A common reason why an ECM espresso machine does not heat is the common failure of the thermostats, or safety thermostats. If one knows how to use a multimeter, please
a) unplug the espresso machine’s electrical cord from the electrical outlet, and
b) remove the water reservoir or shut off the water supply if plumbed in, and
c) Remove the top cover and look for one or more thermostats, including the safety thermostat pictured, and
d) one at a time, disconnect the 2 wires for the thermostat and check for continuity across the male posts. On the safety, please press in the black clicker before testing. Please connect the wires before testing the next thermostat, and
e) If there is no continuity, the thermostat usually needs replacement.
f) Disconnect the 2 wires to the heating element posts and test for an ohm reading of between 8 and 20. Outside of this range, the heating element may be defective and/or damaged.
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