Gree TERRA09HP230V1A Installation, Service & Troubleshooting page 79

E1 - E3 Error Codes
E1
High Pressure Protection of System
Status:
During cooling & dehumidifying, indoor unit
operates while other functions stop; During
heating operation, complete unit stops
E2
Antifreeze Protection
Status:
Cooling operation, compressor stops while
indoor fans runs. Heating operation, complete
unit stops
E3
Low Pressure Protection
Status:
Cooling operation, compressor stops while
indoor fans runs. Heating operation, complete
unit stops
Error Code Diagnostics
Fault & Status Possible Causes
1. Refrigerant overcharge
2. Dirty outdoor coil
3. Blockage of airflow
4. Outdoor ambient too high
1. Poor air return in indoor unit
2. Fan speed abnormal
3. Indoor coil dirty
1. Low refrigerant charge
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