Fujitsu AirStage AB12, AirStage AB24, AirStage AB14, AirStage AB18, AirStage AB30 Service Manual

R407C

Variable Refrigerant Flow System

Multi Air Conditioning System for Buildings

HEAT RECOVERY TYPE

Model : AO90

SERVICE MANUAL

Multi Air Conditioning System

for Buildings

SERVICE MANUAL

Variable Refrigerant Flow System

R407C

CONTENTS

1. TEST RUN

1-4 TEST RUN CONTROL................................................................................................

1-3-1 TEST RUN FROM OUTDOOR PC BOARD........................................................

2-2 MICROPROCESSOR FUNCTION LIST.....................................................................

2-1 PCB LAYOUTS...........................................................................................................

2. FUNCTION OF PRINTED CIRCUIT BOARD

3-1-3 3 MINUTES RESTART PREVENTION (3MIN ST)..............................................

3-1-2 COMPRESSOR OUTPUT PATTERN ................................................................

3-1-1 OPERATION / STOP CONDITION......................................................................

3-1 COMPRESSOR OPERATION CONTROL..................................................................

1-2 CHECK ITEM DURING TEST RUN............................................................................

1-1 CHECK ITEMS BEFORE TEST RUN.........................................................................

2-1-2 INDOOR UNIT CONTROL CIRCUIT BOARD

2-1-1 INDOOR UNIT CONTROL CIRCUIT BOARD.....................................................

2-1-3 OUTDOOR UNIT CONTROL CIRCUIT BOARD................................................. 02-03

WIRED REMOTE CONTROLLER, SIMPLE REMOTE CONTROLLER

CIRCUIT BOARD.................................................................................................

1-3-2 TEST RUN FROM REMOTE CONTROLLER.....................................................

2-1-4

2-2-1 INDOOR UNIT.....................................................................................................

2-2-2 OUTDOOR UNIT.................................................................................................

2-3 FUNCTION AND SETTING OF EACH SWITCH........................................................

2-3-1 INDOOR UNIT(EXCEPT FOR COMPACT WALL MOUNTED TYPE..................

2-3-2 INDOOR UNIT(COMPACT WALL MOUNTED TYPE).........................................

2-3-3 OUTDOOR UNIT..................................................................................................

2-3-4 WIRED, SIMPLE REMOTE CONTROLLER........................................................

2-4 EXTERNAL INPUT & OUTPUT..................................................................................

2-4-1 INDOOR UNIT(EXCEPT FOR COMPACT WALL MOUNTED TYPE).................

2-4-2 INDOOR UNIT(COMPACT WALL MOUNTED)...................................................

.2-4-3 OUTDOOR UNIT..................................................................................................

3. OUTDOOR UNIT OPERATION CONTROL

3-1-4 COMPRESSOR RECOVERY OPERATION........................................................

3-2 HEAT EXCHANGE CAPACITY CONTROL................................................................

3-3 OUTDOOR FAN MOTOR CONTROL........................................................................

01-01
01-02

1-3 TEST RUN METHOD.................................................................................................. 01-03

01-03
01-03
01-05

02-01

02-01

02-04

02-08

02-08

02-11

02-12

02-12

02-16

02-19

02-22

02-28

02-28

02-30

02-31

03-01
03-01
03-01
03-01
03-02
03-03
03-04

2-1-5 CENTRAL REMOTE CONTROLLER CIRCUIT BOARD......................................

02-05

2-3-5 CENTRAL REMOTE CONTROLLER.................................................................. 02-24

2-4-4 CENTRAL REMOTE CONTROLLER / PC CONTROLLER.................................

02-32

(COMPACT WALL MOUNTED TYPE)................................................................. 02-02

2-1-6 NETWORK CONVERTORS' CIRCUIT BOARD....................................................

02-06

2-3-6 NETWORK CONVERTOR.................................................................................. 02-26

2-4-5 NETWORK CONVERTOR...................................................................................

02-34

3-10 PROTECTION FUNCTIONS......................................................................................

4. INDOOR UNIT OPERATION

3-9 OIL RECOVERY CONTROL......................................................................................

03-11

04-01

03-10

5. TROUBLESHOOTING

4-1 TIMER CONTROL......................................................................................................

4-2 FAN CONTROL..........................................................................................................

4-2-1 "AUTO" POSITION..............................................................................................

4-2-2 "LOW", "MED" AND "HIGH" POSITION..............................................................

4-3 MASTER CONTROL..................................................................................................

4-3-1 OPERATION MODE CONTROL..........................................................................

4-3-2 AUTO CHANGEOVER.........................................................................................

4-3-3 "COOL" POSITION..............................................................................................

4-3-4 "HEAT" POSITION...............................................................................................

4-3-5 "FAN" POSITION.................................................................................................

4-4 LOUVER CONTROL..................................................................................................

4-5 ENERGY SAVE OPERATION...................................................................................

4-6 ANTI FREEZE CONTROL.........................................................................................

4-7 ELECTRONIC EXPANSION VALVE CONTROL.......................................................

5-1 INDOOR UNIT............................................................................................................

5-1-1 NORMAL OPERATION DISPLAY.......................................................................

5-1-2 ABNORMAL OPERATION DISPLAY...................................................................

5-2 OUTDOOR UNIT........................................................................................................

5-2-1 NORMAL OPERATING DISPLAY........................................................................

