I moved into a 1980's house a few weeks ago. The house has a Ideal Heat 30 boiler in kitchen with cylinder in airing cupboard and tanks in loft.
Under boiler there are 3 motorized valves, 2 for heating and 1 for HW.
The 2 heating valves are wired together into stat (as there arent seperate zones for heating).
When running heating, once turned off, heated water is bing pushed up vent pipe, into expansion tank, causing it to oveerfill and pour out of overflow. This happens everytime, a few minutes after heating turned off.
This then causes air to be drawn into radiators meaning daily bleeding!
I have checked the wall thermostat (its a new Tado I had fitted by qualified plumber) and that turns boiler on and off effectiovely for hot water and heating.
I have checked cylinder stat and that turns boiler off too as it should.
I have had 3 plumbers / heating engineers out so far and they all have no idea what is going on and are relulctant to commit to anything.
I have 2 children, 4 and 18 months - the 18 month old sleeps under the expansion tank, so I cannot put heating on as it will be a risk! Its going to get cold soon and I need fixing - does anyone have any ideas of where to look or how to start? Any guidance will be appreciated. I have contacted 10+ other trades but they are too busy until November or New Year!
Under boiler there are 3 motorized valves, 2 for heating and 1 for HW.
The 2 heating valves are wired together into stat (as there arent seperate zones for heating).
When running heating, once turned off, heated water is bing pushed up vent pipe, into expansion tank, causing it to oveerfill and pour out of overflow. This happens everytime, a few minutes after heating turned off.
This then causes air to be drawn into radiators meaning daily bleeding!
I have checked the wall thermostat (its a new Tado I had fitted by qualified plumber) and that turns boiler on and off effectiovely for hot water and heating.
I have checked cylinder stat and that turns boiler off too as it should.
I have had 3 plumbers / heating engineers out so far and they all have no idea what is going on and are relulctant to commit to anything.
I have 2 children, 4 and 18 months - the 18 month old sleeps under the expansion tank, so I cannot put heating on as it will be a risk! Its going to get cold soon and I need fixing - does anyone have any ideas of where to look or how to start? Any guidance will be appreciated. I have contacted 10+ other trades but they are too busy until November or New Year!
