HVACopediaGree · Heat pump
E8 High temperature / overload protection
What the control is telling you
The coil temperature (outdoor coil in cooling, indoor coil in heating) got too high, so the compressor stops.
Applies to: Gree Sapphire 9-24k (SAP..HP230V1A), Livo GEN4 30-36k (4LIV..HP230V1A), Vireo GEN3 9-24k (3VIR..HP115/230V1A), Multi21+ 18-24k multi-zone (MULTI..HP230V1CO)
Likely causes
- Outdoor temperature above the operating range (above 53°C/127°F)
- Poor heat rejection: dirty coil or blocked airflow
- Indoor or outdoor fan not running properly
- Fan capacitor or fan motor failed
- Board fault
Test and repair steps
- Check the outdoor ambient; above 53°C the trip is normal protection.
- Clean the coils and clear the space around the units.
- Check that both fans run; check fan wiring connections.
- Test the fan capacitor and motor (where used) and replace as needed.
- If all of the above check good, replace the board.
Models that show this code
14 models in Gree Sapphire, Gree Livo GEN4, Gree Vireo GEN3, Gree Multi21+
Other codes on the same units
- E4 Compressor discharge temperature too high
- E5 Overcurrent protection (whole unit)
- E6 Indoor/outdoor communication fault
- E7 Mode conflict between indoor units (status)
- E9 Cold air prevention (status)
- F0 Low refrigerant / refrigerant blocked protection
- F1 Indoor room air sensor open or shorted
- F2 Indoor coil sensor open or shorted
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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; Gree Multi21+ multi-zone 18-24k (MULTI18-24HP230V1CO) service.pdf - section 9.1 Malfunction status sheet / 9.2 Malfunction Checking and Elimination. Summarized in our own words; check the original manual for your model.
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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.