Hi

Moved our oil boiler to a new location and made a map of the
wiring ... obviously a very poor one as things are not quite working
correctly..

Firstly central heating. System starts up correctly and I can stop the
boiler by lowering the thermostat or pressing the advance button the
the timer control.. This works for the first two attempts but then the
system appears to lock and the boiler keeps running whether I lower
the thermostat or press advance to tun off!!! If I terminate power at
the fuse switch and then turn back on again I can run through the same
process, have control and then locks out and keeps running???

On the ho****er if I request through the timer the boiler ignites but
then will not respond and turn off unless power is terminated at teh
fuse switch??

Any ideas where I have gone wrong would be greatly appreciated

Thanks

wrote:
Hi

Moved our oil boiler to a new location and made a map of the
wiring ... obviously a very poor one as things are not quite working
correctly..

Firstly central heating. System starts up correctly and I can stop the
boiler by lowering the thermostat or pressing the advance button the
the timer control.. This works for the first two attempts but then the
system appears to lock and the boiler keeps running whether I lower
the thermostat or press advance to tun off!!! If I terminate power at
the fuse switch and then turn back on again I can run through the same
process, have control and then locks out and keeps running???

On the ho****er if I request through the timer the boiler ignites but
then will not respond and turn off unless power is terminated at teh
fuse switch??

Any ideas where I have gone wrong would be greatly appreciated

Thanks

Motorised valve sticking possibly.

On Thu, 05 Jul 2007 07:36:28 -0700, mused:

Hi

Moved our oil boiler to a new location and made a map of the
wiring ... obviously a very poor one as things are not quite working
correctly..

Firstly central heating. System starts up correctly and I can stop the
boiler by lowering the thermostat or pressing the advance button the
the timer control.. This works for the first two attempts but then the
system appears to lock and the boiler keeps running whether I lower
the thermostat or press advance to tun off!!! If I terminate power at
the fuse switch and then turn back on again I can run through the same
process, have control and then locks out and keeps running???

On the ho****er if I request through the timer the boiler ignites but
then will not respond and turn off unless power is terminated at teh
fuse switch??

Any ideas where I have gone wrong would be greatly appreciated

Doesn't sound like a wiring fault tbh, if it was it would just work or
it wouldn't. I'd suspect a faulty component somewhere, likely the zone
valve or possibly cylinder stat depending what type of system it is.
--
Regards,
Stuart.