Daikin RXTA30B2V1B Service Manual page 136

4 | Components
To perform a mechanical check of the DC fan motor assembly
To perform an electrical check of the DC fan motor assembly
Service manual
136
Prerequisite: First perform a mechanical check of the propeller fan blade
assembly, see "4.15.1 Checking
1 Visually check:
▪ For any burnt‑out part or wire. If found, replace the fan motor, see
"4.15.2 Repair procedures" [
▪ That fan motor fixation bolts are correctly installed and fixed. Correct as
needed.
2 Manually rotate the fan motor shaft. Check that it rotates smoothly.
3 Check the friction of the DC fan motor shaft bearing.
Is the DC fan motor shaft friction
normal?
Yes
No
1 First perform a mechanical check of the DC fan motor assembly, see
"4.15.1 Checking procedures" [
INFORMATION
Check the DC fan motor power supply (voltage) circuit on the PCB.
2 Turn ON the power of the unit.
3 Activate Cooling or Heating operation via the user interface.
4 Check the functioning of the outdoor unit fan.
Outdoor unit fan ...
Rotates continuously (without
interruption)
Does not rotate or rotates for a short
time
INFORMATION
The DC fan motor connector MUST be plugged into the appropriate PCB.
5 Confirm via the service monitoring tool that the DC fan motor assembly
receives an ON signal.
6 Turn OFF the unit via the user interface.
7 Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
4
procedures" [ 135].
4
138].
Action
Perform an electrical check of the DC
fan motor assembly, see
"4.15.1 Checking
Replace the DC fan motor assembly, see
"4.15.2 Repair
4
135].
Action
DC fan motor assembly is OK. Return to
the troubleshooting of the specific error
and continue with the next procedure.
Continue with the next step.
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
4
procedures" [ 135].
4
procedures" [ 138].
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02