSKU , UTY-RHKU

Error code

Ex. Error code display

Faulty unit No. (Remote controller address)

ERROR CODE DISPLAY

<< GROUP REMOTE CONTROLLER >> UTY-CGGY

The air conditioning system must be inspected if “ : “ (error code) appears on the timer and Clock Display, or the

operation lamp is flashing.

Model code

Error code

Ex. Error code display

ERROR CODE DISPLAY

Model code

: Outdoor unit : Indoor unit : Group remote controller : Convertor

*1 ;

If an error occurs, the following display will be shown. (

“ “ will appear in the set room temperature display.)

“

“ is displayed, immediately contact authorized

service personnel.

4-2-4 Remote Controller Display

1. Touch the [Status] on the Monitor mode screen.

2. Touch the [Error Information] on the Status screen.

2-digit numbers are corresponding to the error code

If an error occurred, an error icon appears on the Monitor mode screen.

Ex. Error code display

If an error occurs, the following display will be shown. (" " will appear in the "Monitor Mode Screen")

This appears automatically on the display if an error occurs.

Fri 10:00AM

5 /1 Page3 /1 Page

Mode Set Temp.

Air Flow Direction

Economy

1 3

02-01

14,15, 41, 44

VT HZ

Off Off

Anti Freeze

Address

Error Code

Status Menu

BackMonitor

Fan

Error InformationStatus

Error Information

Error code

2-wire remote controller address

04-06

Page 77

Trouble

shooting

Error Contents

4-2-5 Error Code List for Simple and Wired Remote Controller

Error Code

Trouble

shooting

Error Contents

Error Code

1 2

1 4

1 6

- -

2 6

3 1

3 2

4 1

4 2

5 1

5 3

Indoor Unit Main PCB Error

Indoor Unit Power Frequency Abnormal

Address Setting Error

Initial Setting Error

Network Communication Error

Remote Controller

Communication Error

Indoor Unit Fan Motor Error

Indoor Unit Heat Ex. Sensor Error

Room Temperature Sensor Error

Water Drain Abnormal

6 2

6 3

6 7

6 9

Inverter PCB short interruption detection

Inverter Error

Outdoor Unit Main PCB Error

Outdoor Unit tr

ansmissio

n PCB Parallel

Communication Error

8 2

8 3

8 4

8 6

9 3

9 4

9 5

9 7

Current Sensor Error

Liquid Pipe Temperature Sensor Error

Sub-cool Heat Ex. Gas Temperature Sensor Error

Pressure Sensor Error

Outdoor Unit Fan Motor 1 Error

Compressor Motor loss of Synchronization

Trip Detection

Inverter Compressor Start Up Error

A 1

A 3

A 4

A 5 Low Pressure Abnormal

High Pressure Abnormal

Compressor Temperature Abnormal

Discharge Temperature Abnormal

4-2-6 Error Code List for Group Remote Controller

Trouble

shooting

Error Contents

Error Code

Trouble

shooting

Error Contents

Error Code

1 4

1 6

3 1

3 2

1 2

Remote Controller

Communication Error

Indoor Unit Main PCB Error

Indoor Unit Power Frequency Abnormal

Peripheral device Communication Error

Network Communication Error

4 1

4 2

5 1

9 U

Indoor Unit Fan Motor Error

Indoor Unit Heat Ex. Sensor Error

Room Temperature Sensor Error

Water Drain Abnormal

Outdoor Unit Error

7, 8

14, 15, 16

22, 23

30 66

34, 36

14, 15, 16

22, 23

56 59

63, 64

A C Outdoor unit Heat Sink temp. Abnormal 66

Group Remote controller Hardware Error

rorrE erawtfoSAC

C 1

Main PCB Error

9 8

Outdoor Unit Fan Motor 2 Error

9 A

Coil ( Expansion Valve ) Error

7 1

7 2

7 3

7 4

7 5

7 7 Heat Sink Temperature Sensor Error

Suction Gas Temperature Sensor Error

Outdoor Temperature Sensor Error

Heat Ex. liquid pipe Temperature Sensor Error

Compressor Temperature Sensor Error

Discharge Temperature Sensor Error 41

Indoor Unit Fan Motor 2 Error

5 9

2725

4 A

Outddor Air Unit Temperature Sensor Error

24, 25,

3 9

3 A

Indoor Unit Power Supply Error for Fan Motor 1(2)

