F2120 stops — Outdoor unit stops during "silent mode"

What does F2120 stops during "silent mode" mean?

The F2120 outdoor unit would unexpectedly stop operating while 'silent mode' was active. This disrupts heating or cooling and defeats the purpose of the silent mode, indicating a software or operational conflict.

• Software bug related to silent mode operation in the F2120.
• Excessive limitations placed on the F2120 during silent mode (older firmware).
• Power fluctuations affecting the F2120 during restricted operation.

Click steps to track your progress.

1. 1

   Update the NIBE SMO 20 firmware to version v9586R2 or later.

2. 2

   Temporarily deactivate 'silent mode' in the system settings to see if the F2120 operates normally.

3. 3

   Check the power supply to the F2120 outdoor unit for stability.

4. 4

   If the problem continues after the update, contact service personnel for inspection.