P paul87buick New Member Joined Oct 10, 2003 Apr 25, 2011 #1 Ac compressor cycles on and off when heater is on any know what would cause this problem
T Topjimmy Member Joined May 24, 2001 Apr 25, 2011 #2 The a/c is designed to run when the heater controls are set to defrost. That being said, if it's manual a/c you may be low on refrigerant to cause the cycling. HTH - Jimmy
The a/c is designed to run when the heater controls are set to defrost. That being said, if it's manual a/c you may be low on refrigerant to cause the cycling. HTH - Jimmy
