I have a problem with my glow worm betacom 24c boiler

[nohope]

I have a problem with my glow worm betacom 24c boiler. The heating and hot water works fine.. However when I run the hot water it works fine but when I turn off the hot water (tap) the boiler stays firers upped.! Sometimes for hours.
Can you help please

 

[M.Joshi]

Is your hot water fed from a storage tank or directly from the boiler? If directly from the boiler, it's possible, you may have a slightly leaky hot water tap (somewhere) causing the boiler to remain on.

 

[Millsy 82]

You may have a warm start on your boiler which heats up the plate heat ex. Are your radiators getting hot when its firing up? Is your hot water as hot as it usually is? Let your boiler cool down then turn on hot water check the heating flow and returns are they getting hot when the taps are on?

 

[jtsplumbing]

Not the best boiler that Glow-Worm made, it is a combi that you are asking about ? or do you have a hot water tank, more information on type of system please .

 

[nohope]

Thanks Guy
In response to your questions
It does not have a separate water tank
It is a combi.
The rads do not heat up and also the flow also does not heat up when the boiler is firing up.
The firing up is sporadic, sometime it does straight after turning the hot tap off sometimes it could be an hour or so afterwards.

Thanks
Again

 

[aggis]

Hi, turn off the water stop tap, open hot taps to drain. Turn on heating, does it work ? if it does you've got a hot tap dripping or a faulty shower valve. If it doesn't get a GS engineer to look at it.