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. 1

    Check the outdoor fan motor for physical obstructions or damage to the blades or motor housing.

  2. 2

    Measure the resistance of the fan motor windings to identify open or short circuits.

  3. 3

    Verify the power supply voltage to the DC outdoor fan motor and its control signals.

Browse all codes in this manual (78)
Verified technical data. Last updated: March 2026

Related Faults

Source: Mitsubishi Electric FR-D700 Inverter