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: Position lost; the control system has lost the car's position in the shaft. Specialist System Troubleshooting Suspension Traction Media Monitoring (STMM)
: Safety circuit open or door safety circuit opened during travel. 13 : Error in the normal door opening sequence. Safety & System Blockage Errors schindler 5500 error codes
: Elevator blocked because the STM (Suspension Traction Media) has reached the end of its lifetime; immediate replacement is required. : Position lost; the control system has lost