Heating comes on when running hot water?

[scottster]

Hi
I have a combi boiler which i believe runs a "Sealed" (as it has a filling loop?) CH system. I have no hot water tank. When i take a shower the radiators all get hot. Any ideas why? the boiler is set to Hot water only.

Cheers

 

[EliteHeat]

Do a search - been asked and answered at least a million times before

 

[gas4you]

Diverter stuck. As elite says, search for stuck diverter valve or something similar.

 

[Agile]

Hi
I have a combi boiler which i believe runs a "Sealed" (as it has a filling loop?) CH system. I have no hot water tank. When i take a shower the radiators all get hot. Any ideas why? the boiler is set to Hot water only.

If you read a few questions and answers here you would have seen that the first thing any boiler would want to know is what make and model!

Like cars boilers are not all the same ! There is little similarity between a Ford Pilot and a Citroen L15 !

Tony

 

[scottster]

Thanks, couldn't find anything whilst searching, however searching for stuck divertor valve came up trumps. out of interest the boiler is a vaillant turbomax 242 e.

cheers

 

[weareleeds]

Definetly diverter valve you will probably have one of the aerlier ones (around 5-6 years old) with the small holes drilled into the body