Daikin RXM20R Service Manual page 126

4 | Components
To check the HAP LED of the main PCB
Service manual
126
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 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" [ 125].
1 Locate the HAP LED on the main PCB.
"4.14 Plate work" [
a
b
Action
Return to "Checking
4
procedures" [ 125] of the PCB and
continue with the next procedure.
Continue with the next step.
"5.1.1 Checking procedures" [
Action
Replace the main PCB, see
4
procedures" [ 133].
Adjust the power supply to the unit, see
"5.1.2 Repair procedures" [
a
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
4
153].
4
205].
"Repair
4
206].
"Checking
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02