E48

DC Outdoor Fan Motor Fault

Mitsubishi Electric · Mitsubishi 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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

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

Source: Mitsubishi FR-D700 Inverter
Open Manual (Page 5)