Central Heating

Re: Central heating only works when hot water is switched on

Anonymous user 01/03/2024 - 2.48 PM

I have a Megaflow system with potterton profile boiler and Honeywell 9400 programmer.Up to now it was working fine .After draining the system to add fresh inhibitor , the central heating now only works when I turn on the hot water switch.The system was plumbed with separate motorised valve for hot water and separate for central heating,If I switch on the central heating switch the central heating does not work but if I switch on hot water switch the central heating works until the water reaches the required temperature then the heating goes off also.Any idea of what to do ,any advice will be highly appreciated. Once the water temperature goes lower from required temperature, the heating comes back on from hot water switch. Cass. Any other answers for the above problem. New answers will be highly appreciated