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AUX output configuration

AUX output configured for specific function

Nibe · F1155 Heat Pumps

What does AUX output configuration mean?

The AUX output on terminal block X7 can be configured for various functions like buzzer alarm indication or pump control. An accessory card may be needed for multiple simultaneous functions.

Common Causes

  • Accessory card AXC 40 installed (if multiple functions used with buzzer alarm)
  • External device connected to terminal block X7 (AA3)
  • Function selected in menu 5.4

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Identify the function desired for the AUX output (e.g., alarm indication, pump control).

  2. 2

    Connect the external device to the appropriate terminals on AA3:X7.

  3. 3

    Select the correct function in menu 5.4.

  4. 4

    If the buzzer alarm is activated and multiple functions are connected, ensure AXC 40 is installed.

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

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Source: Nibe F1155 Heat Pumps
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