Replacing thermostats on T313VW .The white thermostat has burnt
out due to poor electrical connection ,the new thermostats
MERC00199475 are both black,one has a faint purple/blue spot on it.
Which way round do they need to be fitted ie which one replaces
the original white thermostat which is mounted on the left .I phoned
Hotpoint up and the lady told me they did not know and she would pass on my query to the trade section ,but i have not received a reply .Thank you .