We have a 2013 Phaeton RV with a dash AC that has got tired of putting out cold air. I just tried it while sitting at our camp site. There is something up front that runs off and on about every 15 se...
You have to charge the refrigerant with the motor running. The AC compressor has to run to make the pressure correct on the gauge. Go slow, follow the directions on the 134a charge kit. put it on max cool and the fan on high.