hi,
my 3 year old Honeywell ST9400C has started changing the heating side of settings (water side ok) all on it's own - e.g. from 'auto' to 'all day' etc.
anything I can do other than replace the unit please?
thanks
Ian
sounds too complicated for me - i had to get an independant engineer to inspect mine before the installer, carillion would take any notice - now they have been to look, agreed install incorrect and still waiting for corrective action, replacement of heat exchanger and refund of my engineers...
emailed Worcester for advice on possible damage and got the reply;
"It is certainly possible that two years without pump overrun or pump anti-sieze functions could place undue stress on the boiler's main heat exchanger, yes. The only way of knowing would be to get one of our engineers to...
sorry it took a while but i feel a degree in electrics comin on - we had a look and the answers are-
2 reds in ten come from each of the black motorised valve cables
brown in 10 does come from pump white cable
terminal 9 is empty
if this convinces you that it has been wired...
got to get the wife to help here as difficult to bend - will post replies to questions soon as poss but can say terminal 9 is empty (that is nothing going into top but botton of all terminals is next to the case so can't see anything other that what's going in the top - is that ok?
back with...
took a photo of the overall layout of electrics in the airing cupboard (boiler is downstairs in the kitchen) and a close up of the jumction box.
lots of wires going into this box - from pump, valves, timer, tank, etc -so many l got lost in my own airing cupboard.
gosh someone...
thanks for all the info but that leaves me with the same query ( presumably Br Gas will charge for another visit) - what is involved in finding out if the installation was done properly. (and how long would it take an engineer on a visit - or put another way how much£)
fully understand the...
Getting desperate and need advice please!!!!!!!!
I've got a problem with the above boiler installed 2 years ago under warmfront scheme by Carillion (lots of problems with installation but working ok after a few weeks and corrective visits )- had 2 annual services since with no problems.
at...