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Refrigerant Leakage Detection Diagnosis and Solution
(EC)
Error Code EC
Malfunction decision conditions Define the evaporator coil temp.T2 of the compressor just starts running as Tcool. In the beginning 5
minutes after the compressor starts up, if T2 <Tcool-35.6°F(Tcool-2°C) does not keep continuous 4
seconds and this situation happens 3 times, the display area will show “EC” and AC will turn off.
Supposed caused
S T2 sensor faulty
S Indoor PCB faulty
S System problems, such as leakage or blocking
Troubleshooting
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