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Temporary lux activation

Temporary hot water boost activated

Nibe · F1155 Heat Pumps

What does Temporary lux activation mean?

An external contact can be used to activate the 'temporary lux' hot water function for a set duration.

Common Causes

  • External contact connected and closed
  • Function configured in menu 5.4

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if an external contact is connected to the designated input on terminal block X6 (AA3).

  2. 2

    Ensure the function is selected and configured in menu 5.4.

  3. 3

    The hot water function is activated for the duration the contact remains connected.

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 runningAlarm bell iconAlarm bell icon on display — An alarm condition is active
Source: Nibe F1155 Heat Pumps
Open Manual (Page 25)Search more codes in this manual