well..this is da first time i heard about this, the first thing i would check is da contactor IT migth be not doing contact properlly thecompressor is going on and off
why does ac blow warm air? why does ac blow warm air?
Air in the water system.
you should probably check your water in your radiatior and if it is full you might need to replace the cap. If neither of thise are the problem it may be your heater core which sucks or something electrical.
usually in hot or warm temperatures because, hot air expands and cold does not.
good question
Compressor not operating.
if the heater does not blow out warm air change the setting.
because you need to keep warm when it is winter and other times when it it cold
Temp blend door malfunction.
Temp blend door actuator is bad on the passenger side assuming you want both sides to blow cold air.
if it's the outside unit, it will always be hot air. that's the air being pulled out of the house. cold air in, hot air out.
engine not warm, low coolant, or stuck thermostat