Adjustment of air flow direction rightwards/ leftwards
To change the discharge direction to right or left side, set the vertical grille inside of the air outlet flap to the desired direction.
To set up the air flow direction individually, push UNIT the button to display each indoor unit No. in a group control. You can then set the air flow direction for the displayed indoor unit. If there is no display, all the indoor units can be operated collectively. UNIT For every push of the button, the display will alter between units as shown in the figure.
No display Unit No. 1-1 Unit No. 1-2
Setup the air flow direction and swinging function
Refer to the description of the 2-way Air Discharge Cassette Type.
Unit No. 1-4 Unit No. 1-3
Right/Left air direction adjustment
To change the air outlet direction to the right or left side, set the vertical flap located behind the horizontal flap to the desired direction.
If cooling operation is performed with a downwards discharge, dew may form on surface of the cabinet or the horizontal flap resulting in possible dripping. If heating operation is performed with a horizontal discharge, the room temperature may not be equal i.e. there may be a large variance between one side of the room with the other.
In cooling operation, set the air outlet flap with a horizontal set point so that the cold air diffuses the whole room.
In heating operation, set the air outlet flap with a downwards set point so that the hot air blows towards the floor.
In cooling operation, use the horizontal flap with a horizontal set point so that the cold air diffuses the whole room.
How to change the air outlet port
Change the air outlet port using the following procedure.
Remove the two fixing screws on the air outlet port. (The fixing screws are reused.)
In heating operation, use the horizontal flap with a downwards set point so that the hot air blows towards the floor.
Remove the discharge port, by pushing up on the rear side, to a point where you can remove it from the rear clip.
If cooling operation is performed with the louver set at a downwards position, dew may form on the surface of the cabinet or the horizontal flap resulting in possible dripping. If heating operation is performed with the louver set in a horizontal position, the room temperature may not be equal i.e. there may be a large variance between one side of the room with the other. Do not move the horizontal flap directly with your hands; otherwise a fault/error may be caused. Select the direction of the SWING/FIX button on the remote controller. horizontal flap using the The horizontal flap will not stop immediately even if the switch is pushed. Note) Pushing the switch again when the required louver direction has been reached will stop the louver.

(When selecting the DN code to 33, change the temperature indication of the unit from C to F on the remote controller.) Push SET button. (OK if display goes on.) To change the selected indoor unit, return to procedure. To change the item to be set up, return to procedure.

Pushing

button returns the status to normal stop status.
Table: Function selecting item code (DN) (Items necessary to perform the applied control at the local site are described.)
DN 01 Item Filter display delay timer Dirty state of filter Central control address Specific indoor unit priority Heating temp shift Description 0000 : None 0001 : 150H 0002 : 2500H 0003 : 5000H 0004 : 10000H 0000 : Standard 0001 : High degree of dirt (Half of standard time) 0001 : No.1 unit to 0064 : No.64 unit 0099 : Unfixed 0000 : No priority 0001 : Priority 0000 : No shift 0002 : +2C : +1C 0010 : +10C (Up to +6 recommended) At shipment According to type
0000 : Standard 0099 : Unfixed 0000 : No priority 0002 : +2C (Floor type 0000: 0C) 0001 : Not provided 0000 : Not provided

0F 14 19

Existence of [AUTO] mode Follows operation mode of the header unit Cooling only Type Indoor unit capacity Line address Indoor unit address Group address Louver type (Adjustment of air direction) Temp difference of [AUTO] mode selection COOL HEAT, HEAT COOL Automatic restart of power failure Operation condition of humidifier Selection of option/ error input (CN70) HA terminal (CN61) select Automatic elevating grille Ventilating fan control TA sensor selection Temperature unit select Drain pump control
: Provided : Not provided (Automatic selection from connected outdoor unit) : Does not follow : Follows : Heat pump : Cooling only (No display of [AUTO] [HEAT]) : (1-way air discharge cassette) : (4-way air discharge cassette) to 0037 : Unfixed 0001 to 0034 : No.1 unit to 0030 : No.30 unit : No.1 unit to 0064 : No.64 unit : Individual 0001 : Header unit of group : Follower unit of group : Not provided 0001 : Swing only : [4-way Air Discharge Cassette type] and [Under Ceiling type]
0000 : Heat pump According to model type According to capacity type 0099 : Unfixed 0099 : Unfixed 0099 : Unfixed According to type
0000 : 0 deg to 0010 : 10 deg (For setup temperature, reversal of COOL/HEAT by (Data value)/2)

