MrCool DIY E Star Series Installation & Owner's Manual page 51

10.7 Error Code: EL 0C (Refrigerant Leakage Detection diagnosis and solution)
Description: Measure the evaporator coil temperature (T2) of the compressor as it just starts running as Tcool.
In the initial 5 minutes after the compressor starts up, if the following events occur 3 times, the LED will display
the error code and the A/C will turn off.; if T2<Tcool (by 1.8°F (-1°C)) and does not remain continuous for 4
seconds, and the compressor running frequency does not remain higher than 50Hz for 3 minutes.
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.
Is there cool air
blowing from the
indoor air outlet?
Check system for leakages.
Are any leakages
Check system blockages and
clear them if any are present.
The error codes and descriptions are for reference only. If your system displays any of
these codes contact a qualified technician to investigate the matter further.
YES
NO
NO
present?
NO
****Disclaimer****
mrcool.com
Check the T2 sensor.
YES
Is it securely
attached?
Repair the leakage and
YES
recharge the refrigerant.
Replace the
YES
indoor PCB.
Page 50