E7
GE
Mode Control or Reversing Valve / Sensor Error (Heat Pump Models)
GE air conditioner shows E7 and may not operate in certain modes or may shut down
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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
Faulty mode sensor or thermistor, Reversing valve coil failure on heat pump models, Wiring harness damage, Main control board logic fault
How to Fix / Troubleshooting
Safety: Unplug the unit. Heat pump models contain high-pressure refrigerant; do not open sealed system components.
Procedure:
- Reset: Disconnect power for 10 minutes and restore. If E7 returns, continue.
- Check mode operation: Try switching between COOL, HEAT (if equipped), and FAN ONLY. Note which modes trigger E7.
- Access control and sensor wiring: Remove front cover and control panel. Inspect wiring to any additional sensors used for heat mode (e.g., discharge air sensor).
- Inspect reversing valve coil (heat pump): From the rear with cabinet removed, locate the reversing valve and its solenoid coil. Check for loose connectors or burnt coil. Replace the reversing valve coil if open or burnt (refrigerant circuit remains sealed).
- Sensor testing: Test any additional thermistors associated with heat mode per GE specs and replace if out of range.
- Control board: If hardware checks out, replace the main control board as the likely cause of E7.
Warning: Do not attempt to open or braze refrigerant lines; this must be done by a licensed HVAC technician.
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Repair Difficulty
Hard
4/5
Required Part
Reversing Valve Coil
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