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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

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: April 2026

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Source: Mitsubishi Electric FR-D700 Inverter
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