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Mend Vaillant Boiler Showing F

My boiler is showing an F?

I have turned my heating to on and water to on, but nothing has come on. My boiler is showing an F on it.
Its a vaillant ecotec boiler

Eileen Jackson
September 2008
VaillantHeating, Home Heating SystemsBoiler Showing F
Think F stands for FAULT, need to call a heeting engineer.

JB
September 2008
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Vaillant ecoTEC 831 Plus

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