Hitachi RAC-35WPC Service Manual page 50

No
Yes
The LD301 blinks 10 times.
Power supply voltage error
No
Yes
The LD301 blinks 7 times.
Thermistor abnormality
No
Yes
The LD301 blinks 6 times.
OH thermistor rise
No
Yes
The LD301 blinks 16 times.
High load stop
No
Is there AC 220 -230V between
terminal boards L and N?
AC 187-253 V
Is there a voltage of DC 264-358 V ?
For measuring points, see the instruction plate on the lid of the
electrical parts.
Normal
Check for loose or poorly inserted thermistors.
Normal
Check the thermistors for wire breaks and short-circuits.
Normal
Check if the OH thermistor is not loose or poorly inserted.
The OH thermistor has
detected heat-up in the
compressor.
Check the OH thermistor for wire breaks and short-circuits.
* Restart again.If keep opertaion,no problem.
The current of the compressor over the
upper limit.So, it stopped.After(3 minutes)
restart.
AC 187 V or less, AC 253 V or more
Abnormal
Check for loose or
poorly insert the
reactor
Abnormal
Abnormal
Normal
Normal
Review the freezing cycle.
(Refrigerant leakage or other
reason is conceivable.)
50
Check the power supply.
Ifyon confirm the connect of the reactor
wire, And it is ok, please change the
reactor.
Change the outdoor ele unit [circuit .
abnormal].
Replace the outdoor electrical parts
(in the case of an abnormality in the
voltage detection circuit).
Connect the thermistors.
Replace any abnormal
thermistors.
Replace the outdoor electrical parts
(in the case of an abnormality in the thermistor
detection circuit).
Abnormal
Connect the OH thermistor.
Abnormal
Replace the OH thermistor.
If reviewing the freezing cycle does not
correct the problem, replace the outdoor
electrical parts (in the case of an
abnormality in the thermistor detection circuit).