Bosch 1051

Medium

Compress — No communication with external room temperature sensor.

Bosch 1051: No communication with external room temperature sensor. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Room sensor disconnected/faulty / EMS line.

Check steps

Check room sensor & EMS wiring.
Check configuration.

Affected parts

Raumtemperaturfühler
EMS-Leitung

Safety note

Low voltage — work carefully.

Source: Bosch/IVT/Buderus Compress Wärmepumpe Alarm-Tabelle (lvisawo.fi/jseducation.se resmi servis kılavuzu aynası) — Buderus EMS Servicehandbuch (Fehlermeldungen-6720809288.pdf), p. table row 'A61 1051 14': 'Keine Kommunikation Modul externer Raumtemperaturfühler' (Heizkreis 1); confirmed present in document text.

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

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