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First step is to see if we are getting 24v control power to contactor to energize it.
No. 24 volts. The contactors have 240 volts going in at all times.
On call for AC the thermostat sends 24v to the coil on side of contactor to energize and close the contactor to allow the 240v through to run fan and compressor.
In outdoor unit. Give me model and I can tell you exactly how to find them
Remove service panel on corner. Check where the two smaller thermostat wires connect on sides of contactor as shown previously for 24v ac.
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