I have asked this question before and have tried some of the suggestion. I'm still having problems with 3 RTAA-1254YL01A3D0BFGJKN Starter Transition. This problem comes and goes. Some of the things I have tried are bending the pins on the board to get a better connection; I have replaced all aux contacts and have used Trane parts. I have also call Trane to have a representative come and look and was told to replace the coils on the main contactors (1K1 & 1K2). This did not help. The pumps for this unit are on all the time 24/7. They are used for production for cooling rolls. The chiller is set up to maintain 44 deg water. The E proms have been updated. Thanks for your help. If you need any more info I will try to get it to you.