Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner
First check the breaker. If it has been tripped then you will surely need a good contractor.
If it has not tripped then double check the thermostat settings and batteries (if applicable). Make sure the fan is set to auto, The cool function has been selected and the temperature has been set low enough for the unit to come on.
If this still does not work then you will still need a technician. This is because there are many more possible failures all of which are relatively dangerous and technical. Good luck!
Posted on Jun 18, 2008
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Posted on Jan 02, 2017
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Oct 13, 2014 | Heating & Cooling
How do you know power is at the outdoor unit? Did you check it with a meter? Check your breaker. If there's power at the outdoor unit, then shut the power and test your contacter. If the contacter has supply power then check the low voltage (24-28 volts) that operates the contacter, and if none check the low pressure cut-out,high pressure cut-out and make sure the thermostat is calling for cool. All ok so far, then test your capacitor. I forgot to mention to check for loose, broken, and disconnected wires.
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