Elevator Forum

Unplug all the pmi cards from the backplane except card 1. Leave the cpu dsp and card 1 plugged in. If it still fails it is probably the dsp board. Al...

Unplug all the pmi cards from the backplane except card 1. Leave the cpu dsp and card 1 plugged in. If it still fails it is probably the dsp board. Al...

Did u fix it

Thanx I'll look into that.

Replaced with a known good one

Dude you might have a welded contact on the CR relay

It's an Otis 401 with a Robicon direct drive and it has a control board with fault leds. The low line led comes on once about every sixty or so runs. ...

I had one do the same thing. Turns out it was closing the door to fast and bouncing the lock cancelling out my one floor run