HVACopediaGree · Heat pump
F6 Compressor slowed - overload
What the control is telling you
Normal operation continues with compressor speed cut because the coil temperature is high.
Applies to: Gree Sapphire 9-24k (SAP..HP230V1A), Livo GEN4 30-36k (4LIV..HP230V1A), Vireo GEN3 9-24k (3VIR..HP115/230V1A)
Likely causes
- High load, dirty coil or poor airflow
- Refrigerant charge wrong
Test and repair steps
- Clean the coils and filters and clear the outdoor unit.
- Check fan operation.
- Verify the charge if it happens often.
Models that show this code
12 models in Gree Sapphire, Gree Livo GEN4, Gree Vireo GEN3
Other codes on the same units
- F1 Indoor room air sensor open or shorted
- F2 Indoor coil sensor open or shorted
- F3 Outdoor ambient sensor open or shorted
- F4 Outdoor coil (condenser middle) sensor open or shorted
- F5 Compressor discharge sensor open or shorted
- F8 Compressor slowed - high current
- F9 Compressor slowed - high discharge temperature
- H0 Compressor slowed - high indoor coil temp in heating
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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; Gree Livo GEN4 30-36k (4LIV30-36HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Vireo GEN3 9-24k (3VIR..HP115-230V1A) service GREE_VIREOGEN3_SERVICE_090921.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.