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Components
Service manual
89
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
5
To install the humidity sensor wiring harness, see
To install the humidity sensor wiring harness
1
Connect the wiring harness connector to the indoor unit main PCB.
WARNING
When reconnecting a connector to the PCB, make sure to connect it on the correct
location and do NOT apply force, as this may damage the connector or connector
pins of the PCB.
2
Route the wiring harness through the appropriate harness retainers towards
the humidity sensor (PCB).
3
Connect the wiring harness to the humidity sensor (PCB).
4
Fix the wiring harness using new tie straps (if needed).
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 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
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
No
Replace the DC fan motor assembly, see
90].
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