HVACopediaGree · Heat pump
H0 Compressor slowed - high indoor coil temp in heating
What the control is telling you
Normal operation continues with compressor speed cut because the indoor coil is too hot in heating.
Applies to: Gree Sapphire 9-24k (SAP..HP230V1A)
Likely causes
- Dirty filter or low indoor airflow
- Overcharge
Test and repair steps
- Clean the filter and raise fan speed.
- Check the charge.
Models that show this code
4 models in Gree Sapphire
Other codes on the same units
- F4 Outdoor coil (condenser middle) sensor open or shorted
- F5 Compressor discharge sensor open or shorted
- F6 Compressor slowed - overload
- F8 Compressor slowed - high current
- F9 Compressor slowed - high discharge temperature
- H3 Compressor overload protection
- H4 System abnormal (overload)
- H5 IPM (inverter module) protection
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Source: Gree Sapphire 9-12k (SAP09-12HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Sapphire 18-24k (SAP18-24HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting. 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.