Goodman furnace model GMS90703BXA, won't start. When power is connected, a clicking at about 1 per second comes from one of the two components on the circuit board labeled ZETTLER AZ942H-1C-18DT(206). I can't tell which one is clicking, and it may be both. I used an automotive stethoscope to try to determine which one is clicking, but I can't tell. The signal LED is steady.

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Question about Goodman GMS90703BXA Heater

Goodman furnace model GMS90703BXA, won't start. When power is connected, a clicking at about 1 per second comes from one of the two components on the circuit board labeled ZETTLER AZ942H-1C-18DT(206). I can't tell which one is clicking, and it may be both. I used an automotive stethoscope to try to determine which one is clicking, but I can't tell. The signal LED is steady.

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Check your flame proving system! Make sure that there is a spark and the sensing rod is cleaned free of carbon and soote!

Posted on Oct 13, 2010

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GMT070-3A model Goodman furnace flame comes on then shuts off it has a single continous blink. I push in the switch the pilot lights up a few seconds and then the gas comes on and flames only for a few...

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