...gas as a safety precaution. If you're comfortable tinkering, first CUT THE POWER AT THE BREAKER, then remove the cover and check and clear all the wire connections. Sometimes it's not a faulty sensor ...
sure you are getting the same reading into the transformer and out of the transformer should be 24vac. +- a few volts. That is a starting point, and should be able to get you in the correct direction.
...gas heaters. Make sure the shutoff valve supplying gas to the heater is on. Turn the gas valve to "pilot", press and hold it while attempting to light the pilot. Once the pilot is lit, continue ...
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