Heating won't go off !

meana

Hi all,
We've just discovered that all (except 1) of our radiators are hot when the boiler is set to heating the Water (we put our boiling hot house down to the heatwave we're having at the moment)..

We have a Glow-worm Economy boiler..
anyone got any ideas?

thanks.
phil

pinkteapot

One possibility:

When we had this problem, our three-way valve needed replacing. It's a valve that controls whether the boiler heats the hot water, radiators or both. When old, they can fur up and start sticking. I seem to remember that the valve itself cost about £60. I can't remember what we paid for fitting as our plumber did it at the same time as some other jobs.

I'm not sure if all types of heating system have three-way valves though.

ariba10

As a temporary measure, turn the rads off at their valves.

As stated it is probably the Diverter Valve.

meana

thanks...
I've a guy coming to fit our cooker on Friday so i'll get them to take a proper look..

budgetdiyer

My bet is on diverter valve too.

poppellerant

meana wrote: »

thanks...
I've a guy coming to fit our cooker on Friday so i'll get them to take a proper look..

I would hate to be waiting until Friday with my heating on in this weather. :eek::eek:

meana

thankfully it only comes on twice a day with the Water (for baths and showers)..
but i'm going to go and turn off all the radiators tonight.

Fed_Up_Tradesman

As others have said it's probably your 3 way diverter valve that's stuck or is letting by or has a faulty motor.

Motors for certain valves can be replaced without touching your water but it's not always the best option if your valve is old, even if the motor is gone.

Have you got something that looks like this, probably in your airing cupboard?

http://www.plumbworld.co.uk/honeywell-v4073a-3-port-763-1367

If it is the diverter valve , it will mean a drain down, replace the part, re-fill + inhibitor, bleed & test.

No more that 2 hours work for someone who knows what they're doing.

keystone

Fed_Up_Tradesman wrote: »

If it is the diverter valve , it will mean a drain down, replace the part, re-fill + inhibitor, bleed & test.

No it won't if its only the head and OP can change that themselves easily.

OP if its one like has been described then take the head off and see if youi can operate the valve manually if you can easily turn then the head is suspecxt but if you can turn it then just turn it round to the point where the only DHW circuit is in operation and leave it like that if you don't fancy doing anything else 'til your man comes. That way you will save 3 days worth of gas if nothing else.

If you fancy having a pop at doing it yourself then come back here and we can talk you through it.

Cheers

Fed_Up_Tradesman

Did you read my post ?

keystone

Yes of course but the advice that it will need a whole new valve is neither necessarily correct (even with a rider) nor is it particularly MSE.

Cheers