Question about Heating & Cooling
First check the voltage on the red and green wires on the new transformer -- it should read 24 volts AC. If this is the case, the red and green wires would go to the contactor / relay 24-volt coil terminals -- wouldn't matter which one is connected to which side of the relay coil.
Posted on Mar 26, 2011
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Posted on Jan 02, 2017
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