I agree, they seem good.

A high resistance is certainly a problem.

But a low resistance tested at low voltage is not proof of good
condition, but the other failure modes are so rare I wouldn't bother
with them yet.

The usual failure mode of those type of thermostats is either open
circuit, or high resistance, well below their trigger temperature.

The overall symptom you report is consistent with that failure mode,
but only if one of those thermostats turns off everything; motor and
element.  It's more likely those thermostats are only in the path of
the heater.

The heating element in your photograph is rated at 1300W 230V AC, so
that's 5A. =20

My next diagnostic test would be; with the power plug disconnected
from the wall, and a DMM in conductivity beep mode, connect one probe
to the active pin on the plug, and use the other probe to find the
last point in the circuit that beeps.

--=20
James Cameron
http://quozl.linux.org.au/
--=20
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