I cant turn off my shut off valve that goes to my

Combi-boiler-turn hot water tap on/off and the heating stops for ...

singletrackworld.com/.../combi-boiler-turn-hot-water-tap-onoff-and-the-...

Combi-boiler-turn hot water tap on/off and the heating stops for 20secs ... hot watertakes priority over central heating so when you run the hot tap, heating is ... Yeah onmy worcester combi there is a diverter valve - it feeds either the heating or ...

My central heating works but I have no hot water - 24'7 ...

https://www.247homerescue.co.uk/my-central-heating-works-but-i-have-...

Diverter valves switch heat between the hot water and the central heating. When youturn your hot tap on, the diverter valve temporarily shuts off the water supply ...

Does your boiler keep switching itself off? Here's why ...

www.dhs-uk.com/does-your-boiler-keep-switching-itself-off-heres-why/

Jul 7, 2015 - ... Bathroom Suites, - Showers, - Wet Rooms, - Taps and Accessories, Information and ... Low water pressure can cause your boiler to turn itself off. ... boiler is not turning off, you aren't getting the amount of hot water you require. ... If there is air in your central heating system, then your boiler may shut down.

If this is in a RV the propane monitoring valve may require more gas flow to turn on than the water heater requires. A central heating system requires substantial gas flow so when the monitoring valve opens to fire the central heating, there is enough gas flow to also fire the water heater.

if you can turn off the hw and ch off , to the off postion and it shuts off then the acl lifestyle could needreplacing mine did the same on ch only so changed mine , or check the divtervalve is working and not stuck in the open postion , try turning hw on and off only then the ch see if valve works

try checking the gas pressure might be to high or low thats what i would check first

As far as a shut off valve on to the water heater, if there is one you should be able to see it on the water line going to the heater. This is not common in mobile homes. If there is not one I would strongly recomend you install one when you replace the heater. If it is going to be a while before you replace the heater you might consider draining it and cutting into the inlet line and installing a shut off valve, so you can turn the house water back on. I hope this helps.

there may be air in the system try to bleed the system of air and see if that resolves the problem.

the thermo couple thing that pilot heats up is not staying in flame if knob is broke you may be able to heatup manualy to get gas valve to open some will wome wont

it sounds like your shut off valve might be bad even though it turns on and off by turing it doesn't mean that the washer is not stuck to the seat and not opening, try replacing the valve

is this a baxi 105? chances are you diaphragm has gone on your diverter valve. Or your diverter valve.
Do you will initially get a liitle hot water if your heating is on?