[77newell]

There is only one way that low current can occur as you have described it as far as I know and that is that the circuit with low current has higher resistance. This could be verified by checking the resistance in each of the compressor circuits. I would expect low current circuit to have about double the resistance of the high current circuit. If this proves to be the case, then the question is where is the additional resistance located. It would probably prove easier to track the voltage drop across the various parts of the circuit. If the drop is pretty much all in the compressor that will be the undoing of the motor.

With my brain in a state of turkey oversaturation it is possible that I've completely missed or misunderstood some of the previous discussion.