Help! Electric Trane XR12 HVAC Not Blowing Warm Air

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Old 12-28-14, 09:12 AM
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Help! Electric Trane XR12 HVAC Not Blowing Warm Air

I have a Trane XR12 HVAC and I turn it on and the thermostat current temp says 59 and I set it for 78 and I felt the vents. It is blowing air, but not warm air. Even after 1.5 hours, the room temp barely went up from 59 to 60 degrees! I went outside and checked the unit and the motor is running and the fan is blowing, but the house is not warming up. I even turned up the temp to 85 degrees and don't notice much heat coming out. Just slightly cool air. What can I do to troubleshoot and resolve?
 
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Old 12-28-14, 11:00 AM
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Open the panel to your outdoor unit and visually inspect for swelling on the capacitor.

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This slightly swollen cap would require replacement.
 
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Old 12-28-14, 09:38 PM
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Thanks for the response. How do I know what she swollen capacitor looks like? Would the body be swollen or the contacts at the top be swollen? How much would a replacement cost? Are there any safety items I should be aware of in doing the replacement if it's needed?
 
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Old 12-28-14, 09:55 PM
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A capacitor can hold a charge for a few minutes after removing power.


Most units have a dual capacitor that serves the fan motor and the compressor motor. If you have a dual cap it is important to snap a picture or write down the color = terminal combination in use.

Match the voltage and microfarad value of the existing cap if you replace it.
this is a 5 uF plus 40 uF dual capacitor that is very swollen on the terminal side.



A cap should not be swollen.


35 dollar meters are available that can measure capacitance...
 
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