wiring issue...


Old 11-14-19, 08:10 PM
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wiring issue...

Model 700, with older Goodman 92 furnace.. no "C" terminal on furnace...and no "COM24" terminal.... where can i get power for the "C" terminal???
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Old 11-15-19, 01:22 AM
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Welcome to the forums.

There are two styles of 700 humidifier. Both are self powered. The older version operates when you short the two control wires together. The newer model requires 24vAC on the two wires to operate. Make sure you know which style you have or you will fry it.

As far as I know.... all Goodman furnaces have a control board. There is usually a C terminal on that board. If not..... look on the back of the blower door for the wiring diagram. You may be able to use the metal chassis as a C connection.
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