DIYbanter - View Single Post - BLOWING FUSES PART 2 !!!!!!!!!!!!!!!!!!!!!!

wrote:
thanks to all the constructive info
instead of replying to you all individually, i started this new thread.

(Scads of shouting deleted...)

Egad, you leave uk.d-i-y for a few months, come back, and the place is
overtaken by an outbreak of panic ;-)

Digging through the description given by both of you, it seems you did
touch the wiring, by putting in the new back plate for the new
controller, right?

My money's on a simple wiring fault, such that the 'call for CH' wire is
connected to a neutral or (less likely) an earth. As you yourself say in
this posting, this fault wouldn't show up until it gets colder and you
try to run the CH. All this panic over the pump seems misplaced to me;
10 minutes with a multimeter should sort it all out, though in your
desparation to fix it you may by now have introduced multiple faults.

Sorry if this comes across as harsh, but there it is...

Stefek