Kinghome Error Code E5: Overcurrent protection (Heat Pump)

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

Kinghome error code E5 on a heat pump means: Overcurrent protection. It is also called Kinghome diagnostic code E5.

Medium severityHeat PumpKinghome KM HT1DI · Kinghome KM HF1DI

Homeowner? What Kinghome code E5 means for you

Check, then call Your heat pump is reporting: Overcurrent protection. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Safe things you can check yourself

Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977 Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Kinghome error code E5 mean?

Running current went too high and the compressor and outdoor fan stopped (whole unit in heating).

Applies to: Kinghome KM09HT1DI, KM12HT1DI, KM18HT1DI, KM24HT1DI wall mini-splits; Kinghome KM09HF1DI to KM24HF1DI wall mini-splits (Gree GFH..DA/DB)

Common causes of Kinghome code E5

Unstable supply voltage
Low supply voltage with heavy load
Dirty evaporator

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Kinghome models that use code E5

KM09HF1DI KM09HT1DI KM12HF1DI KM12HT1DI KM18HF1DI KM18HT1DI KM21HF1DI KM24HF1DI KM24HT1DI

Other Kinghome Heat Pump codes

Code	Meaning
C5	Jumper cap missing or wrong
C8	ODU drive jumper cap error
E1	High pressure protection / high-pressure sensor fault
E2	Indoor coil anti-freeze protection
E3	Low pressure protection / low-pressure sensor fault
E4	Compressor discharge temperature too high
E6	Indoor/outdoor communication fault
E8	High temperature resistance (overload) protection
E9	Water overflow protection
EE	Memory chip fault
EU	Frequency reduced - module too hot
F0	Refrigerant recovery mode

All Kinghome Heat Pump error codes →

Kinghome code E5: homeowner questions

What does Kinghome code E5 mean?

Overcurrent protection. Running current went too high and the compressor and outdoor fan stopped (whole unit in heating).

Is it safe to keep using my heat pump with code E5?

It depends on the cause. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Can I reset Kinghome code E5 myself?

You can try one reset (power off for 30 seconds, then on). If Kinghome code E5 comes back, the cause is still there and a licensed technician should check it.

Who can fix Kinghome code E5 near me?

Aurora Star Tech Inc. repairs Kinghome heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

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

Source: Kinghome KM09-12-18-24HT1DI service manual, sec. 9.1 error code list; Kinghome KM09-24HF1DI service manual, sec. 11.1 error code list. Written in our own words as a summary; always check the original manual.

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.