Gree air conditioners are renowned for performance and reliability. But like any electrical appliance, they sometimes display error codes to alert users when something goes wrong. Understanding these error codes helps you identify problems faster to avoid costly repair.
In this guide, I’ll break down the Top 10 Gree AC error codes that you may help to find the real causes with solutions.
Most Common Error Codes:
E1 – High Pressure Protection
Meaning: The system detects unusually high refrigerant pressure.
Causes: Dirty condenser coil, blocked airflow, or refrigerant issues.
Fix: Clean the outdoor unit, check airflow, consult a technician to inspect refrigerant levels.
Tip: Prevent this by regular cleaning of the outdoor condenser.
E2 – Indoor Anti-Freeze Protection
Meaning: The indoor coil is freezing or at risk of icing.
Causes: Poor airflow or low refrigerant.
Fix: Clean filters, ensure vents are not blocked, and check refrigerant with a pro.
E3 – Low Pressure/Low Refrigerant Protection
Meaning: System pressure is too low — often due to refrigerant leaks.
Causes: Refrigerant leak or poor compressor operation.
Fix: Contact a qualified technician to locate and fix leaks, then recharge the system.
E4 – High Discharge Temperature Protection
Meaning: Compressor discharge line is too hot.
Causes: Overheating due to blocked airflow or dirty coils.
Fix: Clean coils and check external unit clearance.
E5 – Over-Current Protection
Meaning: The AC detects electrical overload.
Causes: Voltage fluctuation, wiring issues, or unstable power supply.
Fix: Inspect electrical connections and supply; consult an electrician or technician.
E6 – Communication Error (Indoor ↔ Outdoor)
Meaning: Indoor and outdoor units are not communicating properly.
Causes: Loose wiring or PCB (board) issue.
Fix: Check communication wires and connectors; a tech may need to replace boards if faulty.
E7 – Mode Conflict
Meaning: Indoor and outdoor units are set to conflicting modes.
Causes: Different modes selected on remote vs. main unit.
Fix: Set both units to the same operating mode — Cool/Heat/Fan.
E8- Indoor Fan or High-Temperature Issue
Meaning: The unit encounters a fan motor or overheating problem.
Causes: Blocked fan, dirty blades, or motor issue.
Fix: Clean fan and check motor operation; call service if motor fails.
E9 – Full Water/Water Flow Protection
Meaning: Drainage or water flow problem.
Causes: Blocked drain pipe or water buildup.
Fix: Clear the drain line and inspect drainage system.
F-Series Sensor Errors (e.g., F1, F2, F3, F4, F5)
Meaning: Sensor circuit issues (open/short).
Causes: Faulty temperature sensors or wiring.
Fix: Sensors often need professional diagnosis and replacement.
Why Gree AC Displays Error Codes?
Error codes help protect your AC from damage and unsafe conditions such as overpressure, overheating, refrigerant issues, or electrical faults. They act as the AC’s early warning system — giving you time to take action before major breakdowns occur.
Quick Troubleshooting Tips:
- Always turn off the AC power and restart after a few minutes — sometimes the error clears.
- Clean filters and outdoor unit regularly to prevent common faults.
- For electrical and refrigerant issues, contact a qualified technician.
Final Notes
Remember, while some error codes can be resolved with simple cleaning or resets, others point to deeper issues that require expert repair services. For that, RepairCity is the perfect solution. Regular maintenance and inspection not only prevent error codes but extend the life of your Gree AC.