17, 18, 19

2 9

Connection Unit Number Error in

Wired Remote Controller System

11, 12

4, 5, 6

5 3

5 9

Indoor Unit EEV Coil 1 (2) Error

2725

4 A

Outdoor Air Unit Temperature sensor Error

24, 25

3 9

Indoor Unit Power Supply Error for Fan Motor 1(2)

17, 18, 19

2 9

Connection Unit Number Error in Wired Remote Controller System

11, 12

1, 2, 3

2 6

Address Setting Error 9, 10

Indoor Unit Fan Motor 2 Error

4, 6,

1, 2, 3, 91

4, 5, 6, 7, 94

Peripheral device Communication Error

7, 8, 87

9, 10, 92

Indoor Unit Communication circuit (WRC) Error

Indoor Unit EEV coil 1 (2) Error

6 1 Outdoor Unit Reverse phase missing, phase wire Error

6 8

Rush current limiting resistor temp rise protection 39

50, 51, 52

1 5

Scan Error

80, 84

3 A

Indoor unit Communication circuit (WRC) Error

1 5

Incompatible Indoor units connected

Thermo sensor Icon on the display is brinking: The integrated room temperature sensor Error --> Refer to the Trouble shooting No. 96

04-07

56 59

Page 78

4-2-8 Error Code List for External Switch Controller (UTY-TEKX)

Trouble

shooting

Error Contents

Error indiction LED1

0.5sec ON / 0.5sec OFF

0.5sec ON / 1.0sec OFF

ON, but SW1 or SW2 not operate

Power Supply Error

Switch Operation Error

Transmission Error

The abnormality in connection of remote controller cable

4-2-9 Error Code List for Signal Amplifier (UTY-VSGXZ1)

Trouble

shooting

Error Contents

Error indication of converter

- -

2 6

C 1

- -

Power Supply Error

Main PCB Error

Address Setting Error

Communication Error

Communication Error B

Communication Error A

4-2-10 Error Code List for Network Convertor (UTY-VGGXZ1)

Trouble

shooting

Error Contents

C 1

1 2

C A

- -

Power Supply Error

Software Error

Communication Error with Remote Controller

Main PCB Error

2 6

Refrigerant circuit address setting error

85, 86

LED “D14” Flashing or Lighting

Error indication of converter

1 6

Peripheral device Communication abnormal

OFF

LED “D9” Flashing or Lighting

4-2-7 Trouble shooting - No Error code -

Trouble

shooting

Error condition

Indoor Unit - No Power

Outdoor unit - No Power

No operation (Power is ON )

No Cooling

Abnormal Noise

Indoor Unit - No Power(Outdoor air unit)

No Error Code

System Abnormal

04-08

4-2-11 Error Code List for Wireless LAN Adaptor

Trouble

shooting

Error Contents

Wireless LAN adaptor Error OR Communication Error between Indoor Unit and Wireless LAN Router

97, 98

100

LED1 LED2

101, 102

ON Flashing Fast Communication Error between Wireless LAN Router and Wireless LAN adaptor

Flashing Fast ON Communication Error between Indoor unit and Wireless LAN adaptor

OFF OFF Wireless LAN adapter Non-Energized OR Wireless LAN adaptor Sleep mode

Flashing Fast Flashing Fast

Page 79

Trouble shooting 1 E12.1 INDOOR UNIT Error Method:

Wired Remote Controller Communication Error

Indicate or Display:

Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash. < 1 2 >

Outdoor Unit : E.5 U.1

Error Code : 1 2

Detective Actuators:

Indoor unit controller PCB circuit Wired Remote Control (3 wire / 2 Wire type)

Detective details:

Upon receiving the signal more than 1 time from Wired Remote or other Indoor unit, but the same signal has not been received more than 1 minute (3 Wire type). 2.5 minute (2 Wire type)

Check Point 2 : Check Remote and Controller PCB

Check terminal voltage of controller PCB Connector CNC01. (Power supply for Remote)

If DC12V, Remote Control failure (Controller PCB is OK) >>> Replace Remote controller If DC0V, Controller PCB failure (Remote is OK) >>> Replace Controller PCB

-In case of re-installation is done due to removed connector or incorrect wiring,

turn on the power again.

Check Point 1 : Check the connection of terminal

After turning off the power, check & correct the followings.

Indoor Unit - Check the connection of terminal between remote control and Indoor unit, or between Indoor units, and

check if there is a disconnection or short of the cable.

