Hitachi RAC-18WPC, Service Manual, Page: 37 / 43

The LD301 blinks 12 times
Fan lock stopped
The LD301 blinks 11 times.
Fan stopped due to a strong wind
It is a pause due to a strong wind. As the wind
weakens, the product will start again.
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.
Check if the fan is clear of foreign
matter and abnormalities.
Remove all foreign matter.
If the fan is abnormal, replace the
fan.
Is the wind too strong?
Check if the product can restart all
right. (It takes several minutes for
it to start again.)
This is not a sign of a failure in the
outdoor fan motor or outdoor electrical
parts.
After restarting,
the product will
run continuously.
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
abnormal
Replace the outdoor fan motor.
Fan motor normal
Replace the outdoor electrical
parts (in the case of an
abnormality in the drive circuit of the
outdoor fan).
Check the fan motor for loose
connectors.
Insert the connector.
Yes
Yes
The LD301 blinks 14 times
Change the outdoor ele. unit.
The creepage breaker have already set? Yes
No
No
Abnormal
Does the compressor insulation OK?
Change the compressor and then
check the outdoor ele. unit .
Abnormal
Abnormal
Normal
Normal
Normal
No
Active voltage abnormal
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