Hitachi RAF-25RPA Service Manual page 92

4. Failure phenomenon: The fan motor will not stop.
Situation I have conducted the stop operation on the product by remote control, but the indoor fan motor will not stop.
Estimated failure locations
Diagnosis flow
Initiating troubleshooting
Run the product by remote control and then stop it.
(Reproduce the failure phenomenon.)
Is the voltage between pins
connector (CN10) below 1.1 V? (Take measurements
while the failure phenomenon is present.)
Replace the "indoor electrical unit".
・Indoor fan motor
・Fan motor drive circuit
2 and 4 of the fan motor
No
Yes
Replace the "indoor fan motor".
92