Daikin Sky Air FAA71BUV1B Service Manual page 59

To remove the indoor unit main PCB
To install the indoor unit main PCB
FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 – 2022.02
1 Correct the wiring from the indoor unit power supply terminal to the PCB, see
"7.2 Wiring diagram" [
Is the problem solved?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
2 Cut the tie straps that fix the ground wire and power supply wiring.
b
c
a
a
a Tie strap
b Ferrite core
c Ground wire on power supply wiring terminal
d Indoor unit main PCB
3 Remove the ferrite core from the ground wire.
4 Disconnect the ground wire from the power supply wiring terminal.
5 Disconnect all connectors from the infoor unit main PCB.
6 Carefully pull the PCB at the side and unlatch the PCB holders one by one.
7 Remove the indoor unit main PCB from the indoor unit.
8 To install the indoor unit main PCB, see
1 Install the indoor unit main PCB in the correct location. Firmly latch the PCB
holders to fix the PCB.
4
93].
Action
No further actions required.
Return to
procedures" [
main PCB and continue with the next
procedure.
"4.6 Plate
d a
a
"4.5.2 Repair
4 Components
|
"4.5.1 Checking
4
53] of the indoor unit
4
work" [ 60].
4
procedures" [ 58].
Service manual
59