Forecast of Cause :

1. Terminal connection abnormal 2. Wired Remote Control failure 3. Controller PCB failure

4-2-12 TROUBLE SHOOTING WITH ERROR CODE

04-09

Page 80

Trouble shooting 2 E12.2 INDOOR UNIT Error Method:

Wired Remote Controller signal Error

Indicate or Display:

Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1,

Remote Controller : 1 2

Detective Actuators:

Indoor unit Controller PCB circuit Wired Remote Control (3 wire type)

Detective details:

More than 1 time of Token (Communication between wired remote controllers) is received, but it was not received more than 1 minute.

Forecast of Cause :

1. Terminal connection abnormal 2. Mis-setting 3. Wired Remote Control failure 4. Controller PCB failure

Check Point 1 : Check the connection of terminal

After turning off the power, check & correct the followings.

Indoor Unit - Check the connection of terminal between remote control and Indoor unit, or between Indoor units, and check if there is a disconnection or short of the cable.

Check Point 2 : Check Remote and Controller PCB

Check terminal voltage of Controller PCB Connector CNC01. (Power supply for Remote)

If DC12V, Remote Control failure (Controller PCB is OK) >>> Replace Remote lIf DC0V, Controller PCB failure (Remote is OK) >>> Replace Conroller PCB

In case of re-installation is done due to removed connector or incorrect wiring, turn on the power again.

04-10

Page 81

Trouble shooting 3 E12.3 INDOOR UNIT Error Method:

Number excess of device in Wired remote contorller system (2 Wires RC)

Indicate or Display:

Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 1 2

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the number of connecting Indoor unit and Remote controller in one RCgroup exceeds more than 32 units.

Check Point 2 : Check Indoor unit controller PCB

The number of connecting indoor unit and Remote controller in one RCgroup were less than 32 units.

Forecast of Cause :

1. Wrong wiring of RCgroup 2. Indoor unit controller PCB failure

Check Point 1 : Wire installation Wrong RCgroup setting

Wrong wire connection in RCgroup (Please refer to the installation manual)

Change controller PCB and check the Error after setting remote controller address

Check if controller PCB damage

04-11

Page 82

OUTDOOR UNIT Error Method ::

Outdoor Unit Network Communication 2 Error

Communication PCB connection check

Communication PCB check

Communication line connection, open check

Outdoor unit Main PCB

Check Point 1 : Noise, momentary open, voltage drop

Check if temporary voltage drop was not generated. Check if momentary open was not generated. Check if ground is connection correctly or there are no related cables near the power line.

Check Point 2 : Check the indoor unit power supply

Main power ON check

Power cable connection and open check

Check Point 3 : Check the communication line connection

Detective Actuators:

Forecast of Cause :

No communication for 180 seconds or more from an indoor unit which received communication once.

No communication for 180 seconds or more from all indoor units that once received communication.

Check Point 4 : Check the Terminal resistor setting

Terminal resistor setting check

Check Point 6 : Replace Main PCB (outdoor unit/ indoor unit)

Check Point 5 : Check the communication PCB (outdoor unit/ indoor unit)

Change Main PCB and set up the original address.

Detective details:

1. Noise, momentary open, voltage drop 2. Indoor unit power off

3. Communication line connection defective 4. Terminal resistor setting mistake

5. Communication PCB mounting defective, Communication PCB defective

6. Control PCB defective

Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Filter LED Continuous Flash. / Operation LED 1 times Flash, Timer LED 4 Times Flash, Filter LED Continuous Flash. *

Outdoor Unit : E. 1 4. 2

Error Code : 9 U / 1 4 / 1 6 / 1 4. 2

Trouble shooting 4 E14. 2

Indicate or Display:

Refer to SERVICE INFORMATION Network communication Abnormal

* Indoor unit indicates 9 U or 1 4 Peripheral device indicates 1 4 or 1 6

04-12

Page 83

Trouble shooting 5 E14. 3 INDOOR UNIT Error Method: Indoor unit Network communication Error

Indicate or Display:

Indoor Unit : Operation LED 1 times Flash, Timer LED 4 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.1 4. 1 / 1 4. 2 *

Error Code : 1 4 / 1 6 / 9 U / 14.1 / 14.2 / 14.3 *

Detective Actuators:

Indoor unit Controller PCB circuit Indoor unit Communication PCB

Detective details:

When the cut-off of network communication is detected (more than 90 seconds passed since the last receipt of Outdoor unit signal).

Check Point 2 : Check the connection

After turning off the power, check and correct followings.

