Fault Codes / Hitachi / 21

HIT

Hitachi 21

High

Set Free Sigma / IVX — Outdoor high pressure sensor fault.

Hitachi 21: Outdoor high pressure sensor fault. This fault noticeably affects operation.

Possible causes

Sensor open/short / wiring.

Check steps

Cross-check HP sensor with gauge.

Affected parts

Hochdrucksensor

Safety note

High-pressure side & follow F-Gas.

Source: Hitachi Set Free Sigma Service Manual

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

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