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Sensor flt:BT6

Sensor fault BT6 — Temperature sensor BT6 malfunction

NIBE · F1245PC Heat Pump

What does Sensor flt:BT6 mean?

The heat pump has detected a malfunction with temperature sensor BT6. This sensor is crucial for monitoring specific temperatures within the system, and its fault can impact heating or hot water production.

Common Causes

  • Faulty sensor BT6.
  • Loose electrical connection to sensor BT6.
  • Damaged wiring to sensor BT6.
  • Corrosion at sensor terminals.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Access the 'ALARM LOG' (Menu 3.4) on the display to view details of the sensor fault.

  2. 2

    Navigate to the 'info / action' section for the BT6 alarm (via the general alarm menu) for specific advice.

  3. 3

    Attempt to 'reset alarm' in the display.

  4. 4

    If the fault persists or returns, contact your installer to inspect sensor BT6 and its connections.

  5. 5

    Provide the installer with the exact sensor fault code 'Sensor flt:BT6' for faster service.

Browse all codes in this manual (10)
Verified technical data. Last updated: April 2026

Related Faults

Display not litDisplay not lit / Blank display — No information visible on the heat pumpGreen status lampGreen status lamp — Normal operationLP alarmLP alarm — Low Pressure in the Heating System
Source: NIBE F1245PC Heat Pump
Open Manual (Page 46)Search more codes in this manual