Not hugely experienced specifically with boilers, but trying to work out
if the issue I'm having is an affordable one, or if I'm going to have to
consider a new boiler.
Glow worm Compact 80p pilot
Basically, CH behaving itself as normal (not that I need it this time of
year), but when I open the hot tap, the HW heating doesn't kick in. In
fact, if the CH is running, and I open the HW tap, the boiler cuts
heating immediately, as opposed to flicking over the heating circuit and
continuing to run the heater as it normally does.
If I turn the HW off, the CH kicks back in and starts pumping/heating
I've read a number of things online about issues with the 3-way/diverter
valve on various models including this....I think I've located it (can't
find a manual for mine online anywhere)...Thing is, if what I've found
is the correct thing, it's tucked up behind the water pump in an almost
inaccessible position. Incidentally, I turned the power off,
disconnected the plug to this part, powered it back up, and THIS time,
with the CH running, turning the HW on did nothing (i.e. CH carries on
heating as if I've done nothing). Not sure if that helps anyone confirm
I've found the right piece of kit.
Any thoughts anyone? Think the boiler is about 11 years old, so it's
had a reasonable run, and it had a new PCB a year ago, so it would've
been nice to get a bit more life from the old girl before I have to
shell out 1500+ quid replacing it.
If that is the faulty part, although I'm fairly handy, I may still have
to get someone out to sort it, so any rough price/availability from
anyone would be good too.
Thanks for any help/advice you can offer.