Carel AFr

High

ir33 / MPXPRO — Antifreeze alarm.

Carel AFr: Antifreeze alarm. This fault noticeably affects operation.

Possible causes

Cabinet temp below antifreeze threshold.

Check steps

Check temperature & antifreeze parameters.

Affected parts

Fühler S1

Safety note

Low voltage — work carefully.

Source: Carel resmi servis kılavuzu — CAREL ir33+ User Manual +030220441 rel.2.5, Tab. 8.a p.59: code 'AFr' = 'antifreeze alarm', flashing, automatic reset. Body text (line 1681): 'ALF defines the temperature value below which the antifreeze alarm AFr is activated, delayed by the time set for parameter AdF. The alarm…

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

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Related fault codes

Control probe fault.rE Probe S1 fault.E1 Probe S2 (evaporator/defrost) fault.E2 Low temperature alarm (too cold).LO High temperature alarm (too warm).HI Data memory alarm (EEPROM) — controller shuts EE