0003 : 3 deg (Ts1.5)

2A 2E 40 5d

0000 : None

0001 : Restart
0000 : None 0000 : Usual 0002 : None 0000 : Usual (HA terminal) 0000 : Unavailable 0000 : Unavailable 0000 : Body TA sensor 0000 : C 0003 : Pump OFF 0000 : Standard

Set up data

0000 : Usual 0001 : Condition ignored (Detection control for heat exchanger temperature) 0000 : Filter input 0001 : Alarm input (Air washer, etc.) 0002 : None 0000 : Usual 0001 : Leaving-ON prevention control 0000 : Unavailable 0000 : Unavailable 0001 : Available 0001 : Available 0001 : Remote controller sensor

3 2, 4

D600 D601 D602 D603 D604 SW01 SW02 SW03
U1 U2 For internal wiring between indoor and outdoor U3 U4 For wiring of central control system
U1 U2 U3 U4 For internal wiring between For wiring of central control indoor and system outdoor
8. When address setup has finished in all the sysem, turn off SW30-2 on the interfase P boards of the lines connected to.C. the identical central control except a line with least line address number. (Terminator resistors of the wires in the central control line of indoor/outdoor are unified.) 9. Connect the relay connector between [U1U2] and [U3U4] terminals of the outdoor unit for each refrigerant line. 10. Then set up the central control address. (For the central control address setup, refer to the Installation manual of the central control devices.)

ON 1 2

Manual address setup from remote controller
In case to decide an address of the indoor unit prior to finish of indoor wiring work and unpracticed outdoor wiring work (Manual setup from remote controller)
Arrange one indoor unit and one remote controller set to 1 by 1. Turn on the power.
Push simultaneously SET + for 4 seconds or more. LCD changes to flashing. (Line address)

buttons

(Wiring example in 2 lines)

#1 Outdoor #2 Outdoor

Using the setup temp. set to the item code.

buttons,

U3 U4 U3 U4
Indoor Indoor Indoor Indoor Indoor
Using the timer time / buttons, set up the line address. (Match it with the line address on the interface P board of the outdoor unit in the identical.C. refrigerant line.)

U1 U2 Relay connector

U5 U6 Relay connector
Before address setup During setup of address

U1 U2 A B U1 U2 A B

Line address Indoor address Group address
Push SET button. (OK when display goes on.) (Indoor address)

Follower

Header
Using the setup temp. set ! to the item code. Using the timer time the indoor address. /

buttons, buttons, set up

Individual Outdoor unit

SW2 ON OFF

Group Outdoor unit

SW2 ON OFF SW30

ON OFF
In the above example, under condition of no inter-unit wire of the remote controller, set the address after individual connecting of the wired remote controller.
U1 U2 Relay connector U1 U2
U1 U2 Relay connector U1 U2 A B U1 U2

S003 Bit 1 : OFF

When the test operation has finished, push button to stop the operation.
Turn off the power to the air conditioner. Sensor cover Change Bit [1] of the switch [S003] on the sensor P board from ON to OFF.C. Adjust corner cap Attach the adjust corner cap with sensors to the ceiling panel.

