Kinghome Error Code ON: Debug menu option ON (Heat Pump)
Kinghome error code ON on a heat pump means: Debug menu option ON. It is also called Kinghome diagnostic code ON.
Homeowner? What Kinghome code ON means for you
Usually minor Your heat pump is reporting: Debug menu option ON. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.
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) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Kinghome error code ON mean?
ON in the KU outdoor debug menu means the selected function (forced defrost 06 or refrigerant recovery 08) is switched on.
Applies to: Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers
Kinghome models that use code ON
KU24UH2IKU36UH2IKU36UHOKU48UH2IKU60UH2IKU60UHO
Other Kinghome Heat Pump codes
All Kinghome Heat Pump error codes →
Kinghome code ON: homeowner questions
What does Kinghome code ON mean?
Debug menu option ON. ON in the KU outdoor debug menu means the selected function (forced defrost 06 or refrigerant recovery 08) is switched on.
Is it safe to keep using my heat pump with code ON?
Usually yes. Code ON is normally minor, but if it keeps coming back have it checked.
Can I reset Kinghome code ON myself?
You can try one reset (power off for 30 seconds, then on). If Kinghome code ON comes back, the cause is still there and a licensed technician should check it.
Who can fix Kinghome code ON 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
Troubleshooting guides
- 2 flashes: HPS open ≥6 s; 3: discharge >263°F; 4: discharge <90°F after 1 h; 5: defrost failure; 6: discharge sensor short; 7: outdoor sensor open/short; 9: bonnet sensor fail All brands · Heat Pump
- Excess ice on outdoor coil All brands · Heat Pump
- Extremely high head pressure in heating (dual fuel) All brands · Heat Pump
- Insufficient heat in cold weather All brands · Heat Pump
- Liquid slugging / compressor damage in heating All brands · Heat Pump
- No mode change / wrong mode All brands · Heat Pump
- Odour at registers (dirty sock) All brands · Heat Pump
- Poor heating but OK cooling (or vice-versa) All brands · Heat Pump
- Service problem analysis (Amana chart excerpt) All brands · Heat Pump
- Subcooling too high All brands · Heat Pump
- Subcooling too low vs mfr target All brands · Heat Pump
- TXV bulb/diaphragm failure All brands · Heat Pump
- Water-source: coil freezing All brands · Heat Pump
- Won't change mode / both coils same temperature All brands · Heat Pump
- Wrong superheat after line-set change; poor capacity All brands · Heat Pump
- Force a defrost cycle from the remote Kinghome · Heat Pump
- Force a defrost from the outdoor board (debug item 06) Kinghome · Heat Pump
- Force cooling or heating from the outdoor board (debug item 09) Kinghome · Heat Pump
- Open the outdoor board debug menu (SW1 held 5 s) Kinghome · Heat Pump
- Start refrigerant recovery from the outdoor board (debug item 08) Kinghome · Heat Pump
- Start the pilot (test) run from the remote Kinghome · Heat Pump
- Switch between defrosting mode 1 and 2 Kinghome · Heat Pump
Source: Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 2.3.5 and 2.3.6. 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.