NIBE SMO S40 Control Module

This alarm indicates that the system's installation pump has lost communication with the supply temperature sensor. When this occurs, the additional heat function is blocked, and the system enters alarm operation, which may result in reduced comfort.

The system is failing to provide adequate hot water or none at all. This can be due to various settings within the control module, external valve positions, or exceptionally high hot water usage.

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.

The NIBE SMO S40 system cannot detect the outdoor temperature sensor. This will cause the calculated supply temperature to be set to a minimum value, which may affect heating performance.

The NIBE SMO S40 system is experiencing problems, but no specific alarm message or code appears on the display. This requires general checks of the power supply and system settings.

The NIBE SMO S40 has detected a malfunction that it cannot automatically resolve. The status lamp will illuminate with a steady red light, and the display's smartguide will provide specific information about the alarm.

Certain NIBE air/water Heat Pumps, especially older models (pre-2019), may require a circuit board software update to function correctly with the SMO S40 control module. Failure to update can lead to system communication issues or malfunctions.

An incorrectly dimensioned pipe system, particularly if pipe diameters are too small or the system cannot maintain the minimum recommended flow rates (especially for defrosting), can cause damage to the product and lead to operational malfunctions.