Vokera 24e hot water problems

Joined
31 May 2013
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Location
Yorkshire
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United Kingdom
I'm having a bit of a problem with our Vokera Maxin 24e combi boiler. When the hot water is run, it begins hot, and then goes cold, then goes hot again, etc. The boiler runs for about 30s on and off and straight back on

Its been cleaned, including the fan and venturi, and the thermistor has also been replaced.cleaned the cold water feed filter out plenty of flow to tap.
This has not fixed the problem.

Works fine if the heating is calling.
Any ideas?


Read more: //www.diynot.com/forums/plumbi...roblem-hot-cold.327959/#2785522#ixzz2VAEysvDV
 
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Hi Sparky10,

I could be off base here, but just out of interest if you run two taps at once does it stay hot for longer? One of my friends once had a similar issue and it turned out the pressure switch that tells the boiler you have a tap on was not opening correctly causing it to power cycle as you describe.
 
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Is the primary side on the heat exchange the 3way diverter hole (left front ) to the hot water outlet (left back ) . When I flushed the heat exchange out it took longer to come out of them holes to the right sides .
new heat exchange I think
 

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