Is Indoor Communication PCB loose?

Check loose or removed connection of communication line Indoor unit => Outdoor unit.

When the signal amplifier is connected , Check the error indication of signal amplifier. ( Refer to the installation manual)

Check Point 3 : Check Communication PCB

Replace Communication PCB of the Indoor units that have the error.

Forecast of Cause :

1. Outside cause 2.Connection failure 3. Communication PCB failure 4. Controller PCB failure

Check Point 1 : Check if any outside cause such as voltage drop or noise

>>Check power supply for Outdoor Unit as well.

Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave). And check the complete insulation of grounding.

>>If the same symptom does not reappear after resetting the power, possibility of noise is high.

Check Point 4 : Check Controller PCB

Replace controller PCB of the Indoor units that have the error.

* Outdoor unit indicates 1 4.1 or 1 4.2 (No communication from 14.3 Error Indoor unit) Peripheral device indicates 1 4 or 1 6

Refer to SERVICE INFORMATION Network communication Abnormal

04-13

Page 84

Trouble shooting 6 E14. 5

OUTDOOR UNIT Error Method:

The number of Indoor unit shortage Error

Indicate or Display: Outdoor Unit : E.1 4. 5

Error Code : 9 U / 1 4 / 1 6 / 1 4. 5 / 1 4. 3 *

Detective Actuators:

Outdoor unit Main PCB

Detective details:

When the indoor unit number decreases for 180 seconds from the memorized maximum indoor units number after power(Breaker) ON.

Communication PCB connection check

Communication PCB check

Communication line connection, open check

Check Point 5 : Check the communication PCB (indoor unit/ outdoor unit)

1. Indoor unit power off 2. Noise, momentary open, voltage drop

3. Communication line connection defective 4. Terminal resistor setting mistake

5. Communication PCB mounting defective, Communication PCB defective

6. Controller PCB defective

Check Point 2 : Noise, momentary open, voltage drop

Check if temporary voltage drop was not generated. Check if momentary open was not generated. Check if ground is connection correctly or there are no related cables near the power line.

Check Point 2 : Check the indoor unit power supply

Main power ON check

Power cable connection and open check

Check Point 3 : Check the communication line connection

Check Point 4 : Check the Terminal resistor setting

Terminal resistor setting check

Check Point 6 : Replace Main PCB and Communication PCB (indoor unit/ outdoor unit)

Change Main PCB and Communication PCB, and set up the original address.

Forecast of Cause :

Check Point 1 : Find the indoor unit that the communication is lost.

Check system drawing and service tool.

Attention!!

If the failure indoor unit is pinpointed and it needs to erase the error indication, it can be reset by function setting (F3-41: Maximum memorized indoor unit number reset).

Caution!!

Even if normal, this error occurs temporarily by the timing of the power ON of outdoor unit, indoor unit, and signal amplifier.

In this case, please wait for 5 minutes after turning on all the equipments.

Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Filter LED Continuous Flash. /

Refer to SERVICE INFORMATION Network communication Abnormal

*Peripheral device indicates 14,16

04-14

Page 85

Trouble shooting 7 E16. 1 INDOOR UNIT Error Method:

Transmission PCB Connection Error

Indicate or Display:

Indoor Unit : Operation LED 1 times Flash, Timer LED 6 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.1 4.1, 1 4.2 *

Error Code : 1 6 *

Detective Actuators:

Indoor unit Controller PCB circuit Indoor unit Communication PCB

Detective details:

When Parallel communication error (Communication reset occurs continuously more than specified times) is detected.

Check Point 3 : Replace Communication PCB

Replace Communication PCB ( If the symptom does not change, replace Controller PCB and set up the original address.

Check Point 1-2 : Check outside cause such as noise

Check the complete insulation of the grounding. Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave).

Check Point 1-1 : Reset the power

Check Point 2 : Check Connection

YES

Does LED error indication reappear?

Check if Indoor Communication PCB is removed.

Forecast of Cause :

1. Connection failure 2. Outside cause 3. Communication PCB failure 4. Controller PCB failure

* Outdoor unit indicates 1 4.1 or 14.2 (No communication from Indoor unit) Peripheral device indicates 1 6 ( 1 6.4 Error) Service Tool indicates 14.3 ( Missing Error Indoor unit)

04-15

Page 86

Trouble shooting 8 E16. 4 INDOOR UNIT Error Method: Communication Error Between Controller and Indoor unit

Indicate or Display:

Indoor Unit : No Display

Outdoor Unit : No Display

Error Code : 1 6 (Peripheral Unit )

Detective Actuators:

Indoor unit Controller PCB circuit Indoor unit Communication PCB

Detective details:

When the cut-off of network communication is detected (more than 90 seconds passed since the last receipt of Outdoor unit signal).

