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88
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Parts layout on the indoor unit PCB
Model: FDTC series
Input signal - Reverse invalid
Input signal - Run stop
Heating thermostat OFF-Lo
Heating thermostat OFF-Stop, Lo
Normal operation operable
Operation permission prohibited
Normal
Heating temp. +3
Louver free stop control - Invalid
Louver free stop control - Effective
Freeze prevention fan control activated.
Freeze prevention fan control deactivated.
Louver position : Normal
Louver position : For wind 1
J1 (SW7-1)
J2 (SW7-2)
J3 (SW7-3)
J4 (SW7-4)
J5 (SW8-1)
J6 (SW8-2)
J7 (SW8-3)
With
None
(1)
With
None
(1)
With
None
(1)
With
None
(1)
With
None
(1)
With
None
(1)
With
None
(1)
Name
Function
Note (1)
(2)
“None” means that jumper wire is not provided on the PCB or the
connection is cut
The replacement board is not equipped with jumpers J1 ~ J7. Instead,
SW7 and 8, with the same functions as jumpers J1~J7, are used in the
position where the jumpers were previously. Set SW7 and 8 locally in
accordance with the above table.
Note (1) It is normally ON only in the case of SW9-4.
Setting time : 1000hrs. (Unit stop)
Setting time : 1000hrs. (Display)
Setting time : 600hrs. (Display)
Setting time : 180hrs. (when shipped from factory)
SW5-4
SW5-3
ON
OFF
ON
OFF
ON
OFF
Switch
Function
Emergency operation
Normal
Fan control : Powerful mode
Fan control : Mild mode
SW9-3
SW9-4
SW10-1 (J9)
Switch
Function
Auto swing function - None
Auto swing function - With
Remote controller air flow –
Remote controller air flow 1 speed
Remote controller air flow 2 speed
Remote controller air flow 3 speed
SW10-3
(J11)
SW10-2
(J10)
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
Switch
Function
Slave c
Slave b
Slave a
Master
SW5-2
SW5-1
ON
OFF
ON
OFF
ON
OFF
●
Control change switch (SW5, SW9, SW10)
Function of DIP switch SW5 (Usually all turned OFF)
Function of DIP switch SW9
●
Change by the jumper wire
Function of DIP switch SW10 (Usually all turned ON)
CNI
CNQ
LED2
LED1
CNT
CNV
CNJ
CNR
CNW0
CNW1
CNM1CNM1
CNM2
CNW2
CNH
CNN1
CNZ
CNB
SW5
SW2
SW9
SW10
SW7
SW8
PCB power supply
connector
(Primary side)
Power supply
Fan motor
Fan motor
Drain motor
Louver motor
Connector
Heat exchanger
thermistor,Return
air thermistor
(ThI-R1,ThI-A)
Heat exchanger
thermistor
Float switch
DPI switch
Remote controller
(ThI-R2)
(SW9)
J5,J6
(SW8)
J1~J4
(SW7)
DPI switch
(SW5)
DPI switch
(SW10)
(CNT)
PCB power supply
connector
(Secondary side)
