Compass Limited air conditioner blew cold after 15/30min. Blew hot air.

A/C is not a DIY project. If you installed R134a with a sealant the repair may cost you an addition $1K to clean the shop's machine that gets contaminated. Call a local shop and make an appointment. Be upfront and tell them what you installed on you own.

you have overfilled it!! remember to only fill system under controlled environments or when its cooler like at night you can get false readings if you do it when its hot outside,, just releasing the overfill into the air is a very bad thing and beware it can blind you. proper way to fix is use an accumulator vacuum suck it dry removing any residual moisture add dye and refill to check for leaks with a iridescent light to ensure seals are not damaged from overfill.

For professional help, please contact us. We specialize in diagnostics and then perform excellent repairs. We can service your a/c system for the Jeep.