5-2-2 ABNORMAL OPERATION DISPLAY...................................................................

5-3 REMOTE CONTROLLER...........................................................................................

5-5 ERROR CODE & TROUBLESHOOTING...................................................................

5-5-1 TROUBLE SHOOTING WITH ERROR CODE....................................................

6. APPENDING DATA 1 (INSTALLATION)

6-1 ADDITIONAL CHARGE..............................................................................................

6-2 ADDRESS SETTING..................................................................................................

5-5-2 TROUBLE SHOOTING WITH NO ERROR CODE..............................................

04-06
04-06
04-06
04-07
04-07
04-08
04-09
04-09
04-09
04-10
04-13

04-14
04-15

05-01
05-01

05-03
05-03
05-04

5-3-1 WIRED REMOTE CONTROLLER....................................................................... 05-05

5-3-2 SIMPLE REMOTE CONTROLLER...................................................................... 05-05

5-3-3 CENTRAL REMOTE CONTROLLER.................................................................. 05-06

05-05

05-10
05-10
05-36

05-02

06-01
06-02

5-4 NETWORK CONVERTOR.........................................................................................

05-09

5-6 CASE SUCH AS THESE ARE NORMAL...................................................................

05-46

3-4 EXPANSION VALVES 1 AND 2 CONTROL...............................................................

3-5 CIRCULATING SAVE AMOUNT CONTROL..............................................................

3-6 SOLENOID VALVE 2 CONTROL...............................................................................

3-7 DEFROSTING CONTROL..........................................................................................

3-8 OIL RETURN CONTROL............................................................................................

03-06
03-07
03-07
03-08
03-09

4-8 AUTO RESTART........................................................................................................

4-9 DRAIN PUMP OPERATION.......................................................................................

04-15
04-15

7-1 REFRIGERANT PIPE SYSTEM DIAGRAM................................................................

7-3-1 INDOOR UNIT......................................................................................................

7-3-2 OUTDOOR UNIT..................................................................................................

7. APPENDING DATA 1 (UNIT)

7-2 CHARACTERISTICS OF SENSORS..........................................................................

7-2-1 THRMISTOR.........................................................................................................

7-2-2 PRESSURE SENSOR..........................................................................................

7-3 WIRING DIAGRAM.....................................................................................................

7-4 OUTDOOR INTERNAL LAYOUT................................................................................

07-01
07-02
07-02
07-04

07-06
07-06
07-18
07-19

6-2-1 KINDS OF ADDRESS AND SETTING RANGE....................................................

6-2-2 ADDRESS SETTING FOR COMPACT WALL MOUNTED

TYPE INDOOR UNIT.............................................................................................

6-3 PUMP DOWN METHOD.............................................................................................

6-3-1 START AND STOP OF THE PUMP DOWN.........................................................

6-4 TOOLS........................................................................................................................

06-02

06-04

06-09

06-09

6-3-2 A FLOW CHART OF PUMP DOWN.....................................................................

06-09

06-10

6-5 PRECAUTIONS FOR INSTALLATION.......................................................................

06-11

7-5 MODEL DESIGNATION ..............................................................................................

07-20

6-2-3 EXAMPLES OF SYSTEM SETTING.....................................................................

06-05

6-6 PRECAUTIONS FOR SERVICING.............................................................................

6-7 IN USE OF THE NEW REFRIGERANT R407C..........................................................

06-13

06-14

6-7-1 WHAT IS CFC/HCFC/HFC ?.................................................................................

6-7-2 CHARACTERISTICS OF R22 AND R407C..........................................................

06-14

06-14

6-7-3 DEFFERENCE FROM CONVENTIONAL MODEL(R22) AND PRECAUTIONS...

06-15

7-2-3 ELECTRIC EXPANSION VALVE..........................................................................

7-2-4 RB UNIT................................................................................................................

7-2-5 OTHERS...............................................................................................................

07-04
07-04
07-05

1 . TEST RUN

TM

R407C

Outdoor

unit

3 4W 50Hz 380 - 415V

1 50Hz
220 - 240V

Transmission line

Indoor

unit

1

13

9

10

9

10

1

14

15 16

12

13

14

2

4

3 5 6

15

16 17 18

21

Central

remote controller

Wired

remote controller

Before test run, check the following items.

Is the selection of the outdoor unit and the indoor units correct?
(Check the number of connected indoor units, total capacity of the indoor units)
Is the piping length correct?
(Ex. Maximum piping length : 100m)

Is the diameter selected separation kit correct?
Doesn't gas leak?
Have the vaccuum process done enough time?
Is the refrigerant flow correct?

1

2

Is the additional refrigerant charge amount correct?

Are the power supply cables connected?

Is the spec. for the power supply cable correct?

Is the length of the transmission line under the limit?
Is the spec. for the transmission cable correct?
(non-polar 2-core, 0.75-1.25mm )

(Note the charge amount to control box cover)

(Power supply for the indoor unit and outdoor unit is separated.)

Is the transmission cable connected to all units?

2

Is the remote controller cable connected to units?
Is not the power supply cable connected to transmission and remote controller terminal?

Are the addresses set? (Ex. Refrigerant circuit address, indoor unit address, remote controller address, etc.)

3

4

5

6

7

8

9

Is the diameter of the selected pipe correct?

10

12

13

14

15

1. TEST RUN

16

17

Have the all settings done on the PCB?

