why wont my radiators work?

[Hellcat]

It's unlikely to have a hot water tank if it has a pressure guague. They're almost allways combi only. Some people will have a unvented system but it's a very rare system and almost always used when heating an atic conversion. As said count the pipes. the hot water is almost always 15mm with 22mm central heating and gas and 15mm overflow. Possibly a plastic condensate pipe too.

 

[x Alex x]

ok, it's fixed, by me too, was none of the suggestions.. any guesses? it's inside of the house and not the radiators

 

[Noclu3]

Thermostat or Timer?

 

[x Alex x]

the batteries in the digital temperature setting thing (name? lol) have been in there a good 7/8 year, changed them at around mightnight, woke up sweating

 

[M111CYY]

the batteries in the digital temperature setting thing (name? lol) have been in there a good 7/8 year, changed them at around mightnight, woke up sweating

Ha ha, lmao glad its sorted

 

[x Alex x]

Ha ha, lmao glad its sorted

haha yeh me too i could see my own breath

 

[Trancendental]

woke up sweating

Maybe you're catching flu

My ex had one of them in her Student place. They are the stupidest most infuriating most poorly designed things in the world ever!

You can't even tell if the f'in thing is on or off. and the Boiler has no indicators or clear instructions on it either.

Glad its fixed anyhow

 

[Hellcat]

Thermostat or Timer?

Noclu3 wins then?

Having a working thermostat helps....

 

[cc1]

Sometimes it's the simplist of things staring you in the face...:doh:
Glad it's sorted. Nothing more depressing than freezing your ass off.

 

[Big Black Stilo]

mines not sorted

its a combi boiler that holds pressure when cold, works fine for hot water, but gains pressure too quick when the heatings on, dumping water as pressure to high, and when it cools not enough pressure left for it to start again

any ideas?

all radiators bled and no leaks

 

[cc1]

mines not sorted

its a combi boiler that holds pressure when cold, works fine for hot water, but gains pressure too quick when the heatings on, dumping water as pressure to high, and when it cools not enough pressure left for it to start again

any ideas?

all radiators bled and no leaks

Sounds like the diverter valve isn't changing over.
When demand for hot water is required, the valve isolates the boiler from the heating circuit and relies on the cold water in to take the heat for producing hot water.
After the hot water tap is closed, the valve should revert back to heating mode to remove excess heat from the exchanger.
If yours is building heat too quick, then the valve must be stuck in hot water mode and has no way to disperse the heat as the hot tap isn't running.

 

[Big Black Stilo]

he he

a new theory!

so far the poeple who have looked at it have said either the diaphram in the blow off valve is goosed, or the heat exchanger needs replacing, the system needs de-sludging, system needs descaling, the expansion vessel has lost pressure and needs repressurising, the expansion vessel has lost pressure and needs replacing, its a cheap and nasty boiler, bin it or fix it and take out a british gas policy on it

 

[jug]

thermostat batteries, you noob

 

[cc1]

he he

a new theory!

so far the poeple who have looked at it have said either the diaphram in the blow off valve is goosed, or the heat exchanger needs replacing, the system needs de-sludging, system needs descaling, the expansion vessel has lost pressure and needs repressurising, the expansion vessel has lost pressure and needs replacing, its a cheap and nasty boiler, bin it or fix it and take out a british gas policy on it

1) Blow off valve? No. It would do it when in hot water mode.
2) Heat exchanger? No. There are two. Primary (pick up) and secondary (transfer, only used for hot water).
3) Sludge/de-scale? No. Would effect hot water cycle.
4) Expansion vessel? No Would effect hot water cycle.
5) Replace boiler?.... How old is the boiler and which make/model?

New boilers start at 650 +vat and most are condensing now which mean extra work on the pipes so would cost maybe 1200 all in to replace.
Diverter valve is maybe 180, x200 flush + x100 inhibitor 40, new pump 80,
Labour= 5 hours @ x pound/hr. (All estimates).