Answer Question
How do you the Jbox went bad or if the thermostat is the problem? Jumping the relay starts the compressor.
Fans work but new a/c compressor does not cycle (but A/C works fine with test unit). J box is an 8330A751. If I jump the relay the compressor comes on. Not sure if j-box is bad or if thermostat is not sending the signal to the circuit board to tell it to switch the relay on or if the circuit board in the J box is bad. We did try replacing the relay itself with no change.
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