“No heat in the boiler was easily diagnosed with an ohmmeter that showed very high resistance across its disconnected terminals. $14.38 and a few days later (and no $8 shipping for a 15 gram part like other sites), and I'm back in breve.
Although proper thermal conductive paste is best, zinc oxide lotion or ointment can do in a pinch- zinc oxide is a good heat conductor and was under my original sensor.”
