Kinghome · Heat pump

OF Debug menu option OFF

Menu / mode display Kinghome Ultranixx

What the display is showing

OF in the KU outdoor debug menu means the selected function (forced defrost 06, refrigerant recovery 08 or forced operation 09) is switched off.

Applies to: Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers

What to do

Pick OF with SW2 or SW3, then save with SW1.

Models that show this code

6 models in Kinghome Ultranixx

KU24UH2IKU36UH2IKU36UHOKU48UH2IKU60UH2IKU60UHO

Other codes on the same units

HC PFC protection
LC Compressor start failure
ON Debug menu option ON
PA AC current protection
PH DC bus voltage high
PL DC bus voltage low
PU Capacitor charging failure
Pc Drive current detection error

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

Open the app

Source: Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 2.3.5 to 2.3.7. Summarized in our own words; check the original manual for your model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.