Daikin Emura RXJ20A5V1B Service Manual page 118

4 | Components
To check the HAP LED of the main PCB
Service manual
118
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" [ 117].
1 Locate the HAP LED on the main PCB.
a HAP LED
"4.14 Plate
a
b
Action
Return to "Checking
4
procedures" [ 117] 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" [ 124].
Adjust the power supply to the unit, see
"5.1.2 Repair procedures" [
a
4
work" [ 144].
4
180].
"Repair
4
181].
"Checking
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08