Repair Procedures; Main Pcb; Class 20~42 Units - Daikin Sensira Series Service Manual

2 | Components
Problem solved?

2.7.2 Repair procedures

2.8 Main PCB

2.8.1 Class 20~42 units

Checking procedures
To perform a power check of the main PCB
Service manual
74
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" [ 74] 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.
b
a
a Black wire
b White wire
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"2.10 Plate
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
"2.8 Main
4
work" [ 101].
Split Sensira R32
ESIE18-12E – 2021.02