02

Undervoltage Error

Mitsubishi Electric · Mitsubishi PUZ-HA30-36NHA4 Outdoor Unit

What does 02 mean?

The power circuit board has detected an undervoltage condition in the input power supply. This can lead to improper operation, instability, or failure of the system's components, particularly the compressor, due to insufficient power.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect the power circuit board for any visible damage or component failure.

Source: Mitsubishi PUZ-HA30-36NHA4 Outdoor Unit
Open Manual (Page 68)