E48
DC Outdoor Fan Motor Fault
Mitsubishi Electric · FR-D700 Inverter
What does E48 mean?
There is a fault with the DC outdoor fan motor, which could prevent proper heat exchange in the outdoor unit. This leads to inefficient operation and potential system overheating.
Common Causes
- Outdoor fan motor failure due to mechanical obstruction.
- Faulty outdoor fan motor winding or bearing.
- Interruption in wiring to the outdoor fan motor.
- Overload condition on the outdoor fan motor circuit.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check the outdoor fan motor for physical obstructions or damage to the blades or motor housing.
- 2
Measure the resistance of the fan motor windings to identify open or short circuits.
- 3
Verify the power supply voltage to the DC outdoor fan motor and its control signals.
Verified technical data. Last updated: March 2026
Related Faults
Source: Mitsubishi Electric FR-D700 Inverter