on 26/08/2007, Arthur2 supposed :
Do these thermostats have a failsafe? e.g. If the thermostat is unable to
keep the temp below
a limit, will it shut itself off?

The thermostat will cut in and out for safety - ensuring the
temperature cannot rise above the stats set (none adjustable)
temperature.

By your description it sounds as if you need to find out why the flow
is poor through the shower - perhaps a washer breaking up or similar?

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk