I have a Carrier Infinity Weathermaker 58MVP furnace and air conditioner. Newer AC with Puron technology that I believe is 3.5 ton unit. I live off-grid and last year ran the AC no problem with my 10KW military surplus diesel generator. I changed generators to a 12.5KW diesel model with an Isuzu diesel engine. I tried starting my AC and the blower motor came on and then when the compressor goes to start it just stops. It does not really seem to overly bog the generator. I am wondering if I have a problem with the AC compressor or if it is not getting enough power from the generator. I was outside and saw the fan on the outdoor unit start to spin and then boom it just quits. I would like to know what the current draw during motor start is?? I read in the manual that it is 30 or 32 amps (can't remember which) for locked rotor rating. Is that the max it draws during motor start-up or is it higher than the locked rotor rating?? Could it be that the power source is fine and there is something else at play here? Is there a way of using motor start capacitor to ease the starting?