Hi, got a Vaillant 242e and its not igniting for either hot water o
heating. It makes all the right clicking sounds, pump starts and flu fan starts (only when running hot water tho?).
I've replaced the Flame Ignition PCB and Fan Module PCB tonight, an the mainboard was replaced 2 years ago. However its still not igniting
My brother in law is a plumber and we've gone thru the fault diagnosi in the Vaillant manual, all of which lead to it being one of th PCB's.
Could it be the Thermostat PCB that is at fault or might it b something else?
Full Model No. :- VCW GB 242
-- rdean