Fault Codes / Hitachi / 22

HIT

Hitachi 22

Medium

Set Free Sigma / IVX — Outdoor air thermistor fault.

Hitachi 22: Outdoor air thermistor fault. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Sensor open/short.

Check steps

Check outdoor air thermistor.

Affected parts

Außenluft-Thermistor

Safety note

230V — isolate power.

Source: Hitachi Set Free Sigma Service Manual

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

Look up in Enthalio →

Related fault codes

High pressure protection activated.02 Indoor/outdoor transmission abnormality03 Power supply phase abnormality (open/reverse)05 Low temperature protection in heating (LP).07 High temperature protection in heating (HP).08 Indoor air thermistor fault.11