E7
Mitsubishi Electric
Indoor Fan Motor / Fan Feedback Fault
Display shows E7; fan does not run or runs briefly then stops.
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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
Failed DC fan motor, blocked fan wheel, disconnected fan motor harness, faulty fan driver circuit on main PCB
How to Fix / Troubleshooting
Safety: Unplug the unit. Fan blades are sharp; wear gloves.
Steps:
- Check for obstruction: Remove the air filter and look into the fan area. Remove any plastic bags, debris, or ice that may be blocking the fan.
- Spin test: Gently spin the fan wheel by hand. It should rotate freely without grinding. If stiff or noisy, the motor bearings may be failing.
- Access fan motor: Remove the front/rear cover as required to expose the fan motor and wheel. Inspect the motor harness and connector to the main PCB; reseat firmly.
- Voltage check (for technicians): With the unit powered and calling for fan, measure the supply voltage to the fan motor (often DC 12–24 V on Mitsubishi Electric units). If voltage is present but the fan does not run, the motor is faulty.
- Replace motor: Remove the fan wheel (loosen set screw or clip) and unbolt the motor. Install a new indoor fan motor and reassemble.
- If no voltage to motor: The main control PCB fan driver is likely defective and should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Indoor Fan Motor
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