18

Is the ball valve opened?

19

Is the pipe heat-insulated which have the enough thickness?

20

Is the drain water-flow correct?

21

Is the power supplied to crank case heater for more than 12 hours before the start of test run at outdoor
temperature of 20 or below?

22

1 50Hz 220 - 240V

1-1 CHECK ITEMS BEFORE TEST RUN

01-01

7 8

19

21

22

7 20

Is the RB unit cable connected?

11

RB unit

RB unit

11

11

1-2 CHECK ITEM DURING TEST RUN

During the test run operation, check the following items.

When the power supply turn on,check the following items.
Outdoor unit : LED 1 lights continuously.
if LED flushing, it means error occurs ,check the eroor and solve the problem.
Indoor unit : LED RED (operation lamp) & GREEN (timer lamp) lights flush alternately.(Auto restart setting:Invalidity)

RC : Timer display indicates
When errors occur, don't advance towards the following step before a complete settlement of all these errors.

Start the Indoor unit test run from remote controller one by one (Refer to 1-3-2)
Check the following item.
Indoor unit
LED (red&green) light flush at the same time slowly.
Louver operates to open.
Fan rotates
Air flow comes
(Drain pump opration)
RC signal receive
Outdoor unit
Coresponds from indoor unit signal
Compressor start to operates
Fan rotates
Measure the following item.
Indoor unit
Air intake temp.
Air flow temp.
Outdoor unit
Outdoor temp.
Discharge pipe temp.
Suction pipe temp.
High pressure
Low pressure
Contlnue the operation about 10 minutes.
When there is no ploblem, check the next indoor unit.
After every indoor unit is check by test run, please do test run using all of the indoor units and check them.

1

2

3
4

01-02

Outdoor

unit

3 4W 50Hz 380 - 415V

1 50Hz
220 - 240V

Transmission line

Indoor

unit

Central

remote controller

Wired

remote controller

1 50Hz 220 - 240V

RB unit

RB unit

All LEDs go off.(Auto restart setting : Validity)

1-3 TEST RUN METHOD

Supply power to the crankcase heater for 12 hours prior to the start of operation if the outdoor temperature is lower
than 20 . The following is the procedure for the test run operation.

By setting DIP SW1-1 and SW1-2 on control PC board of outdoor unit, cooling test run or heating test run for all the indoor units
in the same refrigerant system can be performed.

1-3-1 TEST RUN FROM OUTDOOR PC BOARD

OFF [OFF,ON] or [ON,OFF]

SW1-2

Operation Mode

Select position of [SW1-2, SW1-1]

ON

ON

OFF

SW1-1

OFF

ON

ON

OFF

Normal Operation

Normal Operation

Heating Test Run

Cooling Test Run

[OFF,OFF]

[OFF,ON] or [ON,OFF]

[ON,ON]

[OFF,OFF]

[ON,OFF]

[OFF,OFF]

[OFF,ON]

01-03

1) Standard wired remote controller
Stop the indoor and outdoor units. Push the FAN CONTROL button and
MASTER CONTROL button simultaneously for more than three seconds.
The air conditioner will start to conduct a test run and TEST will display on
the remote controller display.
However, the SET TEMP./DAY setting button does not have function,
but all other buttons, displays, and protection functions will operate.

1-3-2 TEST RUN FROM REMOTE CONTROLLER

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.

2) Standard wireless remote controller

Press the test button of UTB - SA or short two pieces of metallic bodies
in the test run frame of UTB - VA, while the air conditioner is running.

To stop test run operation, push START/STOP button of the wireless
remote controller.

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

A B C D

TEST

RUN

UTB - SA

UTB - VA

*

*

*

*

SET

MASTER

CONTROL

FAN

CONTROL

TIMER
MODE

TEMP./DAY

SET TIME

CLOCK ADJUST

OP

SET

D

ZONE

ENERG

COOL

CLOCK

C

NON STOP

TEST

COOL

CLOCK

C

NON STOP

TEST

UTB - LA

UTB - LB

3) Simple remote controller
Stop the indoor and outdoor units. Push the remote controller

SET

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.

display.
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.

4) Central remote controller

CHECK

ACL

MASTER

ENERGY ANTI

FAN

TIMER

SET

TIMER

DELETE

TIMER

DAY

CLOCK
ADJUST

DAY OFF

TEMP.

MEMORY
OPERATION

MEMORY

TEST

SET

CENTRAL

DELETE

BACK

GROUP

ZONE

ON OFF

TIME

CONTROL

CONTROL

FILTER
RESET

CONTROL

FREEZE

COPY

TIMER
MODE

SAVE

SETTING SETTING

Remote control group operation settings are performed in the control mode. The following procedure for the setting is the same
for any of the control modes: Individual mode / Group control mode / All control grop.

Push to select control mode from among Individual control mode / Group
control mode / All control.

When Group control mode is selected use to select the desired group number,
then go to (3).

SET

60 minutes' test run starts.

To stop the test run, do the same procedure as those for stop a normal operatin.

It is possible to change the settings for the operation mode (heating / cooling) and fan setting.

Once the signal has been transmitted, the segment and LED
will go out. The indoor unit will start test run operation.

SET

If the test run is stopped midway, do the operation shown in (3) above and press ,

ON OFF

will come on, then do the operation shown in (4). Test run will stop.

When Individual control mode is selected, use and to select the desir­ed central control number, then go to (3).

