HI, i think this sounds similar to a problem we had, we had 2 white boxes in our airing cupboard, sorry cant think of the name at the moment, the PCB had gone on one of them so it was costantly calling for heat, even though it didnt need it and the pipes were very very hot too.
Had a nice engineer look at it and he told us what we needed, and only cost about £25-00 to fix rathe rthan another callout, and he was spot on.
If this is simialr drop me an email Graham@Robertsweb.co.uk and i will try find which part it was we got.
Graham
December 2008
howtomendit.com for free repair help, information and advice.
