Daikin 4MKD90BVM Service Manual page 17

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