On Tuesday, 27 December 2016 19:44:03 UTC, Nicola wrote:
replying to Alan, Nicola wrote:
Thanks guys. I've got a plumber coming tomorrow just making kids put dressing
gowns on for now hahaha
Boiler fires up when waters on but not with heating I've turned it off and
tried firing it back up. My husband thinks it's a valve

It does sound like loss of pressure on the primary circuit. If so it can be got going again by adding some water. A picture of the underneath & front of the boiler could help.


NT