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No Display Interference

Operational interference without a specific display message

NIBE · SMO S40 Control Module

What does No Display Interference mean?

The system is experiencing general operational issues, but the display does not show any specific alarm messages or instructions. This points to fundamental electrical supply problems.

Common Causes

  • Blown group or main fuses for the installation
  • Tripped earth circuit breaker in the building
  • Incorrect settings for the load monitor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the installation’s group and main fuses in your electrical panel and replace any blown fuses.

  2. 2

    Check the building's earth circuit breaker (RCD/GFCI) and reset it if it has tripped.

  3. 3

    Verify that the load monitor settings are correctly configured for your system's electrical supply.

Browse all codes in this manual (8)
Verified technical data. Last updated: April 2026

Related Faults

Installation pump no contactAlarm: Installation pump has no contact with the supply temperature sensorLow/No Hot WaterLow hot water temperature or a complete lack of hot waterNo Outdoor Temp Sensor ContactDisplay message: No contact with outdoor temperature sensor
Source: NIBE SMO S40 Control Module
Open Manual (Page 61)Search more codes in this manual