Refrigerant Leakage Detection Diagnosis And Solution - Midea MEHS-09PSH1 Service Manual

9.3.6 Refrigerant Leakage Detection diagnosis and solution(EC)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
EC
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－2
°C( Tcool－35.6
seconds and this situation happens 3 times, the display area will
show "EC" and AC will turn off.
T2 sensor faulty
●
Indoor PCB faulty
●
System problems, such as leakage or blocking.
●
°F) does not keep continuous 4