When All control mode is selected, go directly to (3).

Press TEST and will light up. The operation setting is applied to the selected
units.

Press to send the signal and test run setting is sent to the indoor unit.

will flash as the signal is being transmitted.

(1)

(2)

(3)(4)

(1)

(2)

(3)

(4)

(5)

SELECT

NOTE :

01-04

1) When the test run signal is transmitted from standard wired, wireless remote controller, simple remote controller
and central remote controller.
(1) The test runn operation starts and the electric expansion valve is controlled to a maximum flow, regardless of
the temperature condition.

(2) De-frosting and frost prevention operation has priority over item(1).
(3) After 60 minutes passes, the test run stops. However, the operation continues in same operating mode.

2) When the test run signal is transmitted from the outdoor unit.
(1) Whether state of the indoor unit operates or stops, All units in the same refrigerant system will start to conduct a
test run in accordance with the operation

mode set by DIP SW 1-1 and SW 1-2 of outdoor unit ( see 1 - 3 - 1 ).

(2) Test running initialization is shown below.

Fan speed Hi Hi

Room Temperature Indication 18 30

Vertical Air Direction Panel

Horizontal Air Direction Panel

Swing

Operating Mode Cooling Heating

OFF OFF

1-4 TEST RUN CONTROL

Position

1

Position

4

Position

3

Position

3

Please refer to '4-4 LOUVER CONTROL' in this manual and find the definition
for air direction panel position.

01-05

2 . FUNCTION OF PRINTED CIRCUIT
BOARD

TM

R407C

2-1 PCB LAYOUTS

2-1-1 INDOOR UNIT CONTROL CIRCUIT BOARD

2. FUNCTION OF PRINTED CIRCUIT BOARD

02-01

Indoor unit

SW 1

SW 2

DIP SW

SW 3

SW 4

Room temp correct coefficient of heating 1

Room temp correct coefficient of heating 2

Room temp correct coefficient of cooling

Forbidden(Indoor unit fan speed switch 1)
Forbidden(Indoor unit fan speed switch 2)

Forbidden(Indoor unit fan speed switch 3)

Extermal input select edge / pulse

Forbidden(Indoor unit model code)

1
2
3
4

1
2
3
4

1
2
3
4
1
2
3
4

Filter check validity / invalidity

Forbidden(Indoor unit model code)

Forbidden(Indoor unit model code)

Forbidden(Indoor unit model code)

SW 6
SW 7
SW 8
SW 9
SW 10

Indoor unit address switch

Forbidden

Rotary SW

Forbidden

Forbidden

Forbidden

Auto restart validity / invalidity

Refrigeration circuit address 1
Refrigeration circuit address 2

Remote controller address

Indoor unit control circuit board

SWITCH POSITION

Wireless remote controller custom code switch 1

1

2
3

4

Wireless remote controller custom code switch 2

Frost prevention temperature shift switch

Draft prevention setting switch

SW 5

CN27

CN18

CN19 CN20 CN21

CN22 CN23

CN24

CN25

CN26

CN11

CN12

CN13

CN14

CN1

CN2

CN4

CN5

CN10

CN6

CN3

CN17

CN16

CN15

SW1

SW2

SW3 SW4

SW5

SW7

SW9

SW6

SW8

SW10

CN201

CN101

CN23

CN1

CN9

CN16

CN7

CN4

CN13

CN11

CN6

CN5

CN19

CN12

CN8

CN22

CN24

CN21

CN20

CN17

CN18

CN14

CN3

CN25

CN15

CN26

SW1

SW2

SW3

SW4

SW5

SW7

SW9

SW6

SW8

SW10

For AB / AU / AR types indoor unit

For AS / AW types indoor unit

CN101 and CN201 exist
in the PCB of power supply.

SWITCH POSITION

Compact wall mounted type indoor unit control circuit board

CN7

CN4

CN101

CN6

CN9

CN1

CN108

CN12

CN2

CN107

CN8

CN10

CN3

CN11

SW4

W101

SW5

SW1 SW2

SW3

JM1

JM2

CN104

CN105

CN102

CN103

CN106

W102

W103

W104

Controller PCB

Power supply PCB

2-1-2 INDOOR UNIT CONTROL CIRCUIT BOARD
(COMPACT WALL MOUNTED TYPE)

Indoor unit

SW 1

SW 2

DIP SW

SW 3

SW 4

Forbidden(Indoor unit fan speed switch 1)

Forbidden(Indoor unit fan speed switch 2)

Forbidden(Indoor unit model code)

1
2

3

4

1

2

3

4

1

2

3

4

Forbidden(Indoor unit model code)

