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7.7
EC/EL 0C (Refrigerant Leakage Detection diagnosis and solution)
Description: Define the evaporator coil temperature T2 of the compressor just starts running as Tcool.
In the first 5 minutes after the compressor starts up, if T2 < Tcool-1°C(1.8°F) does not keep continuous 4 seconds
and compressor running frequency higher than 50Hz does not keep for 3 minutes, and this situation happens
3 times, the LED displays the failure code and the AC turns off.
Recommended parts to prepare:
• T2 sensor
•
Indoor PCB
• Additional refrigerant
Troubleshooting and repair
Power off, then restart the unit 2 minutes later.
Does a problem remain?
Put your hands in front of
the indoor air outlet.
air blowing out from
Check system for leakages.
Check system for blockages
and clear blockages if present.
:
YES
Is there cool
indoor air outlet?
NO
Are any leakages
present?
NO
Troubleshooting
Check the T2 sensor.
YES
Is it securely
attached?
NO
Repair the leakage and
YES
recharge the refrigerant.
28
Replace the
YES
indoor PCB
Securely fix
into place
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