low - 40 psi
high - 350 psi

350 psi for the high side is way much over the required pressure of 150 - 160 Masyadong mataas yata yan, could be your condenser fan failed and your pressure switch was probably disabled or bypassed kaya di nag cut off ang compressor mo.

I am having the same problem right now. My van stopped cooling and I have it a complete checkup. Flushed my system, replaced the expansion valves 2 kasi front and rear aircons, replaced drier/filter. Then recharged the system and ok na, malamig na. Test drive it, nawala lamig. Compressor stopped and when we checked the high side pressure wow, 300+. Reason,, condenser fan is not working. I am having it replaced today. Hopefully, everything will be allright again.:icecream: