On Thursday, March 27, 2014 1:41:02 PM UTC, Graham. wrote:
On Thu, 27 Mar 2014 11:30:20 +0000, thescullster
wrote:

I have a Honeywell T6360B room stat controlling the fan on a Myson kick
space heater.

After only a year of operation it has started buzzing for a good few
seconds on each switching operation.

There isn't anything in those that can buzz apart from the contacts
arcing, and I imagine that is what's happening.
The contacts might have a tiny magnet incorporated to make the action
more positive.
You may be able to clean and re-tension the contacts.

If its bimetal, check thermostat contacts & cable screws.


NT