Sensor P.C. board

Test operation from outdoor unit
Refer to 8-7-2. Function of Start/Stop the Indoor Unit from Outdoor Unit in 8-7. Service Support Function. NOTE) The test operation returns to normal operation after 60 minutes have passed.
In case of wireless remote controller (for Under Ceiling type and 1-way Air Discharge Cassette type (2 Series))
Procedure Turn on power of the air conditioner. Description
The operation is not accepted for 5 minutes when power has been turned on at first time after installation, and 1 minute when power has been turned on at the next time and after. After the specified time has passed, perform a test operation. Push [Start/Stop] button and change the operation mode to [COOL] or [HEAT] with [Mode] button. Then change the fan speed to [High] using [Fan] button. Test cooling operation Set temperature to [18C] using [Temperature set] button. After checking the receiving sound Pi, immediately push [Temperature set] button to set to [19C] After checking the receiving sound Pi, immediately push [Temperature set] button to set to [18C]. Then repeat the procedure Test heating operation Set temperature to [30C] using [Temperature set] button. After checking the receiving sound Pi, immediately push [Temperature set] button to set to [29C]. After checking the receiving sound Pi, immediately push [Temperature set] button to set to [30C].

4545. 2 and after.

After approx. 10 seconds, all the display lamps on the sensor part of wireless remote controller, [Operation] (Green), [Timer] (Green), and [Ready] (Yellow) flash and the air conditioner starts operation. If the lamps do not flash, repeat the procedure
After the test operation, push [Start/Stop] button to stop the operation.
Outline of test operation from the wireless remote controller
Test cooling operation: Start 18C 19C 18C 19C 18C 19C 18C (Test operation) Stop Test heating operation: Start 30C 29C 30C 29C 30C 29C 30C (Test operation) Stop
Be sure to set the air speed to [High]

3, 4, 5, 6 2, 7

2. Test operation

This compressor is driven with 4-pole motor. The value of the compressor frequency (Hz) measured by a clamp meter is two times the rotation count (rps) of the compressor. This data is the cycle data under condition of standard pipe length and two 4-way Air Discharge Cassette type air conditioners connected. Data changes according to installed pipe length, combination of indoor units or connected indoor capacity. For a compressor, the left side is 1 and the right side is 2 viewed front the front of the unit. Even if two compressors operate, the frequency difference may set as a measures against resonance. The temperature of indoor heat exchanger (TC) indicates TCJ sensor temperature in cooling time, and TC2 sensor temperature in heating time respectively.
2. Criteria for operating pressure General criteria is as follows:
High pressure : 2.0 to 3.2MPa All cooling operaton Low pressure : 0.5 to 0.9MPa High pressure : 2.5 to 3.3MPa All heating operation Low pressure : 0.5 to 0.7MPa Indoor :18 to 32C When all the units operate in cooling mode
Outdoor :25 to 35C Indoor :15 to 25C

Outdoor : 5 to 10C

When all the units operate in heating mode
Using the rotary switch on the outdoor unit I/F, the operating pressure, cycle temperature, and compressor rotation count can be checked on the 7-segment display. Refer to Outdoor refrigerant circuit system data display and Indoor cycle data display in Section 9. Troubleshooting.
9-7. Service Support Function
9-7-1. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit
The following functions enables the start and stop of the indoor units using the switches on the interface P.C. board of the header unit.
No. 1 Function Cooling test operation Outline Changes the mode of all the connected indoor units collectively to cooling test operation. Note) Control operation same as test operation for remote controller. Changes the mode of all the connected indoor units collectively to heating test operation. Note) Control operation same as test operation for remote controller. Starts all the connected indoor units collectively. Note) The contents follow the setup of remote controller. Stops all the connected indoor units collectively. Setup/Release [Setup] Push SW04 for 2 seconds or more with SW012, SW025, SW031. [Release] Return SW01, SW02, SW03 to 1. [Setup] Push SW04 for 2 seconds or more with SW012, SW026, SW031. [Release] Return SW01, SW02, SW03 to 1. [Setup] Push SW04 for 2 seconds or more with SW012, SW027, SW031. [Release] Return SW01, SW02, SW03 to 1. [Setup] Push SW05 for 2 seconds or more with SW012, SW027, SW031. [Release] Return SW01, SW02, SW03 to 1. [Setup] Push SW04 for 2 seconds or more set SWand set SW02 and SW03 to address No. (1 to 64) to be started. [Release] Return SW01, SW02, SW03 to 1. 7-segment display Section A [C ] Section B [ C]

Operation

[Open fully]
Set the switch SW01 on the interface P board of the outdoor unit to [2], SW02 to [3], SW03 to [1] and push.C. SW04 for 2 seconds or more. (Display shown on 7-segment display for 2 minutes as follows.) [P ] [ FF]

[Close fully]

Set the switch on the interface P board of the outdoor unit SW01 to [2], SW02 to [3], SW03 to [1] and push.C. SW05 for 2 seconds or more. (Display shown on 7-segment display for one minute as follows.) [P ] [ 00]

[Clear]

After 2 minutes (1 minutes for Close fully) have passed when setup has finished, the PMV automatically returns to the normal operation.
9-7-5. Pulse Motor Valve (PMV) Forced Open Fully/Close fully Function in Outdoor Unit
This function is provided to fully open or close fully the PMV used in the outdoor unit for 2 minutes.
Short-circuit CN30 on the interface P board of the outdoor unit.C.
Short-circuit CN31 on the interface P board of the outdoor unit.C.
After 2 minutes, the opening returns to the normal operation. Be sure to remove the short circuit after confirmation.

I/F P.C. board

Check connector CN30

Check connector CN31

9-7-6. Solenoid Valve Forced Open/Close Function in Outdoor Unit
This function is provided to forcibly open/close each solenoid valve mounted in the outdoor unit by use of the switches provided on the outdoor unit interface P board. This function confirms the operation of each solenoid.C. valve.

[Operation]

1. On the interface P board set SW01 to [2], SW02 to [1] and SW03 to [3].C. 2. Confirm [H, ] is displayed on the 7-segment display [B]. Push switch SW04 for 2 seconds or more. 3. Confirm [2] is displayed on the 7-segment display - this indicates that solenoid SV2 has been switched on. 4. Each solenoid can be operated by selecting the appropriate SW02 position as shown in the table below. (ON/OFF output pattern of each solenoid valve is as below.) NOTE 1) Be aware that there is a 5 second delay in the operation of the selected solenoid valve after SW02 has been set. NOTE 2) The mark [] in the table indicates the selected solenoid valve is forced on. NOTE 3) The mark [] in the table indicates the selected solenoid mode will depend on the specifications of the air conditioner. NOTE 4) The mark [ ] in the table indicates the selected solenoid valve has been turned off. NOTE 5) The case heater relay output operates both compressor and accumulator heaters.

SW01 SW02 SW03 7-segment display [B] TO sensor value [ [ [ [ ] ] ] ] 30C 35C 40C 43C [ [ [ [ ] ] ] ] 10C 15C 20C 25C 16 SW01 SW02 SW03 7-segment display [B] TO sensor value 15 [ [ [ [ ] ] ] ] 0C 2C 5C 7C [ [ [ 10 ] ] ] ] 45C 15C 10C 5C
NOTE) Emergent operation should be restricted to one day or so on. If operating TO sensor fixed with this function, the system control operation of the air conditioner may not become one based upon the specification of the product. Therefore an emergent operation should be restricted to a day or so on.
Return numbers of SW01, SW02, and SW03 on the interface P board in the outdoor unit to [1/1/1] each.C.
Service support function list
SW01 SW02 SW03 7-segment display [A] [ [ [ [ C H C E H r ] ] ] ] Cooling test operation function Heating test operation function Indoor collective start/stop (ON/OFF) function Error clear function [ [ [ [ J J P A 1 C H ] ] ] ] Function contents Refrigerant circuit and control communication line check function (Cooling operation) Refrigerant circuit and control communication line check function (Heating operation) Indoor PMV forced full open function Indoor remote controller discriminating function

1 to to 5 15

Solenoid valve forced open/close function Fan forced operation function Outside temp sensor manual adjustment function

1 to 9

[ ] to [ ]

Indoor No. 1 to 9 unit

Indoor individual start/stop (ON/OFF) function
9-7-9. Indoor Fan Operation Check Function
This function is provided to check operation of single indoor unit without using communication with the remote controller or outdoor unit. This function can be used regardless operating or stopping of the system. However, if this function is used for a long time, a trouble of the air conditioner may be caused. Therefore using of this function should be restricted to several minutes.
1. Short-circuit CHK pin (CN71 on the indoor P board).C. If short-circuiting DISP pin (CN72 on the indoor P board) while short-circuiting CHK pin (CN71 on the.C. indoor P board), the indoor PMV only becomes the minimum opening (30 pulse). When opening DISP pin,.C. it becomes the maximum opening again.