Wireless remote controller custom code

Indoor unit address switch

Forbidden

Rotary SW

Forbidden

Auto restart validity / invalidity

Refrigerant circuit address switch

Refrigerant circuit address switch

SW 5

Indoor unit address switch

Refrigerant circuit address switch

Indoor unit address switch

Refrigerant circuit address switch

JM 1
JM 2

Jumper

wire

Wireless remote controller custom code

02-02

2-1-3 OUTDOOR UNIT CONTROL CIRCUIT BOARD

02-03

SW9 SW8

SW6SW7 SW5 SW4SW3 SW2 SW1

CN27 CN34

CN33

CN45

CN24

CN25

CN26

CN4

CN3

CN28

CN44

CN22

CN2

CN35

CN29

CN30

CN31

CN1

CN42

CN48

CN20

CN19

CN18 CN14

CN13 CN11 CN9 CN7

CN12 CN10 CN8

CN6

CN5

CN51

LED1
LED2
LED3

LED4

LED5
LED6

Outdoor unit

SW 1

SW 2

SW 3

SW 4

SW 5

SW 6

SW 7

1
2
3
4

1
2
3
4

1
2
3
4

1
2
3
4

1
2
3
4

1
2
3
4

1
2
3
4

Forced oil recovery operation
Forbidden

Silent operation mode
Snow falling protection fan mode

EEV initialization

System type switch 1
System type switch 2
Forbidden

SW 8
SW 9

Base heater validity / invalidity

Forbidden
Forbidden

Forbidden
Defrost temperature setting SW1
Defrost temperature setting SW2
Forbidden
Forbidden

Forbidden
Forbidden

Forbidden
Forbidden
Forbidden
Forbidden
Forbidden

DIP SW

ROTARY SW

Test run(Heating)

Test run(Cooling)

Pump down operation
Forced defrost operation

Refrigerant circuit address switch 1
Refrigerant circuit address switch 2

Forbidden

1

2

3

4

5

6

1

2

3

4

5

6

DIP SW1

DIP SW2

O

N

O

N

Wired & Simple remote controller

SW 1

SW 2

DIP SW

Remote controller switch 1(Terminator)

Indoor unit connection (One / multiple)

Forbidden

Remote controller switch 2(Master / Slave)

Forbidden

Back ground light validity / invalidity

Maintenance switch

Forbidden

Battery backup switch

1
2

3
4

5
6

1
2

3
4

5
6

Forbidden

Cooling / Heat pump

Auto change over validity / invalidity

2-1-4 WIRED REMOTE CONTROLLER,SIMPLE REMOTE CONTROLLER
CIRCUIT BOARD

*

Simple remote
controller only

*

Wired remote
controller only

Wired remote controller

Simple remote controller

DIP SW1 DIP SW2

02-04

DIP SW3

DIP SW2

SWITCH 42

Central remote controller

SW 2

SW 3

1
2

3
4

5
6

7
8

1
2

3
4

Filter sign indication ON / OFF
C / F switch
RC operation prohibit function validity/invalidity

Forbidden
Forbidden

SRAM battery ON / OFF
Forbidden
Forbidden

Forbidden

Forbidden

Initial setting

External input validity / invalidity
External input select edge / pulse

SW 42

DIP-SW

o

o

2-1-5 CENTRAL REMOTE CONTROLLER CIRCUIT BOARD

02-05

2-1-6 NETWORK CONVERTORS' CIRCUIT BOARD

02-06

Network Convertor (UTR-YSSA)

SW 103

DIP SW

SW 107

SW 109

Forbidden

Wired remote controller validity / invalidity
External input validity / invalidity

External input select edge / pulse

Auto changeover validity / invalidity

1
2
3
4

1
2

5
6
7
8
1
2
1
2

Auto restart validity / invalidity

Refrigerant circuit address 1

SWITCH POSITION

(1) NETWORK CONVERTOR (UTR-YSSA)

Remote controller type

Number of connected indoor units

SW 108

* Set to OFF for duct type indoor unit

SW 110
SW 111

ROTARY
SW

Refrigerant circuit address 2

SW111

SW109

SW103

SW107

SW110

SW108

D129

02-07

(Switch)

SWITCH AND LED POSITION

(2) NETWORK CONVERTOR (UTR-YLLA)

Switch No.

SW1
SW2
SW3
SW4
SW5
SW6
SW7

Push switch

Push switch
Push switch
Push switch
Rotaly switch (0-15)
Rotaly switch (0-15)

Push switch

CPU Reset

Selection of setting mode

Contents

(LED)

LED No.

D9
D14
D25-D18
D29-D26

Contents

Type

Service Pin SW (VRF side)

Service Pin SW (Lon works side)

Confirmation of setting
Setting up the value at the each setting mode (D25-D22)

Setting up the value at the each setting mode (D21-D18)

Light up when SW1 is pressed (Neuron ID Transmission)
Light up when SW2 is pressed (Neuron ID Transmission)

Indicates the setting mode selected with SW3

Indicates the setting value specified with SW5 and SW6

SW3

SW4

SW5

SW6

SW7

SW1

SW2

D9

D14

D29,28,27,26(From left)

D25,24,23,22,21,20,19,18(From left)

2-2 MICROPROCESSOR FUNCTION LIST

2-2-1 INDOOR UNIT

02-08

Large

Ceiling

Universal

Compact
Cassette

Thin

Cassette

Large

Cassette

Compact

Duct

Low

Static

Pressure

Duct

High

Static

Pressure

Duct

60,000
54,000
45,000
36,000
30,000
24,000 (25,000)

24 25 25
20,000
18,000
14,000
12,000
9,000
7,000

CN1 AC IN
CN2 TH. FUSE
CN3 FAN CAPA
CN4 FAN MOTOR
CN5 D. PUMP
CN6 S. VALVE
CN10 SP-M (U,D)
CN11 SP-M (R,L)
CN12 HEATER
CN13 DISPLAY
CN14 E.E.VALVE
CN15 FLOAT SW
CN16 MOTOR F. BACK
CN17 REMOCON
CN18 TEST
CN19 R. TH
CN20 P. TH
CN21 S. TH
CN22 EX. OUT1
CN23 EX. OUT2
CN24 EX. OUT3
CN25 FLASH
CN26 COMMUNICATION-PWB
CN27 EX. IN
CN101 NETWORK
CN201 COMMUNICATION
SW1 FUNCTION 1
SW2 FUNCTION 2
SW3 FUNCTION 3
SW4 FUNCTION 4
SW5 FUNCTION 5
SW6

