E34

Abnormally Low Current / L3 Open Phase

Mitsubishi Electric · Mitsubishi FR-D700 Inverter

What does E34 mean?

Abnormally low current or no current has been detected by the current transformer (CT) on L3. This indicates an open phase condition detected at L3 (secondary side of contactor), which can prevent the compressor from operating correctly.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Verify the connections and operation of the contactor, especially on the secondary side for L3, checking for burned contacts.

Source: Mitsubishi FR-D700 Inverter
Open Manual (Page 3)