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Components
Service manual
150
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
Is the measured voltage 0 V DC?
Action
Yes
Perform a check of the main PCB, see
135].
No
Continue with the next step.
13
Connect the DC fan motor connector to the PCB. Remove the plastic insert
from the connector for easier measurement.
CAUTION
Ensure that the system CANNOT start the fan. Disable all modes (heating, cooling, …)
on the unit. The unit MUST be kept powered.
14
Manually (slowly) rotate the fan blade propeller 1 turn and measure the
voltage on the DC fan motor connector pins 1-4.
Result:
4 pulses MUST be measured.
Pulses are measured during fan blade
propeller rotation?
Action
Yes
Perform a check of the main PCB, see
No
Replace the DC fan motor, see
Problem solved?
After all checking procedures listed above have been performed:
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.
Repair procedures
To remove the propeller fan blade assembly
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Remove the required plate work, see
153].
2
Remove the nut that fixes the propeller fan blade assembly.