Kelvinator Air Conditioner Error Codes

Kelvinator air conditioner error codes help technicians and users identify potential causes of system failures in air conditioning systems.

---

Error Code Table

Error Code	Meaning
d1	Compressor off.
d2	During demand response events, the air conditioner continues cooling/heating but consumes no more than 50% of its rated power over 30 minutes.
d3	During demand response events, the air conditioner continues cooling/heating but consumes no more than 75% of its rated power over 30 minutes.
E2	Anti-freezing protection.
E3	Low-pressure protection (refrigerant leak).
E4	Discharge temperature protection.
E5	Overcurrent protection.
E6	Communication malfunction.
E8	Overload protection.

---

Detailed Error Code Descriptions

Error Code	Description
EE	EEPROM loading malfunction.
E2	Anti-freezing protection.
E3	Refrigeration system blockage or gas leakage.
E4	High temperature protection for the compressor.
E5	AC overcurrent protection.
E6	Communication failure.
E8	High-temperature protection.
F1	Indoor temperature sensor malfunction.
F2	Indoor pipe temperature sensor malfunction.
F3	Outdoor temperature sensor malfunction.
F4	Outdoor coil sensor malfunction.
F5	Compressor discharge sensor malfunction.
F6	High-temperature protection.
FH	Anti-freezing limit or frequency drop.
H1	Defrosting mode. This is normal. Heating will resume shortly after defrosting.
H3	Compressor overload protection.
H5	IPM protection.
H6	Fan stall, indoor unit.
HC	PFC protection.
P1	Compressor nominal frequency test mode.
P2	Compressor maximum frequency test mode.
P3	Compressor medium frequency test mode.
PH	High voltage protection.
PL	Low voltage protection.
PO	Compressor minimum frequency test mode.
LP	Indoor and outdoor units mismatch.
L3	Outdoor DC fan motor malfunction.
C5	Bridge cap malfunction.
d1	Compressor off.
d2	During demand response events, the air conditioner continues cooling/heating, consuming no more than 50% of its rated power over 30 minutes.
d3	During demand response events, the air conditioner continues cooling/heating, consuming no more than 75% of its rated power over 30 minutes.

---

Outdoor Unit Error Codes

Error Code	Meaning
E2	Anti-freezing protection.
H5	IPM protection.
E5	Overcurrent protection.
EE	EEPROM read/write malfunction.
PL	Low voltage protection.
PH	High voltage protection.
HC	PFC overcurrent protection.
LP	Indoor and outdoor unit model mismatch.
F3	Outdoor ambient temperature sensor malfunction.
F4	Outdoor pipe temperature sensor malfunction.
F5	Outdoor discharge temperature sensor malfunction.
E6	Communication malfunction.
E3	Low-pressure protection (refrigerant leak).
U7	4-way valve abnormality.
E8	Overload protection.
E4	Discharge temperature protection.
H3	Overload protection.
L9	Overpower protection.

---