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Purchased Goodman 5 ton unit in 2007. The problem we are having is: When you turn the unit on and set it at 76deg. the temp states on the controller it set at 81 deg in the house, BUT it would not cool enough to bring the house temp up to 78deg. the unit stayed on all evening, and remained at 86 deg without ever shutting off.... I know thta is going to hurt at bill time. Any help you can provide would be appreiated..... My email address is: drsduvall@aol.com

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Your system could have lost its refrigerant charge through a leak. Check for visual signs of oil at any soldered joints. This would indicate a leak at a point where some oil is visible. Also check for frost on the big line that returns to the outside unit. If frost is present set you air circulation fan to the on position and turn the cooling to off. Allow the air to circulate for about an hour. Then return the system to the cooling mode. Operate the system when cooling with the fan in the on position in this case.

Posted on May 24, 2008

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