Is it grounded? NO

Compressor error Replace
Correct connection of connectors.
Is there a winding short? (Is winding resistance 0.6 to 1.2 W?) NO
Check connection of A, B terminal. Correct communication line of remote controller.
YES Is the winding open circuit? NO Check IPDU P.C. board. Failure Replace
YES Is there no connection error on the power line? NO Is not main power supply turned on? NO Did a block-out occur? NO YES Clear check code. YES Turn on the main power supply. YES Correct power line.
Check code Check code name Cause of operation Other indoor unit in the group has a error.

[P31] / [47]

Other indoor error (Group follower unit error)
Is the network address changed by the main remote controller? NO
When the header unit of the group detects [E03, L03, L07, L08 error], the follower unit(s) in the group display [P31] error and stop. There are no check code displays or alarm record on the main remote controller.
YES Is there any noise etc.? NO Can other indoor units be controlled from AI-NET central remote controller, or is the operation status of indoor unit the same? YES Does the network adaptor P.C. board LED (D01) turn on? YES YES NO Can the NO indoor unit be controlled from the main remote controller?

Eliminate noise, etc.

Unavailable (Others are same.)
Check central controller. Failure Replace
Check power transformer of the network adaptor P.C. board (MCC-1401). Failure Replace
10-6. 7-Segment Display Function
n 7-segment display on the outdoor unit (Interface P.C. board)
On the interface control P board, a 7-segment LED is provided to check the operating status.C. The displayed contents are changed by combining the setup numbers of the rotary switches (SW01, SW02 and SW03) on the I/F P board.C.

Interface P board.C.

SW06 SW07 SW08 SW09

7-segment display A

7-segment display B

CN30 CN31

CN30 CN31 SW05 SW15 D600 CN32 SW04 D601 D602 D603 D604

CN32 SW04 D601 D602 D603

2nd. place

1st. place

3rd. place
Display A SW01 SW02 SW03 Display B
u Check procedure when the system has stopped due to an trouble When the system has stopped due to an trouble in the outdoor unit, execute the following check procedure.
1. Open the panels of the outdoor unit, and then check the 7-segment display. The check code is shown on the right side of 7-segment display B. [U1] [] ([]: Check code) Rotary switch setup for confirming the check code: SW01 [1], SW02 [1], SW03 [1]. However the check code [OOO] is displayed for 3 seconds and the sub-code [OOO] for 1 second are alternately displayed if a sub-code is provided. 2. Confirm the check code, and then follow the check procedure detailed for the diagnosis of the fault. 3. [U1] [E28] on the 7-segment display means an error on the follower unit. change. Push and hold switch SW04 on the header unit for 2 seconds or more. Only the fan of the outdoor unit with a fault will operate. Open the panel of the corresponding unit, and then confirm the ceck code shown on the 7-segment display. 4. Perform the check procedure based on each check code diagnosis.

How to read the check display 7-segment display
1. Data display of system information
SW01 SW02 SWRefrigerant name Display contents Displays refrigerant name. Model with refrigerant R410A Model with refrigerant R407C 2 System capacity A B 3 Total capacity of indoot units A B 4 No. of connected indoor units/ No. of units with cooling thermo ON No. of connected indoor units/ No. of units with heating thermo ON Compressor command correction amount Release control A B A B A B A B 8 A B 9 A B Normal time : [ r], During release control: [r1] [ 0] to [10] : 0 to 10 units (No. of connected units) [ 4] to [ 6] [HP] [ i. . ] : 4 to 6HP A r4 r4 B 10A 07C
[C0] to [C10] : 0 to 10 units (No. of units with cooling thermo ON) [ 0] to [10] : 0 to 10 units (No. of connected units)
[H0] to [H10] : 0 to 10 units (No. of units with heating thermo ON) Data is displayed with hexadecimal notation
Refrigerant/oil recovery operation
During sending of cooling refrigerant oil recovery signal : [C1]. Normal time : [C ] During sending of heating refrigerant oil recovery signal : [H1]. Normal time : [H ] [Ad] Automatic addressing : [FF], Normal time : [ ] [dU] Normal time : [ ]. In 50% to 90% : [ 50 to 90] When controlling by communication line input : [E50 to E90] A. c. H. C. n. U.1.0.. B. 1..1.

