Air conditioner

The A/C and climate control were working before I left on a trip and then the 2003 Pathfinder sat in my driveway for 10 days unused. On my return there was no cold air coming out of the vents. I bought a recharge kit, but it did not suck in any of the new freon and the gauge on low side read 150 pounds. Using an additional pressure gauge, I determined that the pressure on the high side was 150 pounds as well. I released some pressure on the low side and the pressure on the high side went down also. The clutch is engaged when A/C is turned on. Blower and vents are operational. I'm not sure if there is a stuck valve in the compressor or if something electrical like a relay is not operating. There are no fuses for the A/C on the Pathfinder that I can find.