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Vaillant timeswitch 150 analogue unit (clock stopped?

vaillant timeswitch 150 analogue unit. the clock has stopped working.
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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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How can i fix my vaillant boiler it has code 33 on the lcd screen?

ow can i fix my vaillant boiler it has code 33 on the lcd screen

stephen
November 2011
VaillantHeating, Home Heating SystemsVaillant Code Screen
type vaillant F33 fault code in the search box on top of this page


hints at
air pressure switch
fan motor

wirecutterman
November 2011

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