Elevator Forum

it could be the power supply feeding the com bus. it only takes a couple volt dip to have that stuff act funny.

Figured it out. "Ds" traveler wire was dropping it's signal. Swapped with a spare and it's working great. Thanks for the help guys. Its funny how at w...

Elevated not really . the U.S.A had the 2000IC and the TC2000. MP1 was a dover Canada creation. early 80's to early 90's. I was thinking traveler cabl...

update. had it run fine for 4 hours yesterday after changing LS1 card. then crapped out again with the exact same issue. changed the 5vdc power cube a...

ive had this happen on older turnbull and dover tractions. I had a bad power supply that was feeding the floor cards and it would drop just low enough...

im a bit late but I agree with sbrmilitia. ive had aux contacts that were bad that have thrown me for days of troubleshooting.