Automatic address

Demand operation
Optional control (P.C. board input)
Displays optioned control status Operation mode selection : In heating with priority (Normal) Priority on cooling Heating only Cooling only Priority on No. of operating indoor units Priority on specific indoor unit External master ON/OFF control Start input Stop input Night operation (Sound reduction) : Normal Operation input Snow fan operation : Normal Operation input
Option control (BUS line input) Unused A B

Same as above

mark: Indicates none on display 145
2. Data display of outdoor unit information
SW01 SW02 SWError data A B Display contents Displays outdoor unit number: [U1] to [U4] Displays check code (Latest code only is displayed.) There is no check code: [ ] There is sub-code: Check code [ ] for 3 seconds, sub-code [ ] for 1 second alternately
<SW04> push function : Fan of unit with error only drives. 7-segment A: [E1] <SW04 + SW05> push function : Fan of normal unit only drives. 7-segment A: [E0] <SW05> push function : Interruption of fan operation function 2 A B 3 Operation mode A B 4 Outdoor unit HP A B 5 Compressor operation command A B 4HP: [ 4], 5HP: [ 5], 6HP: [ 6] [HP] Compressor operation command is displayed. Data display with Hexadecimal notation: [00 to FF] [ ] : Inverter frequency is exchanged to decimal notation. : [ ] [ H] (Normal display by pushing <SW05>) Stop: [ ] Normal cooling: [ C], Normal heating: [ H], Normal defrost: [ J]

Ps Ps VOLT (MPa) (kg/cm) 3.98 1.14 11.6 4.00 1.15 11.7 4.02 1.15 11.7 4.04 1.16 11.8 4.06 1.17 11.9 4.08 1.17 11.9 4.10 1.18 12.0 4.12 1.18 12.1 4.14 1.19 12.1 4.16 1.20 12.2 4.18 1.20 12.3 4.20 1.21 12.3 4.22 1.22 12.4 4.24 1.22 12.5 4.26 1.23 12.5 4.28 1.24 12.6 4.30 1.24 12.7 4.32 1.25 12.7 4.34 1.25 12.8 4.36 1.26 12.9 4.38 1.27 12.9 4.40 1.27 13.0 4.41 1.28 13.0 4.43 1.29 13.1 4.45 1.29 13.2 4.47 1.30 13.2 4.49 1.31 13.3 4.51 1.31 13.4 4.53 1.32 13.4 4.55 1.32 13.5 4.57 1.33 13.6 4.59 1.34 13.6 4.61 1.34 13.7 4.63 1.35 13.8 4.65 1.36 13.8 4.67 1.36 13.9 4.69 1.37 14.0 4.71 1.38 14.0 4.73 1.38 14.1 4.75 1.39 14.2 4.77 1.39 14.2 4.79 1.40 14.3 4.81 1.41 14.3 4.82 1.41 14.4 4.84 1.42 14.5 4.86 1.43 14.5 4.88 1.43 14.6 4.90 1.44 14.7 4.92 1.45 14.7 4.94 1.45 14.8 4.96 1.46 14.9 4.98 1.47 14.9
1. Connection of wired remote controller
4-way Air Discharge Cassette Type, Compact 4-way Air Discharge Cassette Type, Concealed Duct Standard Type, Under Ceiling Type, High Wall Type (1 Series), 1-way Air Discharge Cassette Type (2 Series), Slim Duct Type
11-1-1. Indoor Controller Block Diagram

