With the warm weather with us at last, I decided to turn the central heating
off, so I switched the Danfoss TP5 Digital Thermostat to Frost only. This
didn't make any difference and the heating kept on coming on. Next I turned
the Danfoss Central Heating / Hot Water Controller off, so it should have
only provided hot water, still got hot radiators. Next I switched the Boiler
to just hot water and no central heating, still got hot radiators.

The oil fired boiler (Worcester I think) was installed about 15 months ago
to replace a gas system. I moved into the house about 4 months ago. There is
now no hot water cylinder as the boiler is meant to provide hot water
direct. It does this but will only fill a bath with hot water if the tap is
running slowly.

Any ideas of what may be going on to allow the rads to keep getting hot,
with everything switched off, would be gratefully received.

Julian Ashcroft
Isle of Man