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Components
Service manual
78
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
1
Disconnect the damper motor connector S400 from the indoor unit main PCB.
2
Measure the resistance between the following pins of the damper motor
connector.
Result:
The measurements MUST be as shown in the table below.
Pins
Measured resistance (Ω)
1-2
139.5~160.5
1-13
1-14
1-15
2-13
279~321
2-14
2-15
13-14
13-15
14-15
Damper motor resistance
measurements are correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Continue with the next step.
3
79].
4
Measure the resistance between the following pins of the connector on the
damper motor.
Result:
The measurements MUST be as shown in the table below.
Pins
Measured resistance (Ω)
1-2
139.5~160.5
1-3
1-4
1-5
2-3
279~321
2-4
2-5
3-4
3-5
4-5
Damper motor resistance
measurements are correct?
Action
Yes
Replace the damper motor wiring
harness, see
79].