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Kinghome Error Codes & Diagnostic Codes

Updated · by Aurora Star Tech Inc.

Kinghome error codes and diagnostic codes: look up a code to see what it means, the likely causes and the steps to fix it.

Kinghome error codes by equipment type

Kinghome Heat Pump error codes

CodeMeaning
A1Outdoor fan IPM module protection
ACOutdoor fan startup failure
AEOutdoor fan current detection error
AJOutdoor fan out-of-step
C4ODU jumper cap error
C5Jumper cap missing or wrong
C8ODU drive jumper cap error
E1High pressure protection / high-pressure sensor fault
E2Indoor coil anti-freeze protection
E3Low pressure protection / low-pressure sensor fault
E4Compressor discharge temperature too high
E5Overcurrent protection
E6Indoor/outdoor communication fault
E8High temperature resistance (overload) protection
E9Water overflow protection
EEMemory chip fault
EUFrequency reduced - module too hot
F0Refrigerant recovery mode
F1Indoor room temperature sensor fault
F2Sensor fault (indoor coil or outdoor condenser)
F3Outdoor ambient temperature sensor fault
F4Sensor fault (outdoor condenser or discharge)
F5Outdoor discharge temperature sensor fault
F6Frequency limit for overload / ODU tube sensor fault
F8Frequency reduced - overcurrent
F9Frequency reduced - high discharge temperature
FHFrequency reduced - anti-freeze
H3Compressor overload protection
H4Overload protection (high condensing pressure)
H5IPM module protection
H6Fan motor feedback fault (indoor or outdoor)
H7Compressor out-of-step
HCPFC protection
L3Outdoor DC fan motor fault
L9Power limit protection
LCCompressor start failure
LPIndoor and outdoor unit mismatch
P0Compressor minimum-frequency test / driver reset
P1Compressor rated-frequency test display
P2Compressor maximum-frequency test display
P3Compressor intermediate-frequency test display
P5Compressor phase overcurrent
P6Main-to-driver communication error
P7Module temperature sensor circuit fault
P8Power module over-temperature
PAAC current protection
PcDrive current detection error
PHDC bus voltage high
PLDC bus voltage low
PUCapacitor charging failure
U1Compressor phase current detection circuit fault
U3DC bus voltage drop fault
U5Whole-unit current detection fault
U7Four-way valve abnormal
ULOutdoor fan overcurrent

Find codes by Kinghome model

Kinghome Ultranixx Eco

KD24UHIKD24UHOKD30UHIKD30UHOKD36UHIKD36UHOKD42UHIKD42UHOKD48UHIKD48UHOKD60UHIKD60UHO

Kinghome KM HEDI

KM09HEDIKM12HEDIKM18HEDI

Kinghome KM HF1DI

KM09HF1DIKM12HF1DIKM18HF1DIKM21HF1DIKM24HF1DI

Kinghome KM HT1DI

KM09HT1DIKM12HT1DIKM18HT1DIKM24HT1DI

Kinghome Ultranixx

KU24UH2IKU36UH2IKU36UHOKU48UH2IKU60UH2IKU60UHO

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.

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