Working with KONE 3000 MRL elevators?
Understanding LCE indicator lights can significantly improve troubleshooting efficiency.
🚨 Key Status Indicators
🔴 Emergency Alarm
ON = Alarm active
OFF = No alarm
🔴 Lift in Fault
ON = Elevator fault, cannot run
OFF = Normal operation
🟡 CPU Running
ON = CPU running normally
OFF = CPU stopped
🟡 Inspection Mode
Indicates inspection / normal / car top status
🟢 Communication & Power
🟢 Car Communication OK
Normal data exchange between boards
🟢 Shaft Communication OK
Normal communication with shaft devices
🟢 +24V / +5V Power OK
Stable power supply to control system
🟢 V3F OK
Drive system operating normally
⚙️ Control & Operation Signals
🟡 Start Permit
Main contactors activated
🟡 Main Contactor
Control signal status
🟡 Drive Needed
System requests elevator movement
🟡 Open / Close Door Command
Door operation signals active
🟡 Door Contact
All doors closed status
🛡️ Safety & Protection
🟢 Safety Input
Safety circuit status before door zone
🟡 Photocell
Light curtain blocked / clear status
🟡 Open Button
Car door open button signal
💡 Practical Tips
✔ Red light = Check immediately
✔ Green light = System OK
✔ Yellow light = Signal / status indicator
👉 Start diagnosis from:
Fault light
Communication
Power supply
Door & safety signals
⚠️ For reference only. Actual configuration may vary by project.
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