4
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Components
Service manual
96
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
Yes
No further actions required.
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
4.8 Indoor unit fan motor
4.8.1 Wall mounted indoor units
Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a mechanical check of the DC fan motor assembly
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
153].
1
Check the fan for damage, deformations and cracks. Replace the fan as
needed.
2
Check that the fan is correctly installed on the DC fan motor. Correct as
needed.
3
Manually rotate the fan and check the friction of the DC fan motor shaft
bearing.
Is the DC fan motor shaft friction
normal?
Action
Yes
Perform an electrical check of the DC
fan motor assembly, see
96].
No
Replace the DC fan motor assembly, see
To perform an electrical check of the DC fan motor assembly
Prerequisite:
First perform a mechanical check of the DC fan motor assembly, see
96].
1
Remove the cover from the switch box; see
153].
2
Disconnect the DC fan motor connector from the appropriate PCB.
3
Measure the resistance between the pins 1-2, 1-3, and 2-3 of the DC fan
motor connector.
Result:
All measurements MUST be approximately the same.
DC fan motor measurements are
correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.