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Lo Bri out

Lo Bri out — Low outgoing brine temperature

Nibe · Ground Source Heat Pumps

What does Lo Bri out mean?

This alarm indicates bad circulation in the brine system, where the temperature of the outgoing brine (BT11) drops below the set minimum temperature and the alarm is set to permanent. This blocks the compressor.

Common Causes

  • Low brine pump operation
  • Brine system not properly vented
  • Low freezing point of the brine

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the brine pump is running correctly.

  2. 2

    Ensure the brine system has been properly vented.

  3. 3

    Verify the brine's freezing point is adequate.

  4. 4

    Contact a service technician if issues persist.

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 48)Search more codes in this manual