Onetap wrote
Rod Speed wrote

The sensing element, the bi-metallic strip, responds
to the temperature of the bi-metallic strip.

Mindlessly silly.

A simple fact

Taint anything like a fact.

that you haven't managed to grasp.

Nothing to 'grasp'

The sensing element or transducer relies on heat transfer
to & from the medium to provide a temperature measurement.

Duh.

In this case we want to measure air temperature,

Duh.

the heat transfer to & from metal to air is mostly by convection

Wrong, as always.

and there is a heater inside the thermostat which will cause convection.

Not when the load off it doesnt.

Is that a co-incidence?

There is a reason the heater is off when the load is off, and you
still want the bi metallic strip to measure the temperature of the air.

Harry Bloomfield is right.

Are you Harry?

Nope.

Quite probably.

Even you should be able to check the headers, stupid.

Straw man? Who was the other troll who was fond of that phrase?

You wouldnt know what a real troll was if one bit you on your lard arse, boy.

I shall never care.

No one actually gives a flying red **** if you ever care.