S2125 DOES NOT START — Heat Pump is not activating

What does S2125 DOES NOT START mean?

The NIBE S2125 Heat Pump fails to start. This can be due to lack of demand from the indoor module/control module, temperature conditions, minimum time between compressor starts not being met, or an active alarm.

• No demand from the indoor module/control module for heating, cooling, or hot water.
• Compressor blocked due to temperature conditions (waiting for operating range).
• Minimum time between compressor starts has not been reached.
• An alarm has been tripped.

Click steps to track your progress.

1. 1

   Check the indoor module/control module to ensure it is calling for heating, cooling, or hot water.

2. 2

   Wait until the temperature is within the product's normal working range.

3. 3

   Allow at least 30 minutes and then check if the compressor has started.

4. 4

   If an alarm is displayed, follow the instructions provided on the indoor module/control module display.