Problem: Shutdown time is ACB not open.
Problem found: ACB Internal control unit not working found.
Observation: DTW 203 UVR checked, When plug PTT UVR give contact with (208V) and 27x relay energize, Buzzer energize but ACB didn’t open, it’s remaining close. Panel local position we try to trip ACB using pull button switch, it didn’t work. Trip from ACB and then try to close using pull button, its working.
