Vaillant 242E blowing PCB Fuse

[championc]

Hi all,

My neighbour has a Vaillant 242E Combi and it suddenly failed the other morning. It was completely dead. I then discovered that one of the two internal fuses had blown (the one on the right when you open up the control panel and look down on the PCB)

I have replaced the PCB and the boiler was fine until I ran the hot water and the same glass fuse blew again.

Anyone any ideas please?


Cormac
Dublin

 

[Agile]

Most likely to be the pump failed.

Best way to test is to power the pump from an external source with a 3A plug top fuse.

Be aware that fixing your neighbours boiler could get you into regulatory and insurance issues if anything went wrong!

Tony

 

[CorgiIOW]

Ditto,, as Tony said failed pump, had exact same prob Friday, although AAV was leaking bad ,,, and didnt help.

Dave.

 

[chrishutt]

I have replaced the PCB

So who's going to pay for the PCB that it didn't need?

 

[keyplayer]

championc, if your pump turns out to be working see :

//www.diynot.com/forums/viewtopic.php?t=27024&highlight=A it may or may not help you.

 

[delyte415]

HI EVERYONE
I HAVE GOT A VAILLANT TURBOMAX 828E AND EVERY TIME I TURN ON TAPS IT BLOWS THE FI FUSE WHICH IS THE FUSE ON THE RIGHT WHEN YOU OPEN THE FRONT PANEL I THINK IT MAY BE THE FAN OR PUMP DOES ANYONE HAVE ANY IDEAS ON TESTING THE FAN OR PUMP

THANKS