Kinghome Error Code C4: ODU jumper cap error (Heat Pump)
Kinghome error code C4 on a heat pump means: ODU jumper cap error. It is also called Kinghome diagnostic code C4.
Homeowner? What Kinghome code C4 means for you
Check, then call Your heat pump is reporting: ODU jumper cap error. 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) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Kinghome error code C4 mean?
The outdoor board reports the jumper cap does not match.
Applies to: Kinghome Ultranixx Eco KD24UHO to KD60UHO outdoor units with KD..UHI air handlers; Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers
Common causes of Kinghome code C4
- Cap missing
- Wrong cap model
- Detection circuit fault
Kinghome models that use code C4
KD24UHIKD24UHOKD30UHIKD30UHOKD36UHIKD36UHOKD42UHIKD42UHOKD48UHIKD48UHOKD60UHIKD60UHOKU24UH2IKU36UH2IKU36UHOKU48UH2IKU60UH2IKU60UHO
Other Kinghome Heat Pump codes
All Kinghome Heat Pump error codes →
Kinghome code C4: homeowner questions
What does Kinghome code C4 mean?
ODU jumper cap error. The outdoor board reports the jumper cap does not match.
Is it safe to keep using my heat pump with code C4?
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 C4 myself?
You can try one reset (power off for 30 seconds, then on). If Kinghome code C4 comes back, the cause is still there and a licensed technician should check it.
Who can fix Kinghome code C4 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 Ultranixx Eco KD24-60UHO service manual, sec. 3.3-3.4; Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 3.3-3.4. 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.