Sounds like a duff compressor to me, this is why time and time again I tell people to stop using kwik fit and any other fast fit place. I've had 2 galaxies from customers where it's been gassed up and not working properly because compressor has been shot, they don't like being low on gas and break. First galaxy was blowing "kinda cold" but not cold.... It was running 250psi on high side and low side 78psi... Both higher than normal. 2nd one compressor was turning but pressures were equal on high and low sides. So just wasn't conpressing anything.. But I bet they never checked anything in regards to pressures just let the machine do its thig and disconnect after saying all done.