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901

Info alarm 901 — QN10 placement mismatch

NIBE · SMO 20 Control Module

What does 901 mean?

This alarm indicates that the placement of component QN10 does not align with other system settings. The system will automatically reset QN10 placement to ensure compatibility.

Common Causes

  • Incorrect configuration of QN10 component placement.
  • Settings in the system conflicting with QN10's detected position.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the system's display for alarm 901 and any accompanying information.

  2. 2

    Review the settings related to QN10 placement in the SMO 20 control module's menus.

  3. 3

    Verify the physical installation and connections of component QN10 according to the installation guide.

Browse all codes in this manual (54)
Verified technical data. Last updated: April 2026

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Source: NIBE SMO 20 Control Module
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