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

3.8 Main PCB

3.8.1 Checking procedures

To perform a power check of the main PCB
To check the HAP LED of the main PCB
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
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.
Result: The measured voltage MUST be 230 V AC.
b
a
a Black wire
b White wire
Is the measured voltage on the PCB
correct?
Yes
No
3 Check the power supply to the unit, see
Does the unit receive power?
Yes
No
Prerequisite: First check the power supply to the main PCB, see
4
procedures" [ 85].
3
|
"3.10 Plate work" [
Action
Return to "3.8.1 Checking
4
procedures" [ 85] of the PCB and
continue with the next procedure.
Continue with the next step.
"4.1.1 Checking procedures" [
Action
Replace the main PCB, see
4
procedures" [ 88].
Adjust the power supply to the unit, see
"4.1.2 Repair procedures" [
Components
4
100].
4
128].
"3.8.2 Repair
4
129].
"3.8.1 Checking
Service manual
85