Everything seems to be right except it feels like the heater is blowing
Two possibilities. One is the blend door actuator is bad ( located under the dash, in the center). Or the controller is bad.
SOURCE: a/c in jetta blows hot air, its been charged, compressor comes on.
you need to have it diagnosed by a professional. These are complicated systems even to a trained tech. You may be over or under charged, have a clogged expansion valve, have a leak or many other issues. This model has a rcv refrigerant control valve inside the compressor which regulates the pressure of the compressor. If you notice the compressor never shuts off like conventional auto a/c's do the only time the clutch works is when you turn it on or off. Can be complicated.
SOURCE: ac not working, blows hot air only. Recharged
Check the evaporator coil by sniffing the vents,floor is best, with your tester.
SOURCE: air conditioner blows hot air fully charged with
compressor or receiver/dryer or condensor may need to be replaced. Further testing will have to be done. Look into your sight glass and see if there is any bubbles in the glass, or if glass is extremely foggy. If so, you may have air in the system. Check to make sure you are getting power to the compressor.
SOURCE: AC blows hot air but AC compressor works
if the compressor works and your freon is charged it may be the blower flapper door....disconnect battery for 10 minutes and then re-connect to reset the electronics that control the flapper
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