Installation pump has no contact with supply temperature sensor — Additional heat blocked

What does Installation pump no contact mean?

This specific alarm indicates that the installation pump cannot communicate with the supply temperature sensor. As a result, additional heating is blocked, and the system switches to an alarm operation, which may reduce comfort.

• Loose or faulty connection to the supply temperature sensor.
• Damaged supply temperature sensor.
• Problem with the installation pump's communication circuit.

Click steps to track your progress.

1. 1

   Check the display for this specific alarm message.

2. 2

   Select "Reset alarm and try again" on the display. If the alarm clears, the issue might have been temporary.

3. 3

   If the alarm persists, select "Start auxiliary mode" to ensure some heat production, but note this is a temporary measure and the underlying issue remains.

4. 4

   Contact your installer as this issue involves internal components and may require technical inspection.