EC
GE
Refrigerant System Protection / Low Refrigerant or Sensor Error
GE air conditioner displays EC and stops cooling, fan may still run
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Low refrigerant charge due to leak, Blocked or extremely dirty coils causing abnormal pressures, Faulty pressure sensor or temperature sensor on sealed system, Main control board misinterpreting sensor data
How to Fix / Troubleshooting
Safety: Unplug the unit. Refrigerant is under high pressure; do not attempt to open the sealed system.
Basic homeowner checks:
- Clean coils and filter: Ensure both evaporator and condenser coils are clean and unobstructed. Clean the air filter.
- Check fan operation: Confirm both indoor and outdoor fans run when cooling is selected.
- Ambient conditions: Extremely low or high outdoor temperatures can trigger EC on some models; operate within GE’s specified temperature range.
If EC persists:
- Do not bypass safety: EC often indicates a refrigerant or pressure issue. Bypassing it can damage the compressor.
- Professional service: A licensed HVAC technician should check refrigerant pressures, locate leaks, and test any pressure or temperature sensors on the sealed system. The technician may replace the pressure sensor or recharge the system if a repairable leak is found.
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Repair Difficulty
Professional Required
5/5
Required Part
Sealed System (Refrigerant Circuit) / Pressure Sensor
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