Gree Air Conditioners Error Codes Gree Air Conditioners Error Codes Fault code is subtracted from the number of green LED flash, blocking unit operation. E1: refrigerant system high pressure protection E2: anti-freezing protection E4: compressor exhaust high temperature protection E5: AC Over-current Protection E6: Communication failure between outdoor unit and indoor unit E8: Anti-High Temperature … Continue reading Gree Air Conditioners Error Codes | blueridge mini split