Rafal Kaczynski

Thu 19 Dec 2013 08:44pm

Hi Sharon It is commin fault on Vokeras boiler . It could be diverter valve faulty or worst scenario heat exchanger. Regards Rafal

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Sam Sandhu

Thu 19 Dec 2013 09:34pm

Hi Sharon Sound like either the diverter valve is passing or the domestic hot water heat exchange needs to be replaced. You can check if it is the diverter valve. When the heating has been off for over an hour and the pipe work below the boiler is cold, open up the hot tap nearest to the boiler. The hot pipe below the boiler should start to get hot (should be a 15mm pipe). If the flow pipe (22mm heating pipe) is getting hot when the tap is running you will know that the diverter valve is passing. If you are unsure and don't understand the above, I would recommend that you put an ad on the site explaining what is happening. Budget should be around £250. Might be worth servicing the boiler if it hasn't been done in the last 12 months. Best of luck. Sam (eps)

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Michael Tucker

Sat 28 Dec 2013 12:59am

Hello Sharon, You can see by asking the question how much more complicated it gets. Do you know what a diverter valve is? Best to get an on site survey/quotation done, this is a free service to you and you will get 3 quotes. Simply post your job onto rated people's site. You are not obliged to go with any of the quotes- but ever job that's posted is paid for by the relevant tradesmen.if they contact you that means they are interested in your job. If one of them is awarded the job then great news for you both. ratedpeople.com Regards Michael

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Fenton McLaughlin

Thu 26 Dec 2013 08:02pm

It sounds like you (DHW) domestic hot water heat exchanger is scaled-up and flow is restricted, have the plate-exchanger cleaned or replaced and fit a filter to the system.

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