Hi Fehlerteufel,
Update on the Kone monospace 0026
While Checking all connectors (screw terminals), connections and shielding, PE as you advised, including the brakes on the motor, i noticed some evidences of corrosion on the springs then I carried out comprehensive brake overhaul, (removal and cleaning of brake parts, confirmation of clearance and reassembling). After the overhauling, I returned the lift to normal and it performed the self test successfully after a while.
It has been doing well ever since.
Thanks so much for the assistance.