Check Point 2 : Check the connection

After turning off the power, check and correct followings.

Is Indoor Communication PCB loose?

Check loose or removed connection of communication line Indoor unit => Outdoor unit.

Refer to SERVICE INFORMATION Network communication Abnormal

When the signal amplifier is connected , Check the error indication of signal amplifier - Refer to the Installation manual-

Check Point 3 : Check Communication PCB

Replace Communication PCB of the Indoor units that have the error.

Forecast of Cause :

1. Outside cause 2.Connection failure 3. Communication PCB failure 4. Controller PCB failure

Check Point 1 : Check if any outside cause such as voltage drop or noise

>>Check power supply for Outdoor Unit as well.

>>If the same symptom does not reappear after resetting the power, possibility of noise is high.

Check Point 4 : Check Controller PCB

Replace controller PCB of the Indoor units that have the error.

04-16

Page 87

Trouble shooting 9 E26. 4 INDOOR UNIT Error Method:

Address Duplication in Wired remote contorller system

Indicate or Display:

Indoor Unit : Operation LED 2 times Flash, Timer LED 6 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 2 6

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the duplicated address number exists in one RCgroup

Check Point 3 : Check Indoor unit controller PCB

Forecast of Cause : 1. Wrong wiring of RCgroup 2. Wrong remote address setting 3. Indoor unit controller PCB failure

4. Remote controller failure

Check Point 1 : Wire installation

Wrong wire connection in RCgroup (Please refer to the installation manual)

Change controller PCB and check the Error after setting remote controller address

Check if controller PCB damage

Check Point 2 : Wrong RCgroup setting

The duplicated address number is not existing in one RCgroup

04-17

Page 88

Trouble shooting 10 E26. 5 INDOOR UNIT Error Method:

Address setting Error in Wired remote contorller system

Indicate or Display:

Indoor Unit : Operation LED 2 times Flash, Timer LED 6 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 2 6

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the address number set by auto setting and manual setting are mixed in one RC group

Check Point 3 : Check Indoor unit controller PCB

Forecast of Cause : 1. Wrong wiring of RCgroup 2. Wrong remote address setting 3. Indoor unit controller PCB failure

4. Remote controller failure

Check Point 1 : Wire installation

Wrong wire connection in RCgroup (Please refer to the installation manual)

Check if controller PCB damage Change controller PCB and check the Error after setting remote controller address

Check Point 2 : Wrong RCgroup setting

The given address number by auto setting (00) and the manual set number (Except 00) were not existing in one RCG. The remote controller address setting by U.I. were not existing same address.

04-18

Page 89

Trouble shooting 11 E29. 1 INDOOR UNIT Error Method:

Connection unit number error (Indoor unit in Wired remote controller system)

Indicate or Display:

Indoor Unit : Operation LED 2 times Flash, Timer LED 9 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 2 9

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the number of connecting indoor units are out of specified rule.

Check Point 2 : Check Indoor unit controller PCB

Forecast of Cause :

1. Wrong wiring/ Number of I.U, RC in RCgroup 2. Indoor unit controller PCB defective

Check Point 1 : Wire installation

Wrong number of connceting indoor unit

Change controller PCB and check the Error after setting remote controller address

Check if controller PCB damage

04-19

Page 90

Trouble shooting 12 E29. 2 INDOOR UNIT Error Method:

Connection unit number error (Remote controller)

Indicate or Display:

Indoor Unit : No Display

Outdoor Unit : No Display

Error Code : 2 9

Detective Actuators:

Wired remote controller ( 2-Wire )

Detective details:

When the number of connecting remote controller are out of specified rule.

Check Point 2 : Check Indoor unit controller PCB

Forecast of Cause :

1. Wrong wiring / Wrong number of connecting RC in RCgroup 2. Remote controller PCB defective

Check Point 1 : Wire installation

Wrong number of connceting remote controller

Change controller PCB and check the Error after setting remote controller address

Check if controller PCB damage

04-20

Page 91

Trouble shooting 13 E31. 3

INDOOR UNIT Error Method: Indoor unit Power Frequency Abnormal

Indicate or Display:

Indoor Unit : Operation LED 3 times Flash, Timer LED 1 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 3 1

Detective Actuators:

Indoor Unit Controller PCB Circuit

Detective details:

When 5 continuous failures occurred at Power frequency test.

