Home Forums General Discussion Technical Questions otis gen2 comm los

I believe 2940 is your ph1 rsl relay?
For your dcss, check the following
p8-1(+) to p8-2(-) = 108 to 132 vdc
p6-2(+) to p6-1(-) = 27 to 33 vdc

Also check rs485 cord

You may need a service tool. Let us know how you are making out