Fault Codes / NIBE / 3
F-Serie — Sensor fault BT3 (heating return). Compressor blocked during DHW.
NIBE 3: Sensor fault BT3 (heating return). Compressor blocked during DHW. This fault noticeably affects operation.
Source: NIBE resmi servis kılavuzu — NIBE Alarm List v1747-1, Nr.3: 'Sensor fault BT3 | Sensor not connected/defective (heating medium return) | Compressor is blocked when hot water loading.' (p.1) — matches app's 'BT3 (Heizmedium Rücklauf). Verdichter beim WW-Laden gesperrt.'
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
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