Fault Codes / Mitsubishi Electric / 4225

Mitsubishi Electric 4225

Critical

City Multi — Control power-supply fault (fan board).

Mitsubishi Electric 4225: Control power-supply fault (fan board). This fault typically halts operation and needs immediate attention.

Possible causes

Fan board supply out of range.
Fan board faulty.

Check steps

Check supply voltage (≥342 V) & fan board.

Affected parts

Fan-Board

Safety note

High voltage! Let capacitors discharge.

Source: Mitsubishi Electric resmi servis kılavuzu — CITY MULTI PDF s.3: '4220/4225/4226 — ... Control power-supply fault / Low bus voltage at startup ... In the case of 4225, 4226: Fan board'.

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

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