3
|
Components
Service manual
89
(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
Is the problem solved?
Action
No
Return to
main PCB and continue with the next
procedure.
3.8 Main PCB
3.8.1 Class 20~42 units
Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a power check of the main PCB
(A)RXF20~35A + RXF20+25B + (A)RXF20~42C + (A)RXF42D units
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?
Action
Yes
Return to
continue with the next procedure.
No
Continue with the next step.
3
Check the power supply to the unit, see
153].