"Billy N" wrote in message
om...
"BigWallop" wrote in message
...
"Billy N" wrote in message
om...
Hi I was wondering if anyone can help me with a problem that i have
with my ch. my heating and water are on continuoius and will not
switch of. I have tried switch it of at the
a) control panel but it still remains on
b) the room therostat, sill on
the only way i can get it to go off is if i switch the boiler
isolation switch off

Hope someone out there can help me.

Make and model of the timer/programmer please ?

Same information on the boiler would help lots.

Age and layout of the system is even more of a help.

Thanks folks

Make & Model of Boiler: potterton Flamingo RS40s/50s
make & Model timer : landis & Gyr RWB2
AGE about : 20 years

After ruling out the frost 'stat outside, it could be that the switch
terminals on the timer have eventually welded themselves together. If the
timer is the same age as the rest of the system, I'd start looking there.

You will need a meter that can produce its own readings in the Ohms range to
check it properly. Remove the timer from its back plate and check across
the HW and CH connections to see if they are opening and closing as they
should.