Forecast of Cause :

1. Outside cause 2. Installation failure 3. Defective connection of electric components

4. Controller PCB defective

Check Point 2 : Check Installation condition

Check Point 3 : Check connection of electric components

YES

Check Cable/Breaker

Check loose or removed connection >> If Installation defect is found, correct it by referring to Installation Manual.

Check power supply voltage (AC198 - 264V between

Indoor unit terminal 1 and 2)

Check connection of Connector (any lose connector or

incorrect wiring)

Check any shortage or corrosion on PCB.

Check Point 1-1 : Reset Power Supply

Does abnormal LED indication show again?

Check Point 1-2 : Check outside cause (Voltage drop or noise, etc.)

Instant drop ---- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line (Neon bulb or electric equipment that may cause harmonic wave). Check the complete insulation of grounding.

Check Point 4 : Replace Controller PCB

Change Controller PCB and set up the original address.

04-21

Page 92

Trouble shooting 14 E32. 1 INDOOR UNIT Error Method:

Indoor unit PCB Model Information Error

Indicate or Display:

Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 3 2

Detective Actuators:

Indoor Unit Controller PCB Circuit

Detective details:

3 continuous failure of lead test of EEPROM at Power ON, or Apparent Model information error from EEPROM. Also, Error on Model information upon model information test of EEPROM, or Model information of EEPROM not possible to recover.

Forecast of Cause :

1. Outside cause 2. Connection failure of electric components 3. Controller PCB defective

Check Point 1-2 : Check outside cause (Voltage drop or noise, etc.)

Instant drop --- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line (Neon bulb or electric equipment that may cause harmonic wave). Check the complete insulation of grounding.

Check Point 3 : Replace Controller PCB

Change Controller PCB and set up the original address.

Check Point 1-1 : Reset Power Supply

Check Point 2 : Check Indoor Unit electric components

YES

Does abnormal LED indication show again?

Check all connectors (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

Note : EEPROM

EEPROM(Electronically Erasable and Programmable Read Only Memory) is a nonvolatile memory which keeps memorized information even if power is turned off. It can change the contents electronically. To change the contents, it uses higher voltage than normal, and it can not change a partial contents. (Rewriting shall be done upon erasing the all contents.) There is a limit in a number of rewriting.

04-22

Page 93

Trouble shooting 15

E32. 3

INDOOR UNIT Error Method:

Indoor unit EEPROM Access Error

Indicate or Display:

Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 3 2

Detective Actuators:

Indoor Unit Controller PCB Circuit

Detective details:

When 3 continuous failure occurred on lead test of EEPROM.

Forecast of Cause :

1. Outside cause 2. Defective connection of electric component 3. Controller PCB defective

Check Point 1-2 : Check outside cause (Voltage drop or noise, etc.)

Instant drop --- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line (Neon bulb or electric equipment that may cause harmonic wave). Check the complete insulation of grounding.

Check Point 3 : Replace Controller PCB

Change Controller PCB and set up the original address.

Check Point 1-1 : Reset Power Supply

Check Point 2 : Check Indoor Unit electric components

YES

Does abnormal LED indication show again?

Check all connectors (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

04-23

Page 94

Trouble shooting 16 E32. 7 INDOOR UNIT Error Method:

Indoor unit microcomputer self-check error

Indicate or Display:

Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 3 2

Detective Actuators:

Indoor Unit Controller PCB Circuit

Detective details:

When the error is detected by the self-diagnosis of a microcomputer

Forecast of Cause :

1. Outside cause 2. Defective connection of electric component 3. Controller PCB defective

Check Point 1-2 : Check outside cause (Voltage drop or noise, etc.)

Instant drop --- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line (Neon bulb or electric equipment that may cause harmonic wave). Check the complete insulation of grounding.

Check Point 3 : Replace Controller PCB

Change Controller PCB and set up the original address.

Check Point 1-1 : Reset Power Supply

Check Point 2 : Check Indoor Unit electric components

YES

Does abnormal LED indication show again?

Check all connectors (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

04-24

Page 95

Trouble shooting 17 INDOOR UNIT Error Method: Indoor Unit power supply error for FAN motor 1 (Outdoor Air unit)

Indicate or Display: Outdoor Unit : E.5 U.1

Error Code : 39.1

Detective Actuators:

Indoor Unit Controller PCB Circuit Indoor Unit filter PCB Circuit

Detective details:

When the DC power inpu t for Fan motor < W500 - W5 01 on the Filter PCB> becomes lower voltage t han the specified voltage.

