![background image](http://html1.mh-extra.com/html/daikin/ftxa20a/ftxa20a_service-manual_2459411082.webp)
2
|
Components
Service manual
82
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
Is the power supply to the indoor unit
correct?
Action
Yes
Correct the wiring between the power
supply terminal of the indoor unit and
the indoor unit power PCB, see
No
See "To check the power supply to the
indoor unit" (
To perform an electrical check of the indoor unit power PCB
Prerequisite:
First perform a power check of the indoor unit power PCB, see
1
Measure the voltage between the pins 1‑4 of the connector S102.
Result:
The measured voltage MUST be 324 VDC.
a
a
Connector S102
Is the measured voltage on the indoor
unit power PCB correct?
Action
Yes
power PCB and continue with the next
procedure.
No
Replace the indoor unit power PCB, see
To check if the correct spare part is installed
Prerequisite:
First perform all earlier checks of the indoor unit main PCB, see
1
Visit your local spare parts webbank.
2
Enter the model name of your unit and check if the installed spare part
number corresponds with the spare part number indicated in the webbank.
Is the correct spare part for the indoor
unit power PCB installed?
Action
Yes
power PCB and continue with the next
procedure.