glow worm 240 back boiler gc 44 315 26

[leeagar]

can any one help me i need a manual for the boiler and all manual sites dont have it as it is as old as the hills the problem i have is i cannot get the boiler to come on to full rate it will only stay on pilot i have tried a nother stat from a different boiler to see if it made a difference but it never i have power into the stat and out to the gas valve it is the blue 24v valve but the valve wont open my initial thoughts are the valve but i have no manual to check what readings i should be getting in and out to the valve i have 3v supplied to the valve from the stat if anyone can help it will be appreciated very much i am a gas safe registered engineer but i have had limited experiance with bbu's
thankyou all in advance

 

[Billy Bob Bob]

try here Index

 

[leeagar]

many thanks i have been on that one i think it is older than books them self lol

 

[Billy Bob Bob]

put your meter on the gas valve terminals if its getting 24 volt the valve has failed,if not look at the transformer,stat,wiring

 

[leeagar]

ok thanks your knowledge is appreciated

 

[leeagar]

hi i have been back to the valve today and i have 3v at the gas valve and 3 volt at the stat
any advice would be great

 

[Billy Bob Bob]

has it got a transformer?

 

[leeagar]

yes there is a small one behind the stat

 

[Billy Bob Bob]

would test that may have failed [DLMURL]http://www.gas-spares.co.uk/Catalogue/GLOW-WORM/BBU-and-FIRE-FRONTS/BBU-ONLY-Range/240-bbu[/DLMURL]
problem is theres not much available for that boiler

 

[leeagar]

could i bypass the stat to see if it fires up that would tell me either way do you think

 

[leeagar]

if i put it on hot water only

 

[Billy Bob Bob]

Manuals from Glow-Worm | Find a Boiler Manual | gotoplumbing.co.uk
mi,s for it are on here,but they charge £30 registration,if you have 240 into the transformer you should get 24 out if your only getting 3v it points to the transformer

 

[Billy Bob Bob]

could i bypass the stat to see if it fires up that would tell me either way do you think

no it wont fire up if you put 240 direct to 24 volt components you will fry them

 

[leeagar]

sorry i meant just bypass stat not the transformer
i got the manual last night from another member but its no help at all

 

[Billy Bob Bob]

yes you could bypass the stat to try for faulting purposes

 

[leeagar]

yeah i think that will be my next move if that fails ill go with the transformer they are the only 2 parts out there anyways
you are a good man thankyou for your time it has been a great help