HVACopediaKinghome · Heat pump
E5 Overcurrent protection
What the control is telling you
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)
Likely causes
- Unstable supply voltage
- Low supply voltage with heavy load
- Dirty evaporator
Test and repair steps
- Measure the supply voltage at the unit under load.
- Clean the evaporator and condenser.
- Check compressor and wiring connections.
- Retest after the supply is stable.
Models that show this code
9 models in Kinghome KM HT1DI, Kinghome KM HF1DI
Other codes on the same units
- 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
- F0 Refrigerant recovery mode
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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. Summarized in our own words; check the original manual for your model.
Homeowner looking at this code? See what it means for you and when to call a technician.
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.