In message , Grunff
writes
Andrew Heggie wrote:
Is a thermostatic radiator valve that has been left in the off
position likely to stay shut down despite the being wound full on?
I have a radiator which has not been used for a year and now will
not
turn on, an it has been bled.

Take the top off and push the sprung pin in - does it move? If not, tap
it *gently* with a hammer. Does it move now?


.... Place e.g. a spammer on top of the pin and tap that gently with a
hammer
--
geoff