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3
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Components
Service manual
85
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
3.8 Main PCB
3.8.1 Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a power check of the main PCB
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.
a
b
a
Black wire
b
White wire
Is the measured voltage on the PCB
correct?
Action
Yes
Return to
continue with the next procedure.
No
Continue with the next step.
3
Check the power supply to the unit, see
128].
Does the unit receive power?
Action
Yes
Replace the main PCB, see
No
Adjust the power supply to the unit, see
To check the HAP LED of the main PCB
Prerequisite:
First check the power supply to the main PCB, see
Summary of Contents for Comfora ARXP20L
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