INDOOR UNIT ADDRESS 1

SW7 FORBIDDEN
SW8

REFRIGERANT ADDRESS 1

SW9

REFRIGERANT ADDRESS 2

SW10

REMOTE CONTROLLER ADDRESS

INDOOR UNIT TYPE

CAPACITY

(BTU/h)

02-09

Wall Mounted Ceiling Wall

30,000
24,000
18,000

14,000
CN1 TH. FUSE
CN2 FAN MOTOR
CN3 FAN MOTOR
CN4 D. PUMP
CN5 S. VALVE
CN6 DIFFUSER/SP-M(U,D)
CN7 SP-M(L/R)
CN8 DISPLAY-1
CN9 DISPLAY-2
CN10 F. BACK
CN11 TEST
CN12 E.E.VALVE
CN13 REMOCON
CN14 FLOAT
CN15 NETWORK
CN16 R.-TH
CN17 P-TH
CN18 S-TH
CN19 FLASH
CN20 HEATER
CN21 EX. IN
CN22 EX. OUT1
CN23 EX. OUT2
CN24 EX. OUT3
CN25 COMMUNICATION-PWB
CN26 COMMUNICATION
SW1 FUNCTION 1
SW2 FUNCTION 2
SW3 FUNCTION 3
SW4 FUNCTION 4
SW5 FUNCTION 5
SW6 INDOOR UNIT ADDRESS 1
SW7 FORBIDDEN
SW8 REFRIGERANT ADDRESS 1
SW9 REFRIGERANT ADDRESS 2
SW10 REMOTE CONTROLLER ADDRESS

INDOOR UNIT TYPE

CAPACITY

(BTU/h)

02-10

Compact Wall Mounted

14,000 ○
CAPACITY 12,000 ○
（BTU/h） 9,000 ○

7,000 ○

CN1 POWER-PWB ○
CN2 FAN F. BACK ○
CN3 E. E. VALVE ○
CN4 SP MOTOT(U,D) ○
CN5 DISPLAY ○
CN6 ROOM TH. ○
CN7 PIPE TH. ○
CN8 TEST ○
CN9 FLASH ○
CN10 EX. IN ○
CN11 EX. OUT ○
CN12 COMMUNICATION-PWB ○
CN101 MAIN-PWB ○
CN102 FAN MOTOR ○
CN103 TRANS-P ○
CN104 TRANS-S ○
CN105 TH. FUSE ○
CN106 S. VALVE ○
CN107 NETWORK ○
CN108 COMMUNICATION ○
W101-102 POWER SUPPLY ○
W103-104 FAN CAPACITOR ○
SW1 FUNCTION ○
SW2 FUNCTION & INDOOR UNIT ADDRESS ○
SW3 REFRIGERANT CIRCUIT ADDRESS ○
SW4 INDOOR UNIT ADDRESS ○
SW5 REFRIGERANT CIRCUIT ADDRESS ○
JM1

WIRELESS REMOTE CONTROLLER CUSTOM CODE

○

JM2

WIRELESS REMOTE CONTROLLER CUSTOM CODE

○

INDOOR UNIT TYPE

AO*90MPCMFOUTDOOR UNIT TYPE

CN1

AC IN

CN2

NET

CN3

FAN.1

CN4

FAN.2

CN5

BASE HEATER

CN6

CRANK CASE HEATER
CN7
CN8

S.V.1

CN9

S.V.2

CN10

S.V.3

CN11

S.V.4

CN12

S.V.5

S.V.8

S.V.6

S.V.7

CN13
CN14

CN19
CN20

TERMINATOR

CN22

COMP.1

CN24

COMP.2

CN25

COMP.3

CN26

TH.1

CN27

FLASH W/R M

FLASH W/R S

CN28
CN29

E.E.V.3

E.E.V.1

E.E.V.2

CN30

P.SEN-H

P.SEN-M

CN31

P.SW-H

CN33

TEST

CN34

TH.2

CN35
CN42
CN44

EXT.OUTPUT

CN45
CN48

COMMUNICATION PWB

CN51
SW 1

FUNCTION 1
SW 2

FUNCTION 2
SW 3 FUNCTION 3
SW 4 FUNCTION 4
SW 5 FUNCTION 5
SW 6 FUNCTION 6
SW 7

2-2-2 OUTDOOR UNIT

SW 8

SW 9

REFRIGERANT
ADDRESS 2

REFRIGERANT
ADDRESS 1

CN18

4WV.2

4WV.3

4WV.4

FUNCTION 7

02-09

2-3 FUNCTION AND SETTING OF EACH SWITCH

2-3-1 INDOOR UNIT

02-12

1-2 Room temperature correct coefficient of heating.

Decide the heating temperature correct coefficient value of heating.

2-1 Room temperature correct coefficient of cooling.

Decide the cooling temperature correct coefficient value of cooling.

