Quote Originally Posted by YMC2 View Post
hi, you problem is very hard,

1- look transformer 3ph xfmr, in voltage supply power , out voltage , you metter in point logic board J4 - 6 (phase c ) j4 - 7 ( b line ) and j4- 9 (line a ) with earth , you test voltage send trigger board a logic board , the voltage is vdc= vac /135,8 . you test problem solution voltage problem.

2- ok, again, look j4 1 and 2 ph a , 3-4 ph b , 5-6 ph c, vdc= (i motor x 1.414)/1400 = ? x 3.19 . the test read across resistor r1, r2 , r3 , botton is gnd , in voltage is high more than test , you problem the trigger signal , ct current test .


the oil system return with chiller run 100% fla , lucky
Surely, you jest.........