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7

sensor fault BT7 — Hot water peak sensor not connected or defective

NIBE · Heat Pumps

What does 7 mean?

The BT7 sensor, which monitors hot water peak conditions, is not connected or defective. This alarm usually resets automatically.

Common Causes

  • sensor connection is loose or disconnected.
  • The BT7 sensor is faulty.
  • A temporary electrical glitch affecting the sensor.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Allow some time for the system to automatically reset the alarm.

  2. 2

    If the alarm does not clear, perform a full power cycle of the Heat Pump at the main breaker.

  3. 3

    Verify the physical connections to the BT7 sensor are secure and undamaged.

  4. 4

    If the alarm frequently recurs, consult a qualified technician.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

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Source: NIBE Heat Pumps
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