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Registered
Join Date: Jul 2001
Location: Lawrenceville GA 30045
Posts: 7,429
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One of our AC units was cycling on and off sporadically during the summer - similar to what you report. It would cycle on only for a sec or two, then off, then within 5 or 10 minutes, same thing again. The AC technician diagnosed it as either the control board or the thermostat. I swapped the thermostat with one off another AC zone in the house and the problem persisted. I was able to save about $250 by finding an OEM control board off ebay rather than purchase through the mfr.
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Mark
'83 SC Targa - since 5/5/2001
'06 911 S Aerokit - from 5/2/2016 to 11/14/2018
'11 911 S w/PDK - from 7/2/2021 to ???
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