Question about Heating & Cooling
Error c5 is a communication error,between the inside and outside unit.
Check your condensate pump operation,float should move freely and unit should not be full of water.
Another possibility is faulty wiring from your outside unit to the inside.
Try taking all power away from unit for 5 min and then turn on to see if it will reset.
If this doesnt work call for service.
Posted on Jan 31, 2010
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Posted on Jan 02, 2017
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