25 Apr 21
Heating not working in the house. Hot water for the shower/tap works and boiler fires up for this. The central heating system is 'calling' for the boiler to fire up but it doesn't. If the hot water is left to run, boiler fires up and this also then heats the central heating (but it won't work without hot water being left to run). We have piped hot-water underfloor heating which is polypipe system and this is linked to our boiler/megaflow system. Need help to solve the problem please and get system to work reliably!