Curious! Said Alice.
Idly turning the setting dial on a *just out of the box* Danfoss cylinder thermostat I could clearly hear the switch changing over.
The curious bit is that my office temperature might be 23 deg. C whereas the temperature setting on the stat. is *on* 42 and *off* 48!
The settable range is 30 to 90 so not out of range. I know it is common to have a resistor across the circuit to reduce hysteresis but don't see this being explained by lack of power.
Any ideas?
I plan a call to Danfoss technical dept. on Monday.