HIT

Hitachi 54

Critical

Set Free Sigma / IVX — Abnormality of the inverter fin (heat sink) temperature.

Hitachi 54: Abnormality of the inverter fin (heat sink) temperature. This fault typically halts operation and needs immediate attention.

Possible causes

Isolate power before cleaning.

Source: Hitachi RAS-2-HVNP VRF Service Manual, "Alarm Codes For The Outdoor And Indoor Units" p.207 (ManualsLib scan of official manual)

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