- Reaction score
- 5,848
The pump may be running, but if it's pumping into a closed off pipe it will not be moving any water.Yes I can hear circadian and the pump comes on all the time for up to an hour when heating is off.
Is there a pressure sensitive bypass valve (or even a partly closed gate valve connected between flow and return before the zone valve, or is there a towel rail that heats up when the frost protection is on?