Tac50-04-32

Does anybody know what picks the K2 relay on the 2407MC board? I keep getting a brake regulator fault. 1507. I have change the regulator and all the relays. BRKC picks, MC picks but no BRK. I switched all the boards to another car and they seem to work correctly. Not sure if I’m having a drive issue, almost seems like it’s failing a self check test and not picking K2.

Have you replaced the MC1 auxiliary?

I finally got a break working on this elevator. It sat overnight on inspection and faulted the next morning on the 2407MC board.Negative W IGBTfault. It was very weird and never gave me this fault before. But it’s back in service. Thanks guys.