HIT

Hitachi 06

Critical

Set Free Sigma / IVX — Voltage drop due to excessively low or high voltage in the outdoor unit.

Hitachi 06: Voltage drop due to excessively low or high voltage in the outdoor unit. This fault typically halts operation and needs immediate attention.

Possible causes

Line voltage outside allowable limits.

Check steps

Measure line voltage, contact utility if needed.

Affected parts

Netzteil-Platine
Sicherungen
Spannungsregler

Safety note

Isolate power before testing.

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.

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Related fault codes

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