E49

Low Pressure / Voltage Detected / Inverter PCB Fault

Mitsubishi Electric · Mitsubishi FR-D700 Inverter

What does E49 mean?

This fault indicates a low pressure condition, low voltage detected within the system, or an inverter PCB fault. The manual lists these three distinct sub-causes for E49, any of which can lead to system malfunction.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect the inverter PCB for visible signs of damage, burnt components, or loose connections.

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