working on a window unit. I have sweat on suction line al the way to the comp. suction press is 70. Temp on line going in evap is 40 deg. No high side port on unit yet. All seems well with the operation until the compressor shuts off after it runs for 15 minutes. I have no wiring diagram. It seems like the t stat on the unit is shutting it off early. Does anyone know what the letters identify on back of t-stat. (l,c,b,& h) I want to bypass the stat and see if it keeps running. Any ideas???