3
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Components
Service manual
76
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
100].
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
75].
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
1
Remove the cover from the switch box; see
100].
2
Disconnect the DC fan motor connector from the appropriate PCB.
3
Measure the resistance between the pins 6-9, 6-12, and 9-12 of the DC fan
motor connector.
Result:
All measurements MUST be 71.6~82.4 Ω.
4
Check the diode module by measuring the voltage between the following pins
of the DC fan motor connector.
VDC
Comm
Voltage
1
3
0.992 V DC
2
3
1.433 V DC
3
1
OL
3
2
OL
DC fan motor measurements are
correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Replace the DC fan motor, see
3.5.2 Repair procedures
To remove 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
100].
Содержание Comfora ARXP20L
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