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Components
Service manual
93
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
Is the problem solved?
Action
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
4.7 Humidity sensor
4.7.1 Checking procedures
To perform a power check of the humidity sensor
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Remove the required plate work, see
2
Turn ON the power of the unit.
3
Measure the power supply voltage between the pins 1‑4 on the humidity
sensor connector CN.
Result:
The measured voltage MUST be 5 V DC.
a
a
Humidity sensor (PCB)
Is the measured power supply voltage
correct?
Action
Yes
Skip the next step..
No
Continue with the next step.
4
Measure the output voltage between between the pins 1‑4 on the connector
S600 on the indoor unit main PCB.
Result:
The measured voltage MUST be 5 V DC.
Is the output voltage on the indoor unit
main PCB correct?
Action
Yes
Replace the humidity sensor wiring
harness, see