CodeRegistry
Brands
  1. Home
  2. Nibe
  3. F1155 Heat Pumps
  4. Alarm bell icon
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

Alarm bell icon

Alarm bell icon on display — An alarm condition is active

Nibe · F1155 Heat Pumps

What does Alarm bell icon mean?

This symbol appears in the information window when a malfunction has occurred. It signifies that the heat pump has detected an issue that needs attention.

Common Causes

  • A detected malfunction requiring user intervention.
  • An internal error.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Note the specific alarm message shown on the display.

  2. 2

    Navigate to the alarm menu to view details and attempt to reset the alarm.

  3. 3

    If the alarm persists after resetting, refer to the troubleshooting guide for specific error codes.

  4. 4

    Consider activating 'aid mode' for temporary heating if available.

Browse all codes in this manual (27)
Verified technical data. Last updated: April 2026

Related Faults

AUX output configurationAUX output configured for specific functionAdditional heat blocked symbolAdditional heat blocked symbol — Immersion heater is not runningBrine level sensorBrine level monitored by NV 10 accessory
Source: Nibe F1155 Heat Pumps
Open Manual (Page 65)Search more codes in this manual