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Carrier 24ACA430A0030010 Expansion Valve
An expansion valve allows the coolant to expand into its normal low-pressure gaseous form from its highly pressured liquid form. Your air conditioner would be impossible to cool the home if the expansion valve was totally worn out.
Major indications to watch for in a failing main expansion valve
- The outdoor AC unit takes too long trying to bring down the temp in the house
- Air flow is not cold enough as it ought to be for the AC to cool the house
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