KONE MUL Board Replacement

Ive got a KONE acting up with a 048 fault. I got here by trying to toubleshoot RIFF board (phone not working) by swapping it out with adjacent car. After swapping board, elevator goes to nearest floor and holds door open (fault 48). I thought i may have messed up the cable between RIFF and MUL but have tested and seems okay, which is leading me to believe the MUL is bad?

If MUL replacement is needed, do i have to reprogram the COP?

Thanks!

Check safe edges bud 48 is reopen device probably why your doors are staying open??

Thank you Dmhughes. I double checked that the small red light is going off and back on when i break the plane. the edge plugs direcly into the operator. is there a better way to check?

Thanks!

Have you tried a lon download? Usually required after introducing a different new board.

Hi, have you got anymore faults logged ?

No Sir, Just the 048

If it’s not the input from safe edge it maybe a faulty D/O button, it’s stating that they’re open device is triggered?

put the lift on fire service inside the car, if the doors close normal on fire service you have a Photocell fault. Sensors/cables/board for the sensors could be faulty. 0048 is photocell or door open button i highly doubt you have a faulty MUL Board. Also you dont need to do a LON download when changing the photocell board.

Is the Door Open Command LED on the CPU lit up? I've seen those edge cables break at the connector.

Thanks all! I'll be back onsite tomorrow armed with a few good leads! Much Appreciated!

Quick update: detector and DO button are okay... all associated boards, cords and programming turned out okay. The problem was dip switch 1 (force LIM A) set to ON, on S! on the cartop LCECCBN2 board. 048 fault all day.

Thanks for your help!