Indoor Unit Main Pcb; Checking Procedures - Daikin Comfora XP Series Service Manual

3 | Components

3.6 Indoor unit main PCB

3.6.1 Checking procedures

To perform a power check of the indoor unit main PCB
Service manual
78
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Turn ON the power of the unit.
2 Measure the voltage between the black and white wires on the PCB. The
measured voltage MUST be 230 V AC.
b
a
a Black wire
b White wire
Is the measured voltage on the indoor
unit PCB correct?
Yes
No
3 Check the power supply to the indoor unit, see
4
procedures" [ 128].
Is the power supply to the indoor unit
correct?
Yes
No
"3.10 Plate work" [
Action
Return to "3.6.1 Checking
4
procedures" [ 78] of the indoor unit
PCB and continue with the next
procedure.
Continue with the next step.
Action
Correct the wiring between the power
supply terminal of the indoor unit and
the indoor unit PCB, see
4
procedures" [ 80].
See "To check the power supply to the
indoor unit" ("4.1.2 Repair
4
procedures" [ 129]) for the next steps.
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
4
100].
"4.1.1 Checking
"3.6.2 Repair
Split Comfora R32
ESIE18-01D – 2022.02