Check Point 2 : Check wire connection

Wire lose connection / damage between the CN21on the Controller PCB and CN250 on the Filter PCB In case of Model 72, between W530 (W531) on the filter PCB and capacitor.

>>If there is abnormal on the wire, replace it

Forecast of Cause :

1. Noise momentary open, voltage drop 2. Wire conne ction 3. Fan motor

Peripheral electric devices 5. Filter PCB 6. Controller PCB

Check Point 1 : Check if any outside cause such as voltage drop or noise

Instant voltage drop ----- Check if there is any electric equipment with a large load within the same circuit. Momentary power failure ----- Check contact failure or leak current in power supply circuit Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave). And check the complete insulation of grounding.

>>If the same symptom does not reappear after resetting the power, possibility of noise is high.

Check Point 3 : Check rotation of Fan / wire resistance

Rotate the applicable fan by hand when operation is off.

Disconnect the connector from the controller PCB and Check resistance value of Motor connector

Check Point 4 : Check peripheral devices, Posistor, Capacitor, Diode bridge

Check resistance value, short circuit, visible damage

>>If there is abnormal , replace it

Check Point 5 : Replace Filter PCB

Change filter PCB

Check Point 6 : Replace Controller PCB

Change Controller PCB and set up the original address.

E.39.1

04-25

Page 96

Trouble shooting 18 INDOOR UNIT Error Method: Indoor Unit power supply error for FAN motor 2 (Outdoor Air unit)

Indicate or Display: Outdoor Unit : E.5 U.1

Error Code : 39.2

Detective Actuators:

Indoor Unit Controller PCB Circuit Indoor Unit filter PCB Circuit

Detective details:

When the DC power inpu t for Fan motor < W530 - W5 31 on the Filter PCB> becomes lower voltage t han the specified voltage.

Check Point 2 : Check wire connection

Wire lose connection / damage between the CN21on the Controller PCB and CN250 on the Filter PCB In case of Model 72, between W530 (W531) on the filter PCB and capacitor.

>>If there is abnormal on the wire, replace it

Forecast of Cause :

1. Noise momentary open, voltage drop 2. Wire conne ction 3. Fan motor

Peripheral electric devices 5. Filter PCB 6. Controller PCB

Check Point 1 : Check if any outside cause such as voltage drop or noise

>>If the same symptom does not reappear after resetting the power, possibility of noise is high.

Check Point 3 : Check rotation of Fan / wire resistance

Rotate the applicable fan by hand when operation is off.

Disconnect the connector from the controller PCB and Check resistance value of Motor connector

Check Point 4 : Check peripheral devices, Posistor, Capacitor, Diode bridge

Check resistance value, short circuit, visible damage

>>If there is abnormal , replace it

Check Point 5 : Replace Filter PCB

Change filter PCB

Check Point 6 : Replace Controller PCB

Change Controller PCB and set up the original address.

E.39.2

04-26

Page 97

Trouble shooting 19 E39. 3 INDOOR UNIT Error Method:

Indoor Unit Power Supply Error of AC24V System

Indicate or Display:

Outdoor Unit : E.5 U.1 Error Code : 3 9

Detective Actuators:

Indoor Unit Power Supply PCB Circuit Indoor Unit Power Trans Indoor Unit Controller PCB

Detective details:

When the AC voltage of the Power Trans output , Is lower than 24V.

Check Point 2 : Check the connection of terminal

After turning off the power, check & correct of followings.

Check Point 3 : Check the Power Trans and Power Supply PCB

Check terminal voltage of Power Trans and Power Supply PCB connector CN113 (AC24V IN). If AC 0V, Power Trans is failure

>>Replace Power Trans

Forecast of Cause : lamronbA noitcennoC lanimreT . 1 lamronbA ylppuS rewoP .2

3. Power Trans

4. Power Supply PCB 5. Controller PCB 6. Cable Connection failure

>>Check the connection of terminal between Power Trans and Power Supply PCB(CN113), and Check if there is a disconnection or short of the cable.

If AC24V, To the Check Point 4.

Check Point 1 : Check the Power Supply PCB and Controller PCB

Check the connection of connection terminal between Power Supply PCB(CN24) and Controller PCB(CN114) and check if there is a disconnection or short of the cable.

