42 Platform Left Button ON
Kone · Elevator Control
What does 42 mean?
The platform left button is detected in an ON position, even without operator input. This is a warning only.
Common Causes
- Platform left button stuck in an active state.
- Wiring fault causing the switch input to be continuously active.
- Faulty switch contacts or internal damage.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect the physical "Platform Left Button" for mechanical binding, foreign objects, or damage that could cause it to be stuck in the actuated (ON) position.
- 2
Verify the electrical operation of the "Platform Left Button" switch contacts using a multimeter to confirm proper open/close functionality when manually actuated, ensuring no continuous short or open circuit in its released (OFF) state.
- 3
Check the wiring continuity and insulation integrity between the "Platform Left Button" switch and the designated input terminals on the Kone Elevator Control module for any signs of short circuits, loose connections, or damage.
- 4
Access the Kone Elevator Control diagnostic interface or I/O status screen to verify the real-time status of the "Platform Left Button" input signal, confirming if the control system consistently registers it as ON, even when the button is physically released.