Kinghome KU36UH2I Error Codes

Updated October 13, 2026 · by Aurora Star Tech Inc.

Kinghome KU36UH2I error codes and diagnostic codes. The KU36UH2I is a Kinghome heat pump in the Kinghome Ultranixx series.

Homeowner with a heat pump problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Kinghome KU36UH2I error codes list

Code	Meaning	Severity
C4	ODU jumper cap error	Medium
E1	High pressure protection / high-pressure sensor fault	High
E3	Low pressure protection / low-pressure sensor fault	High
E4	Compressor discharge temperature too high	High
EE	Memory chip fault	High
F2	Sensor fault (indoor coil or outdoor condenser)	Medium
F3	Outdoor ambient temperature sensor fault	Medium
F4	Sensor fault (outdoor condenser or discharge)	Medium
F6	Frequency limit for overload / ODU tube sensor fault	Medium
H4	Overload protection (high condensing pressure)	High
H5	IPM module protection	Critical
H6	Fan motor feedback fault (indoor or outdoor)	High
H7	Compressor out-of-step	High
HC	PFC protection	High
LC	Compressor start failure	High
P0	Compressor minimum-frequency test / driver reset	Low
P5	Compressor phase overcurrent	High
P6	Main-to-driver communication error	High
P7	Module temperature sensor circuit fault	Medium
P8	Power module over-temperature	High
PA	AC current protection	High
Pc	Drive current detection error	High
PH	DC bus voltage high	High
PL	DC bus voltage low	High
PU	Capacitor charging failure	High

All Kinghome Heat Pump error codes →

Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

Kinghome KU36UH2I error codes list

Experience an Energy-Efficient Thermostat in Ajax Today