Check Point 4 : Replace the Power Supply PCB

Replace Power Supply PCB.

Check Point 5 : Replace the Controller PCB

Replace Controller PCB and set up the original address.

04-27

Page 98

Trouble shooting 20 E3A. 1 INDOOR UNIT Error Method:

Indoor unit communication circuit (WRC) microcomputers communication Error

Indicate or Display:

Indoor Unit : Operation LED 3 times Flash, Timer LED 10 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 3 A

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the indoor unit(s) detects the configuration of RCG abnormal or the indoor unit detects lack of primaly -remote controller.

Check Point 2 , 3: Check Indoor unit controller PCB

Forecast of Cause : 1. Terminal connection abnormal 2. Wired remote controller failure

3. Indoor unit controller PCB defective

Check Point 1 : Check the connection of terminal

Indoor unit - Check the connection of terminal between remote control and indoor unit, or between Indoor units and check if there is a disconnection or short of the cable.

Check terminal voltage of controller PCB connector CNC01 (Power supply for remote)

If DC12V, Remote control failure (Controller PCB is OK) >>> Replace Remote controller If DC0V, Controller PCB failure (Remote is OK) >>> Replace Controller PCB

In case of re-installation is done due to remobed connector or incorrect wiring, turn on the power again.

After turning off the power supply, check & correct the followings

04-28

Page 99

Trouble shooting 21 E41. 1 INDOOR UNIT Error Method:

Inlet air temp. Sensor Error

Indicate or Display:

Indoor Unit : Operation LED 4 times Flash, Timer LED 1 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 4 1

Detective Actuators:

Indoor Unit Controller PCB Circuit Inlet air temp Sensor

Detective details:

When Inlet air temp. sensor open or shortage is detected

Forecast of Cause :

1. Connector defective connection 2. Sensor defective 3. Controller PCB defective

Check Point 2 : Remove connector and check Sensor resistance value

Sensor characteristics (Rough value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 1 : Check connection of Connector

Check if connector is loose or removed Check erroneous connection Check if sensor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

6.5

8.0

10.012.515.820.225.933.6

3.032.772.502.221.941.661.391.15

3.683.483.27

2520151050

Temperature (

°C)

3.64.35.3

504540

Check Point 3 : Check voltage of Controller PCB (DC5.0V)

Corresponding connector

If the voltage does not appear, replace Controller PCB and set up the original address.

Cassette type

Duct type

Compact Wall mounted type

Wall mounted type

Floor / Ceiling type

Compact Floor type

CN8

Room temp. Sensor (Black Wires)

Model Type

Resistance Value (k )

Temperature (°C)

Voltage Value (V)

Resistance Value (k )

04-29

Page 100

Sensor Characteristics (Rough value)

If Thermistor is either open or shorted, replace it and reset the power.

Trouble shooting 22 E42. 1 INDOOR UNIT Error Method:

Indoor unit Heat Ex. inlet temp. sensor Error

Indicate or Display:

Indoor Unit : Operation LED 4 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 4 2

Detective Actuators:

Indoor Unit Controller PCB Circuit Heat Exchanger Inlet temp. Sensor

Detective details:

When open or shorted Heat Exchanger Inlet temp. sensor is detected

Forecast of Cause :

1. Connector defective connection 2. Sensor defective 3. Controller PCB defective

Check Point 1 : Check connection of Connector

Check if connector is loose or removed Check erroneous connection Check if thermistor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

Check Point 2 : Remove connector and check sensor resistance value

Check Point 3 : Check voltage of Controller PCB (DC5.0V)

Corresponding connector

Heat Ex Inlet temp. Sensor (Black Wires)

Model Type

32.4

40.0

49.862.579.1100.9129.8168.6

3.032.772.502.221.931.651.391.14

2520151050

Temperature (

°C)

17.821.626.3

3.693.493.27

504540

Temperature (°C)

Voltage Value (V)

Resistance Value (k )

Voltage Value (V)

Resistance Value (k )

04-30

If the voltage does not appear, replace Controller PCB and set up the original address.

Cassette type Duct type Compact Wall mounted type Wall mounted type Floor / Ceiling type Compact Floor type

CN5 or CN9 CN9 CN5 or CN20 CN5 or CN9 CN9 CN5

Fujitsu AUXK018GLAH, AUXK024GLAH, AUXK030GLAH, AUXK034GLAH, AUXK036GLAH Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual