No AC, arrived and turned on system and found AC operational checked pressures and found levels to be normal, checked filter, dirty, replaced, checked air handler and found heat strip on and running while ac is running, checked all low voltage wiring for short, no shorts, checked condenser wiring and found w wire energized and sending which is turning on the heat strip, need to further diagnose system with tech support. Control board at condenser and or defrost control board may need to be replaced. Removed w wire from wiring so AC and heat will operate but not heat pump.