NIBE 1

Medium

F-Serie — Sensor fault BT1 (outdoor temperature).

NIBE 1: Sensor fault BT1 (outdoor temperature). This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

BT1 not connected/defective.

Check steps

Check BT1 sensor & wiring. Auto reset.

Affected parts

Außentemperatur-Fühler BT1

Safety note

Low voltage — work carefully.

Source: NIBE resmi servis kılavuzu — NIBE official 'Alarm overzicht' (Alarm List), November 2018, PDF downloaded from nibe.eu (berkshire-hampshire-heatpumps.co.uk mirror of official NIBE document), page 1: 'Number 1 — Alarm: Sensor fault BT1 — Cause: Sensor not connected/defective — Heat pump operation: Calculated f…

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

Look up in Enthalio →

Related fault codes

High pressure alarm – HP switch tripped repeat50 Compressor phase 1 missing or below 160V.40 Faulty phase sequence.43 Hot gas alarm – discharge temp over limit.55 High pressure alarm from outdoor unit.220 Short compressor runs – stopped 3× shortly aft229