11-1. Indoor Unit

11. CONFIGURATION OF CONTROL CIRCUIT
Wired remote controller (Up to 2 units)
Display LCD Display LED CPU Function setup Key switch

CN2 CN1

Display LCD LCD driver Function setup Key switch
Remote controller communication circuit

Power circuit

Secondary battery
Indoor unit #1 Network adaptor (Option)
Network Remote adaptor controller P.C. board communication (MCC-1401) circuit Indoor control P.C. board (MCC-1402)
Max. 8 units are connectable. *1
Remote controller communication circuit EEPROM
Central control X remote controller (Option) Y

(In case of AI-NETWORK)

AI-NET communication circuit

CPU H8/3687 Switch setup

DC20V DC12V DC5V
TA sensor CPU H8/3039 TCI sensor TC2 sensor TCJ sensor
*1 However in a case that the network adaptor is installed when 2 remote controllers are connected, maximum 7 units are connectable. Same as left Same as left *2 The network adaptor is installed to only one unit. *3 The weekly timer cannot be connected to the simple wired remote controller. *4 Nome for high wall spearate sold parts for under ceiling.
Power circuit Transformer

Driver

Float input HA CPU TMP88CH 47FG (TMP88PH 47FG) Outside output Start Alarm Ready Thermostat ON COOL HEAT FAN AC BUS synchronous communication signal input circuit circuit U1 U2 L N L N U1 U2
Louver motor None for Concealed Duct type

Drain pump

Indoor fan motor DC280V

Fan motor control circuit
Power supply L N U1 U1 U2 U2 Indoor/Outdoor communication Outdoor unit
Power supply Outdoor unit
Outdoor unit Power supply 1220-240V, 50Hz 1220V, 60Hz
2-way Air Discharge Cassette Type, 1-way Air Discharge Cassette Type (1 Series), Concealed Duct High Static Pressure Type, Floor Standing Cabinet Type, Floor Standing Concealed Type, Floor Standing Type
Network Remote adaptor controller P.C. board communication (MCC-1401) circuit Indoor control P.C. board (MCC-1403)

DC20V DC12V

*1 However in a case that the network adaptor is installed when 2 remote controllers are connected, maximum 7 units are connectable. *2 The network adaptor is installed to only one unit. Same as left Same as left
TA sensor CPU H8/3039 TCI sensor

TC2 sensor TCJ sensor

*3 The weekly timer cannot be connected to the simple wired remote controller. *4 Nome for concealed duct, Floor standing cabinet Floor standing concealed *5 Nome for concealed duct, Floor standing cabinet Floor standing concealed Floor standing

PMV Louver motor

Float input

None for Concealed Duct

Indoor fan motor
Outside output Start Alarm Ready Thermostat ON COOL HEAT FAN
HA AC BUS synchronous communication signal input circuit circuit U1 U2 L N L N U1 U2
*6 Nome for 1-way discharge cassette YH type.
Transformer L N U1 U1 U2 U2 Indoor/Outdoor communication
4-way Air Discharge Cassette Type, Compact 4-way Air Discharge Cassette Type , Concealed Duct Standard Type, Under Ceiling Type, High Wall Type (1 Series), 1-way Air Discharge Cassette Type (2 Series), Slim Duct Type
2. Connection of wireless remote controller kit
B Wireless remote controller kit Sensor P.C. board
EEPROM Power circuit TA sensor
Emergent operation SW Function setup SW

CPU H8/3039

TCI sensor TC2 sensor TCJ sensor *3 Float input

Buzzer

Sensor circuit

Display LED

Same as left
HA CPU TMP88CH 47FG (TMP88PH 47FG) Outside output Start Alarm Ready Thermostat ON COOL HEAT FAN AC BUS synchronous communication signal input circuit circuit U1 U2 L N L N U1 U2

*3 Drain

Max. 8 units are connectable. *1 *1 However in a case that the network adaptor is installed when 2 wireless remote controller kits are connected, maximum 7 units are connectable. *2 The network adaptor is installed to only *3 Nome for high wall spearate sold parts for under ceiling. one unit.

