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Radiators turning on when hot water used
Why do my radioators turn on when the hot water tap is turned on? We've turned the dial on the boiler to "water only" but it hasn't worked. We have an ideal combi boiler. Is this something we could fix ourselves or would we have to get a plumber in? If so, how much would this cost? Thanks. Much appreciated for any advise.
Expert Trade Answers
"Hi there, it sounds to me like the diverter valve is faulty but you will need to get someone out just to carry out tests and confirm, unfortunately you will need a engineer to carry it out and depending on the company is will probably cost between 130-300."
Answered on 18th May 2022 - Member since Apr 2022 -
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"The boiler diverter stuck on the mid position, need replacing"
Answered on 18th May 2022 - Member since May 2020 -
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"This is the divertor valve in the boiler…. You need a gas safe plumber."
Answered on 18th May 2022 - Member since Nov 2021 -
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"You would need an engineer. Most likely the diverter needs changing or the plate to plate is clogged up. Give us a call on Bradford 752 852 for free phone advice.
Mr Reactive"
Mr Reactive"
Answered on 18th May 2022 - Member since Jan 2022 -
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"Hi Zaheera, it seems like your diverter valve is faulty and will need replacing. You will need an engineer to replace this.
FYI;
What is a diverter valve?
A diverter valve is a mechanism in a combi boiler that opens or closes to direct hot water either to radiators or taps and showers. Diverter valves are not found in system or conventional boilers because the valve is only needed in boilers where water is heated on demand, whereas system and conventional boilers store hot water in a storage cylinder.
If a specific hot water tap is turned on, the combi boiler will heat water and the valve will direct the hot water to the tap rather than to the home’s radiators or other taps. If the heating is turned on, the combi boiler will do the same for the radiators. If the heating is on and someone turns on the hot tap in the shower, the diverter valve will prioritise sending hot water to the shower instead of the radiators until the shower is turned off.
Hope this helps.
Kind Regards,
Hussein
HJ Plumbing LTD"
FYI;
What is a diverter valve?
A diverter valve is a mechanism in a combi boiler that opens or closes to direct hot water either to radiators or taps and showers. Diverter valves are not found in system or conventional boilers because the valve is only needed in boilers where water is heated on demand, whereas system and conventional boilers store hot water in a storage cylinder.
If a specific hot water tap is turned on, the combi boiler will heat water and the valve will direct the hot water to the tap rather than to the home’s radiators or other taps. If the heating is turned on, the combi boiler will do the same for the radiators. If the heating is on and someone turns on the hot tap in the shower, the diverter valve will prioritise sending hot water to the shower instead of the radiators until the shower is turned off.
Hope this helps.
Kind Regards,
Hussein
HJ Plumbing LTD"
Answered on 18th May 2022 - Member since May 2022 -
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"It sounds like the diverted valve is stuck in mid position. The diverted valve directs hot water to either you radiators or hot water. You need to call a plumber for a quote"
Answered on 7th Nov 2023 - Member since Sep 2023 -
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"The "changeover valve" is worn."
Answered on 18th Jun 2022 - Member since Jun 2022 -
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