E42
Current cut (2/2)
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
After
resetting power for
several times does it
become normal?
NO
YES
Temporary noise may cause of anomaly.
If noise source can be found, take countermeasure.
Is the
checked result of power
transistor module
OK?
NO
• Is the space for installation of indoor and/or outdoor unit enough?
• Is there any short-circuit of air on indoor and/or outdoor unit?
• At cooling, does the outdoor fan motor run?
Are the service valves fully opened?
Is the filter clogged?
• At heating, does the indoor fan motor run?
Are the service valves fully opened?
Is the filter clogged?
• Is there any liquid flooding?
Is the superheat within normal range?
• Is there any anoumalous sound on the compressor?
YES
From previous page
YES
Defective outdoor unit
PCB
➞
Replace.
Defective outdoor unit
PCB
➞
Replace.
2. Error detection method
In order to prevent from
overcurrent of inverter,
if the current exceeds the
specications, it makes the
compressor stopping.
3 .
Condition of error displayed
• If the output current of inveter
exceeds the specications,
it makes the compressor
stopping.
4. Presumable cause
• Defective outdoor unit PCB
• Faulty power source
• Insufficient refrigerant amount
• Faulty compressor
• Faulty power transistor
module
Note:
Error code
Remote control:
LED Green Red
Content
Indoor
Stays OFF
Keeps flashing
'22 • PAC-SM-412
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88
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