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Mend Vaillant Heating Light

heating?

my vaillant is showin a F 22 message on the screen,the green light is on but the heating and the water are cold..help
thanks
Pierre

pierre
February 2011
VaillantHeating, Home Heating SystemsHeating Vaillant Light
F22 relates to a lack of pressure in the boiler system, re-pressurize to 1 bar

Carefree
February 2011
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