Question about Heating & Cooling
Check the disconnect or circuit breaker for the outside unit. Use a voltmeter to make sure you have power on the Line side of the contactor. Set the thermostat to make the air come on check the contactor to make sure it is pulled in. When the contactor is pulled in check the load side of the contactor for power. If the contactor doesn't pull in, go to the thermostat and install a jumper between R and Y to make sure it isn't a thermostat problem. Also make sure you have power to the circuit board. Next you can check the capacitor. If it looks swollen, it's bad. Let me know what you find if this doesn't get it going and I can give you some more suggestions.
Posted on Sep 05, 2010
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Posted on Jan 02, 2017
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