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vaillant ecomax 828/2 e?

hot water runs cold after a couple of min, no fault showing on the display panel

fred
April 2013
VaillantHeating, Home Heating SystemsVaillant Ecomax E
aqua sensor impeller unit needs replacing

dave e
July 2013
Hot water heat exchanger is blocked,replace or clean with sprit of salt

ltd
April 2013

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vaillant ecoTEC plus boiler fault code - how to fix?

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Vaillant ecoTEC 831 Plus

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Worcester boiler dripping water, can I just tight the screw? The icon next to the valve looks like radiators... [Read more]
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Following a F22 fault where we had no heating and only cold water from the hot water tap, I topped up the syst... [Read more]
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Find out how to mend Vaillant home heating systems