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Si12-796
Removal of PCB
Removal Procedure
15
6
The figure shows the
controller PCB.
[S20]:Electronic expansion
valve coil A port
[S21]:Electronic expansion
valve coil B port
[S22]:Electronic expansion
valve coil C port
[S23]:Electronic expansion
valve coil D port
[S31]:To CN14 (Pin 9)
[S32]:To CN11 (Pin 5)
[S33]:To S34 (Pin 10)
[S40]:Overload relay
[S71]:To S72 (Pin 8)
[S80]:Four way valve coil
[S90]:Thermistor (Outdoor air,
heat exchanger, and
discharge pipe)
[S92]:Gas pipe thermistor
[S93]:Liquid pipe thermistor
2. Remove the service
monitor PCB.
1
Remove the service
monitor PCB by
releasing its tab.
3. Remove the inverter PCB.
1
Remove the 9 screws
of the inverter PCB.
Step
Procedure
Points
[S93]
[S80]
[S23]
[S22]
[S21]
[S20]
[S40]
[S31]
[S71]
[S33]
[S32]
[S92]
[S90]
Rectifier
stack
(R2249)
Service monitor
LED A
LED 1
LED 2
LED 3
LED 4
Tab
Priority-room setting (SW4)
Wiring error check (SW3)
Forced operation (SW1)
Night quiet mode (SW5)
Cooling / heating mode lock
(SW2)
(R3062)
Fuse cover
Glass tube fuse (3A)
(R2250)