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Sens flt:BT11 111

Sens flt:BT11 111 — Brine out sensor fault (continuous)

Nibe · Ground Source Heat Pumps

What does Sens flt:BT11 111 mean?

This B alarm points to a continuous fault with the brine out sensor, potentially caused by open/short circuits or a defective sensor. The compressor might be blocked.

Common Causes

  • Open-circuit or short-circuit on sensor input
  • Defective brine out sensor
  • Continuous contact issue with the sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Confirm the brine out sensor connections are secure.

  2. 2

    Check the sensor for any signs of damage.

  3. 3

    This alarm generally resets automatically upon fixing the cause.

  4. 4

    If the service technician symbol remains displayed, contact your installer.

Browse all codes in this manual (49)
Verified technical data. Last updated: April 2026

Related Faults

Alarm bell in displayAlarm bell symbol in display — Malfunction detectedAlarm no. 54Alarm no. 54 — Motor protection breaker trippedAlarm numbers 70-99Alarm numbers 70-99 — Communication interrupted
Source: Nibe Ground Source Heat Pumps
Open Manual (Page 50)Search more codes in this manual