Outlet cabinet Piping panel (Rear) Front cabinet

Piping panel (Front)

<Assembling> Assembling by contrary procedure of above 7) 1).

Reactor box

Outlet cabinet
Part name Inverter assembly

Screw Screw

<Disassembling> 1) Stop the unit operation and turn off the power supply to the unit. WARNING
Never open the cabinet while five minutes after turn off the power supply. 2) Remove front and upper cabinet. (Screw 9 pcs) 3) Remove power supply and remote controller wires. (Screw of terminal block) 4) Remove wires to I/F P board.C. (Solenoid valve coil, 4-way valve coil, heater, comp thermo, PMV coil, sensor) 5) Open I/F P board on the slant.C. (Screw 2 pcs and supporter) 6) Remove the reactor wires. (Screw of terminal block, wire clamp and bundle band) 7) Remove wires of sensors and PMV coil. (Wire clamp and bundle band) 8) Remove fan motors lead wires. (Two points) 9) Remove IPDU wires. (Compressor lead wires and high pressure SW wires)

Wire clamp

I/F P.C. board Suppor Supporter

PMV coil

Pressure sensor

Sensor

Solenoid valve coil
Heater 4-way valve coil Comp thermo.
Clamp (down) an Fan motor (down) connector High pressure SW connector Fan motor (up) connector Wire clamp Wire clamp Screw of terminal block
Compressor lead U : CN09 Red V : CN10 White Blac W : CN11 Black
Part name Inverter assembly (Continued)
Procedure 10) Remove reactor assembly. (Screw 5 pcs)
Take care ! Too much heavy (9 kg)
11) Close I/F P board. (Supporter).C. 12) Remove the fix screw of box. (Screw 4 pcs) 13) Lift upper side and remove from partition board. (Hanged on partition board)
<Assembling> Assembling by contrary procedure of above 13) 1).
How to remove electric parts box 1. I/F P board.C.
PMV coil Pressure sensor Sensor
1) Stop the unit operation and turn off the power supply to the unit.
Never open the cabinet while five minutes after turn off the power supply.

7. When noting has finished, push TEST button to return to the normal stop status. (Corresponds to number of the operation diagram of the remote controller.) (It requires approx. 1 minute to operate the remote controller.)
Type Indoor unit capacity Line address Indoor address Group address
Type and capacity of the indoor unit are necessary to set up the revolution frequency of the fan.
<Remote controller operation diagram>

SET DATA

Procedure 2 : Exchange of P.C. board for service
1. Exchange P board with a P board for service.C.C. In this time, the jumper line (cut) setup or the (short-circuit) connecting connector setup on the previous P.C. board should be reflected on P board for service. (See the below figures.).C.

(MCC-1402)

(MCC-1403)
CN34 From the left CN112,111,110 When short-circuited plug is mounted to P.C. board before change, re-mount the short-circuited plug as previous.
2. It is necessary to set Indoor unit to be exchanged : Remote controller = 1 : 1 Based upon the system configuration, turn on power of the indoor unit with one of the following items. 1) Single (Individual) operation Turn on power of the indoor units and proceed to Procedure 3. 2) Group operation A) In case that power of the exchanged indoor unit only can be turned on Turn on power of the exchanged indoor unit only and proceed to Procedure 3. B) In case that power of the indoor units cannot be turned on individually (Case 1) a) Remove temporarily the group wire connected to the terminal blocks A and B of the exchanged indoor unit. b) After connecting the remote controller wire only to the removed terminal block, turn on power of the indoor units and proceed to Procedure 3. When the above methods cannot be used, follow to the two cases below. C) In case that power of the indoor units cannot be turned on individually (Case 2) a) Remove all CN41 connectors of the indoor units in the same group except those of the exchanged indoor unit. b) Turn on power of the indoor units and proceed to Procedure 3. After Procedure 3 operation has finished, be sure to return the temporarily removed group wire or CN41 connector to the original connection.
Indoor unit Indoor unit P.C. board P.C. board Indoor unit Service P.C. board of the unit to be changed

(Case 1)

A B A B A B

Group wire