DIY Doctor

hot water for 2min

Postby RichardWh » Thu Jul 17, 2008 7:51 pm


My Volkera Excell 80SP gives me hot water for about 2min then goes cold. Enough to wash the pots, but no good for a bath. Heating is OK.

Any idea??

I've run cleaner though the sytem twice just in case there is sludge in it. The water runs clear.
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Simply Build It

Postby htg engineer » Sat Jul 19, 2008 8:32 pm

Replace HW sensor for starters. If the sensor is faulty is coule be telling the boiler it is at maximum temperature when it's not.

Still no luck - is the heat getting away from the boiler ? possible blockage in heat-ex ?

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