When the room has reached temperature and boiler clicks off or when water reached temperature and boiler clicks off, the boiler makes a clicking noise/surging noise, then when temperature in room calls for heat boiler fires up fine and runs ok. Any ideas on clicking noise? Also want to put it under ...
When I select 'ch only' on my control unit the lever on the three port valve moves over to 'H' and the pump switches on/off according to the thermostat telling the pump when the room has reached/not reached temperature. When I select 'hw only' on my control unit (central heating off) the lever on th...
