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Mend Vaillant Boiler Heating Advise

how to fix my boiler?

hi i have just had my diverter valve replaced
and now when i run a bath the central heating
comes on even tho its off and the thermostat
is down can anyone advise thanks billy
my boiler is a vaillant ecoTEC+ 824r1

bill nethercot
October 2010
VaillantHeating, Home Heating SystemsBoiler Heating Advise
have availlent boiler everytime we put the hot water tap on, the boiler sounds areoplane taking off,

keith foulger
October 2010
It's one of three things:
Faulty diverter/motor.
Fitted incorrectly.
Faulty PCB (which indicates it may have not been a diverter problem initially)

Carefree
October 2010
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