Hey all,

I have a Kone KCM831 on my route, it's the only one i have and although i have the installer datasheets and error codes, i cant find any information on this displaying on the COP.

After there was a service crew in the building changing the doors for a couple days, when the threw the power back on the front COP was displaying "dd" on the position indicator. Tried resetting the board behind the COP, but to no avail. The rear COP works fine, and the front one will still open the rear door and place calls to rear door landings (this is a front and back entrance) but wont take calls or respond at all to anythimg front-car-related.

Im stumped. All the connections are plugged in, it just says "dd" and that's it.

Any insight would be greatly appreciated.

Cheers all.