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Electricstorm,
There are 4 pins leading from the control board to the LEM HASS current sensor - pin 1 isn't even hooked up to anything, you can omit it. Pin 4 gets +5V and pin 3 is gnd. Pin 2 is where the output comes back from the sensor. I hooked up two 100k resistors (I think they were - basically any two resistors of equal value), one from pin 4 to pin 2 and one from pin 3 to pin 2. This splits the +5V in exactly half so the 'output' looks like 2.5V so the controller thinks it's hooked up and getting a signal back. Yellow light doesn't light (assuming you have no other problems, unlike mine!) and you can move on to the next test.
Are you near the RTP?
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