Class 50~71 Units - Daikin Sensira Series Service Manual

2 | Components

2.8.2 Class 50~71 units

Checking procedures
To perform a power check of the main PCB
To check the HAP LED of the main PCB
Service manual
84
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.
a
b
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" [ 84].
1 Locate the HAP LED on the main PCB.
"2.10 Plate
Action
Return to "Checking
4
procedures" [ 84] of the PCB and
continue with the next procedure.
Continue with the next step.
"3.1.1 Checking
Action
Replace the main PCB, see
4
procedures" [ 89].
Adjust the power supply to the unit, see
"3.1.2 Repair procedures" [
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
4
work" [ 101].
4
procedures" [ 127].
"Repair
4
128].
"Checking
Split Sensira R32
ESIE18-12E – 2021.02