Fault Codes / Hitachi / b1
Set Free Sigma / IVX — Incorrect unit number setting.
Hitachi b1: Incorrect unit number setting. This fault is usually minor, but points to an underlying cause.
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.
Look up in Enthalio →