The LD301 blinks 4 times.
Switchover failure
The LD301 blinks 3 times.
Abnormally slow rotation
The LD301 blinks twice
Peak current cut
This is a failure in starting up the compressor.
Check the compressor connectors for
looseness and continuity.
Correct the abnormal locations.
Replace the defective parts according
to the diagnosis results found in the
[self-check].
The product detected an abnormality in the control
of the compressor and stopped its operation.
Either the load may be heavy or the drive circuit
may be abnormal.
The product detected a current abnormality in the
compressor and stopped its operation. Either the
load may be heavy or the drive circuit may be
abnormal.
Conduct a [self-check].
Check the compressor for loose
connectors and cord continuity.
Yes
Yes
Yes
No
No
Abnormal
Normal
The LD301 blinks 5 times.
Overload lower limit cut
When cooling: Is the heat exchanger of the outdoor unit clogged up?
Is there shelter around?
When heating: Is the heat exchanger or filter of the indoor unit
clogged up?
Is the freezing cycle abnormal?
Is the freezing cycle abnormal?
Remove the cause of the problem.
Correct the abnormal location.
Since the compressor
load was heavy, the
product was stopped.
Ye s
No
No
No
Ye s
Ye s
The LD301 blinks 6 times.
OH thermistor heat-up
The LD301 blinks 16 times.
Heavy load stopping
Abnormal
Abnormal
Check the OH thermistor for wire breaks and short-circuits.
Replace the OH thermistor.
Check if the OH thermistor is not loose or poorly inserted.
Connect the OH thermistor.
Normal
Normal
Review the freezing cycle.
(Refrigerant leakage or other
reason is conceivable.)
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).
The OH thermistor has
detected heat-up in the
compressor.
The current of the compressor over the
upper limit.So, it stopped.After(3 minutes)
restart.
Ye s
Ye s
No
No
* Restart again.If keep opertaion,no problem.
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