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When using hot water heating comes on as well?

I have a mains 24he combo boiler, when using hot water heating comes on as well but it wasn't set for heating to be on. What part needs changing please.

Henry, October 2014

home Fix label Heating label_important Home Heating Systems

Fix Fault - Heating

home label Heating label_important Home Heating Systems

Fix Fault - Heating

home label Heating label_important Home Heating Systems

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home Fix label Heating label_important Home Heating Systems

When using hot water heating comes on as well?

I can answer this question...

When using hot water heating comes on as well?

I can answer this question ...

When using hot water heating comes on as well?

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