Kelvinator AC error codes
EE: Loading EEPROM Malfunction
E2: Anti-Freeze Protection
E3: Refrigeration System Blocked/Gas Leak
E4: Compressor High Temp Protection
E5: AC-Over Current Protection
E6: Communications Fault
E8: Anti-High Temperature Protection
F1: Sensor, Room Temperature (Indoor)
F2: Sensor, Tube Temperature (Indoor)
F3: Sensor, Ambient (Outdoor)
F4: Sensor, Coil (Outdoor)
F5: Sensor, Compressor Discharge (Outdoor)
F6: Anti-High Temperature Protection
FH: Anti-Freeze Limit, Frequency Drop
H1: Defrosting. It is normal. The unit is in defrosting mode and heating will recommence soon.
H3: Compressor Overload Protection
H5: IPM Protection
H6: Fan Stall, Indoor Unit
HC: PFC Protection
P1: Compressor Rated Frequency-Test State
P2: Compressor Maximum Frequency-Test State
P3: Compressor Medium Frequency-Test State
PH: High Voltage Protection
PL: Low Voltage Protection
PO: Compressor Minimum Frequency-Test State
LP: Indoor & Outdoor Units Don’t Match
L3: Outdoor DC Fan Motor Malfunction
C5: Jumper Cap Malfunction
d1: Compressor off
d2: The air conditioner continues to cool or heat during the demand response event,but the electrical energy consumed by the air conditioner in a half your period is not more than 50% of the total electrical energy that would be consumed if operating at the rated capacity in a half hour period.
d3: The air conditioner continues to cool or heat during the demand response event, but the electrical energy consumed by the air conditioner in a half your period is not more than 75% of the total electrical energy that would be consumed if operating at the rated capacity in a half hour period.
Outdoor Unit Error Codes
E2: Freeze Protection
H5: IPM protection
E5: Overcurrent protection
EE: EEPROM reading and writing malfunction
PL: Low voltage protection
PH: High voltage protection
HC: PFC overcurrent protection
LP: Mismatching of models of indoor and outdoor units
F3: Malfunction of outdoor ambient temperature sensor
F4: Malfunction of outdoor pipe temperature sensor
F5: Malfunction of outdoor discharge temperature sensor
E6: Communication malfunction
E3: Low-pressure protection (refrigerant leak)
U7: Abnormality of 4-way valve
E8: Over-load protection
E4: Discharge temperature protection
H3: Overload protection
L9: Overpower protection