Hitachi RAC-18WPE Service Manual page 52

Yes
The LD301 blinks 14 times
Active voltage abnormal
No
Yes
The LD301 blinks 12 times
Fan lock stopped
No
Yes
The LD301 blinks 11 times.
Fan stopped due to a strong wind
The creepage breaker have already set?
Yes
Q601,Q602 (RAC-42/50WPE only) have
malfunction
The product detected an abnormality in the
outdoor fan and stopped its operation. Possible
causes include a pause due to a strong wind,
foreign matter in the fan, abnormality in the fan
motor, and abnormality in the drive circuit.
It is a pause due to a strong wind. As the wind
weakens, the product will start again.
No
Does the compressor insulation OK?
Normal
Check if the fan is clear of foreign
matter and abnormalities.
Normal
Check the fan motor for loose
connectors.
Normal
Is the wind too strong?
Check if the product can restart all
right. (It takes several minutes for
it to start again.)
It stops
Check the outdoor fan motor. (For details, see
the page on the outdoor fan motor or the
instruction plate on the lid of the electrical
parts.) Is the outdoor fan motor abnormal?
Fan motor normal
52
Abnormal
Change the compressor and then
check the outdoor ele. unit .
Change the outdoor ele. unit.
Change the outdoor ele. unit.
Q601,Q602 abnormal
Abnormal
Remove all foreign matter.
If the fan is abnormal, replace the
fan.
Abnormal
Insert the connector.
After restarting,
the product will
run continuously.
This is not a sign of a failure in the
outdoor fan motor or outdoor electrical
parts.
Fan motor
abnormal
Replace the outdoor fan motor.
Replace the outdoor electrical
parts (in the case of an
abnormality in the drive circuit of the
outdoor fan).