Gree Error Code E3: Low Pressure Protection
Warning: Your Gree HVAC system has detected low pressure, which could lead to system damage if not addressed.
How to Fix Gree Code E3
- Check and replace your air filter if it's dirty
- Inspect the suction line for any blockages
- If you suspect a refrigerant leak, do not attempt to fix it yourself. Contact a professional immediately
How to Reset Gree Code E3
- 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.
What does E3 mean?
The E3 error code on your Gree HVAC system indicates that the low pressure switch has been activated. This switch is designed to protect your system from operating at pressures that are too low, which can cause damage to the compressor and other components. The most common causes for low pressure are refrigerant leaks, clogged filters, or issues with the expansion valve.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Low pressure switch | Gree 3633602000 | — |
| Expansion valve | Gree 3633601000 | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| E1 | High Pressure Protection | Warning |
| E2 | Anti-Freeze 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 |
| F1 | Indoor Ambient Sensor Failure | Warning |