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Brian, Plumber
Category: UK Plumbing
Satisfied Customers: 841
Experience:  16 yrs. experience as plumber, including full bathroom and kitchen installations.
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I have a problem with my sime combi boiler heating works

Customer Question

hi i have a problem with my sime combi boiler heating works fine but hot water will not heat without heating being on ..the water in the shower is now not getting hot
Submitted: 1 year ago.
Category: UK Plumbing
Expert:  Brian replied 1 year ago.

Hi this sounds like the diverter valve is not working properly. its opening but not enough to push the switch and start the boiler. If the boiler is hot already then it will allow that hot water through the plate heat exchanger to warm up your DHW.

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