Gree Error Code E2: Anti-Freeze Protection
Warning: Your Gree air conditioner has detected a potential issue with its anti-freeze protection system. It's safe to operate, but you should schedule a professional repair soon.
How to Fix Gree Code E2
- Check if the outdoor unit is level. An improperly leveled unit can cause temperature sensor issues.
- Ensure that the outdoor unit is clean and free of debris, which could interfere with temperature readings.
- If the error persists, contact a professional HVAC technician for a thorough diagnosis and repair.
How to Reset Gree Code E2
- Turn off the unit using the remote control or wall controller.
- Turn off the circuit breaker for the outdoor and indoor units. Wait 60 seconds.
- Restore power at the breaker.
- Turn the unit on with the remote control. If the error returns, the fault needs professional diagnosis.
Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.
What Does Gree Error Code E2 Mean?
The E2 error code on your Gree air conditioner indicates that the system has detected a fault in the anti-freeze protection circuit. This circuit is designed to prevent the outdoor unit from operating when the temperature drops below freezing to protect the compressor. When this error occurs, the system may not function properly in cold weather, but it should still work fine in normal temperatures.
Common Causes
- A faulty temperature sensor
- A problem with the anti-freeze protection circuit board
- A wiring issue in the control circuit
- A malfunctioning compressor pressure switch
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Outdoor temperature is below 40°F (4°C) | Measure the voltage at the temperature sensor's terminals | 0-5V DC, proportional to the temperature |
| Temperature sensor is functioning correctly | Inspect the anti-freeze protection circuit board for any visible damage or signs of overheating | No visible damage or signs of overheating |
Applicable Gree Models
- G-Series(electric)
- NC Series(electric)
- NCA(electric)
- NCB(electric)
- NCB Series(electric)
- NCG(gas)
- NCM(electric)
- NCQ(electric)
- NCV(electric)
- NG Series(gas)
- NPC(electric)
- NPE(electric)
- NPE Series(electric)
- NSC Series(electric)
- NSE(electric)
Replacement Parts
| Part | OEM Number | Est. Cost | Where to Buy |
|---|---|---|---|
| Temperature Sensor | Gree 3702125000 | — | Find Part |
| Anti-Freeze Protection Circuit Board | Gree 3702125001 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Gree model families as E2.
| Code | Description | Severity |
|---|---|---|
| C5 | Jumper/PCB Malfunction | Warning |
| E1 | High Pressure Protection | Warning |
| E3 | Low Pressure Protection | Warning |
| E4 | Compressor Discharge Temp Protection | Warning |
| E5 | Over-Current Protection | Warning |
| E6 | Communication Error Indoor/Outdoor | Warning |
| E7 | Mode Conflict | Warning |
| E8 | Anti-High Temperature Protection | Warning |
| E9 | Cold Air Prevention | Warning |
| F0 | Blower Temp Sensor Malfunction | Warning |