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Old 07-10-2013, 08:26 PM  
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Default Lennox ac not blowing cold air

I have a Lennox 10acb60-5p and it is blowing hot air instead of cold air. The outside unit fan is working and running. How can I tell if the coil is frozen?

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Old 07-12-2013, 09:38 AM  
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You will see frost on the lines at the A coil above the air handler/furnace . Also Air flow will be reduced coming out of the vents.
Check the lines for a warm/hot feel on the small line and cool/cold on the larger copper line. Is the compressor running or just the fan on the outside? Cut power at the disconnect, wait 5 min and restore power outside. You should hear compressor run when fan starts.
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