Repair Procedures; Main Pcb; Class 20~35 Units - Daikin FTXA20A Service Manual

Problem solved?

2.11.2 Repair procedures

2.12 Main PCB

2.12.1 Class 20~35 units

Checking procedures
To perform a power check of the main PCB
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
All LED's of the inverter analyzer are lit
during inverter test?
Yes
No
After all checking procedures listed above have been performed:
Is the problem solved?
Yes
No
As the inverter PCB is integrated in the main PCB of the unit, see
4
PCB" [ 91] for the repair procedures.
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.
2
|
Action
Return to "2.11.1 Checking
4
procedures" [ 89] of the inverter PCB
and continue with the next procedure.
Replace the inverter PCB, see
"2.11.2 Repair procedures" [
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"2.14 Plate work" [
Components
4
91].
"2.12 Main
4
120].
Service manual
91