April 12, 2020
MRCOOL AC Error Codes
MRCOOL AC Error Codes Error code meaning E1 activation of high pressure switch Stirring of E3 low pressure switch Discharge of high temperature protection of E4 air compressor F2 malfunction of condenser temperature thermistor F3 malfunction of outdoor ambient temperature thermistor F4 Exhaust Exit Temporary Malfunction. The sensor On normal operation H1 defrost operation