Code 252 - No speed feedback from heater pump

What does 252 mean?

The boiler is not receiving speed feedback from the heater pump. This indicates a communication or functional issue with the pump.

• Heating pump not turned on or not operating correctly
• Faulty wiring or connection to the pump

Click steps to track your progress.

1. 1

   Ensure the heating pump is turned on and operating.

2. 2

   Check the wiring and plug connections of the heating pump.

3. 3

   If no feedback is restored, the pump may need to be replaced by a qualified technician.