HEATING TEMPERATURE CORRECTION

Coefficient value

OFF

ON

+ 4 deg

SW1-3

SW1-4

+ 8 deg

OFF

ON OFF

0 deg

OFF

+ 12 degON ON

COOLING TEMPERATURE CORRECTION

Coefficient value

0 deg

SW2-1

ON + 2 deg

OFF

2-2 Dip SW 2-2 setting forbidden

OFF

SW2-2

2-3 Filter check validity / invalidity.

Filter check is set with Dip SW 2-3

FILTER CLEANING FUNCTION

Filter check

Invalidity

SW2-3

ON Validity

OFF

DIP SWITCH SETTING

1. SW1 setting

2. SW2 setting

( Factory setting)

( Factory setting)

( Factory setting)

( Factory setting)

2-4 Auto restart validity / invalidity.

Control the auto restart function by turning this switch ON/OFF.

AUTO RESTART SETTING

Auto restart

Validity

SW2-4

ON

Invalidity

OFF

( Factory setting)

1-1 DIP SW 1-1 and SW 1-2 setting forbidden

OFF

SW1-1

( Factory setting)

OFF

SW1-2

02-13

3-1 Indoor unit fan speed switch

This switch can select fan speed corresponding to each model.

Large ceiling type

OFF

OFF

OFFSW3-1

SW3-2

OFF ON

OFF ON

OFF

OFF ON

OFF

SW3-3

ON

Cassette type

OFF

AB30

AB36 AB45

AB54

SW3-1

SW3-2

SW3-3

AU54

AU45

AU36 AU30

AU25

OFF

OFF

ON

OFF

OFF

OFF

ON

OFF

OFF

OFF

ON

OFF

ON

ON

AU20

ON

ON

ON

3. SW3 setting (Never change at the site)

Wall mounted type

OFF OFFSW3-1

SW3-2

ON

OFF ON

SW3-3

AS18

AS24 AS30

Ceiling wall type

OFF

OFFSW3-1

SW3-2

ON

OFF ONON

OFF

SW3-3

ON

AW14

AW18 AW24

AW30

ON

ON

ONON

ONON

ON

ON

SW3-1

SW3-2

SW3-3

OFF

OFF

OFF

Other model (Default)

3-2 DIP SW 3-4 setting

SW3-4

External input select

OFF

ON

Edge

Pulse

( Factory setting)

This switch is used to select the format of external input command as shown in
the table below.

OFF

OFF

OFF ON

OFF

AW7

AW9 AW12

ON

OFF

OFF

OFF

02-14

Indoor unit model code.
This switch for changing the model code information of indoor unit PCB.

INDOOR UNIT MODEL CODE

SW4-1

SW4-2

Type

SW4-3

60

ON

OFF

ON

ON

54

OFF

OFF

ON

ON

45

ON

OFF

OFF

ON

36

OFF

OFF

OFF

ON

30

ON

ON

ON

OFF

25(24)

OFF

ON

ON

OFF

20

ON

ON

OFF

OFF

18

OFF

ON

OFF

OFF

14

ON

OFF

ON

OFF

12

OFF

OFF

ON

OFF

9

ON

OFF

OFF

OFF

7

OFF

OFF

OFF

OFF

SW4-4

Capacity

5-2 Frost prevention temperature shift switch

4. SW4 setting (Never change at the site)

5. SW5 setting

5-1 Wireless remote controller custom code switch

Decid the custom code and restrict the type of infrared control signal, in order to prevent
mixing of multiple indoor unit signals.

Remote controller custom code switch

OFFOFF

SW5-1

OFFON

Type A

Custom code

ON

ON

ON

SW5-2

Type B

Type C

Type D

( Factory setting)

5-3 Draft prevention setting switch (only for cassette type)

Set the frost prevention temperature for indoor
unit.

Frost prevention temperature shift switch

NormalOFF

SW5-3

HighON

Frost prevention temperature

( Factory setting)

OFF

C

O

O

L

FA

N

H

E

A

T

A

U

T

O

A

U

T

O

H

I

G

H

M

E

D

LO

W

T

I

M

E

R

T

I

M

E

R

R

E

S

E

T

C

L

O

C

K

S

L

E

E

P

E

N

E

R

G

Y

S

A

V

E

C

A

M

P

M

O

N

O

F

F

O

F

F

O

N

H

M

A B C D

A B C D

D

R

Y

ABCD

Remote controller

Remote controller
signal selector
switch

Set the flap angle of cassette type unit.

Draft prevention switch

Normal positionOFF

SW5-4

Draft prevention positionON

flap angle

( Factory setting)

Normal position Draft prevention position

35 - 65

25 - 65

Flap angle Flap angle

*If air conditioning cooling operation is performed in
long time and a humid place, there is a possibility
that waterdrop may hang down from a blow-off mouth.

An air flow direction, by moving the flap angle horizontally,
It can prevent that a cold wind directly hits.

1. Press the MASTER CONTROL button for
more than five seconds to start the code
change.

2. Press the (+) or (-) button to select the
desired code.

3. Press the MASTER CONTROL button again
to end the code change.

A B C D

02-15

ROTARY SWITCH SETTING

EXTERNAL INPUT AND OUTPUT

Indoor unit address switch

Sets the indoor unit addresses.

INDOOR UNIT ADDRESS SWITCH

Refrigerant circuit address switch

Sets the refrigerant circuit.

