Hello. I have Kone Monospace elevators, manufactured in 2019, with LCECPU 561 and firmware version 9.1.7.60. Sometimes, there are short voltage surges in the building, and after that, the car command buttons stop working. The call buttons still work. There are no error messages, and Elink doesn’t show any errors either. A person calls the elevator, enters the cabin, and cannot leave or travel because the command buttons are not working. The elevator only recovers after a reboot.
I also have older Kone elevators from 2006, and they don’t have this issue. Does anyone know how to fix this? I can’t influence the building’s power supply.
