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Edward Kimmins

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Can anyone help with a major problem I'm having?
Bought a house last year. For 6 months heating and hot water worked perfectly. Then 1 day no hot water but heating still worked. Was told I needed a new diverter valve. Paid a gas engineer to come and fit this. After he did. Still no hot water. Was advised to get a new boiler. Bought a new boiler had it installed. Hot water worked for 1 day then again no hot water but heating still worked. Called out vokera who changed the heat exchanger. Hot water for 2 days and now no hot water again but heating still working fine. All in I've had 6 plumbers and gas engineers out over the past 6 months and none of them can work it out.
 

Diehard

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Sorry, I see its one of those instantaneous/on-demand type units.
I would assume the new unit is under warranty. Who better to solve/remedy the problem than the manufacturer of the unit?
Not sure we have vokera here in the US
 
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TomFOhio

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If the boiler was originally heating good but no hot water why would they say replace the boiler? Was it leaking??
 

frodo

Just call me Macgyver
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right here right now, over there later on.
heating and domestic hot water systems have zone valves
and mixing valves
I would take a look at what ever you have

I have no information to go on, so this is a generic answer
 
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