REFRIGERANT CIRCUIT ADDRESS SWITCH (Factory setting SW 8: 0 SW 9: 0)

Remote controller address switch

REMOTE CONTROLLER ADDRESS SWITCH (Factory setting : 0)

When the indoor unit is wired by remote controller group, to identity the indoor unit in the remote
controller group, the number (remote controller address) in the remote controller group is set.
Set the remote controller address in the 0.1.2,~,15 order (Blank is not allowed)

1.SW6 setting

2.SW7 setting forbidden

Rotary SW7 0

Rotary SW

6

Description Remarks

Indoor unit

address SW

Indoor unit address

( 0~15 )

Rotary SW

8

9

Description Remarks

Refrigerant circuit
address 1
Refrigerant circuit
address 2

Refrigerant circuit

address (the first digit)
Refrigerant circuit
address (the second digit)

Rotary SW

10

Description Remarks

Remote controller
address SW

Remote controller
address

3.SW8,9 setting

4.SW10 setting

(Factory setting : 0)

Connector

CN21

CN27

Input

Output

OPERATION DISPLAY
(DC12V)

Remarks

Indoor unit type

Wall mounted /
Ceiling wall types

CN22

CN23

CN24

Other types

All types

CONTROL INPUT

(OPERATION / STOP)

ERROR DISPLAY
(DC12V)

INDOOR UNIT FAN
STATUS DISPLY(DC12V)

See 2-4-1
for details

1-2 Model code setting switch

The model code infomation corresponding to each model is provided with the switch.

2-1 Dip SW 2-1,2-2 setting forbidden

OFF

SW2-1

2-3 DIP SW 2-4 setting forbidden.

DIP SWITCH SETTING

1. SW1 setting (Never change at the site)

2. SW2 setting

1-1 Fan speed setting switch

( Factory setting)

( Factory setting)

The fan speed corresponding to each model is set with the switch.

OFFSW1-1

SW1-2

OFF

ON ONOFF

ON

OFF ON

AS7

AS9 AS12

AS14

OFFSW1-3

SW1-4

OFF

ON ONOFF

ON

OFF ON

AS7

AS9 AS12

AS14

OFF

SW2-2

2-2 Auto restart validity / invalidity.

The auto restart function be comes validity by changing the switch position from OFF to ON.

AUTO RESTART SETTING

Auto restart

Validity

SW2-3

ON

Invalidity

OFF

( Factory setting)

OFF

SW2-4

2-3-2 INDOOR UNIT ( COMPACT WALL MOUNTED TYPE )

02-16

3-1 Refrigrant circuit address switch

By combined with Rotary SW5 , the refrigerant circuit address (0-99) can be set.
Please see "6-2 ADDRESS SETTING" for refrigerant address conversion table.

OFF

OFF

16 - 31

32 - 47

ON

OFF

OFF

ON

OFF

48 - 63

Remarks

3. SW3 setting

( Factory setting)

SW3-1 SW3-2 SW3-3

Refrigerant

circuit address

0 - 15

64 - 79

80 - 95

96 - 99

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

About Rotary

SW5,

see next page

3-2 DIP SW 3-4 setting forbidden.

( Factory setting)

OFF

SW3-4

02-17

ROTARY SWITCH SETTING

JUMPER WIRE

Indoor unit address switch

Set the indoor unit addresses.

INDOOR UNIT ADDRESS SWITCH

Refrigerant circuit address switch

By combined with DIP switch 3-1,3-2 and 3-3,the refrigerant circuit address(0 - 99)can be set.
Please see "5-3-3 ADDRESS SETTING" for the refrigerant address conversion table.

REFRIGERANT CIRCUIT ADDRESS SWITCH (Factory setting SW 5: 0)

1.SW4 setting

Rotary SW

4

Description Remarks

Indoor unit

address SW

Indoor unit address

( 0~15 )

Rotary SW

5

Description Remarks

Refrigerant circuit
address SW

About DIP switch 3-1,3-2
and 3-3 see previous page

2.SW5 setting

(Factory setting : 0)

Wireless remote controller custom code switch

Limit the type of infrared control signal which the indoor unit is controlled,in order to prevent
misoperation of the unit due to the signal from other wirless remote controller.

Remote controller custom code switch

ConnectConnect

JM 1

ConnectDisconnect

Type A

Custom code

Disconnect

Disconnect

Disconnect

JM 2

Type B

Type C

Type D

( Factory setting)

Connect

C

O

O

L

FA

N

H

E

A

T

A

U

T

O

A

U

T

O

H

I

G

H

M

E

D

L

O

W

T

I

M

E

R

T

I

M

E

R

R

E

S

E

T

C

L

O

C

K

S

L

E

E

P

E

N

E

R

G

Y

S

A

V

E

C

A

M

P

M

O

N

O

F

F

O

F

F

O

N

H

M

A B C D

A B C D

D

R

Y

ABCD

Remote controller

Remote controller
signal selector
switch

1. Press the MASTER CONTROL button for
more than five seconds to start the code
change.

2. Press the (+) or (-) button to select the
desired code.

3. Press the MASTER CONTROL button again
to end the code change.

A B C D

02-18

EXTERNAL INPUT AND OUTPUT

Control Input

CN10

Connector

CN11

See 2-4-2
for details.

Remarks

Operation Display

Input or Output

(Operation / Stop)

(DC12V)