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Components
Service manual
106
(A)(F)TXF20~71A + FTXF20~25B + (A)(F)TXF20~42C + (A)(F)TXF20~42D +
(A)(F)TXF20~42E + (A)RXF20~71A + RXF20~60B + (A)RXF20~42C +
(A)RXF20~42D + (A)RXF20~42E
Split Sensira R32
ESIE18-12G – 2023.01
3.8.2 Class 50~71 units
Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a power check of the main PCB
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
124].
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?
Action
Yes
continue with the next procedure.
No
Continue with the next step.
3
Check the power supply to the unit, see
Does the unit receive power?
Action
Yes
No
Adjust the power supply to the unit, see
154].
To check the HAP LED of the main PCB
Prerequisite:
First check the power supply to the main PCB, see
1
Locate the HAP LED on the main PCB.