Applicable Systems
Mitsubishi Elevator
Symptoms
Door cannot close. The elevator door close operation has failed. The door remains open and the elevatorcannot depart.
Possible Causes
- Door motor failure or door belt broken
- Door close limit switch not engaging
- Obstruction in door path: passenger or object
- Door control board fault
- Door close timer expired without completion
Troubleshooting Steps
- Step 1: Check the equipment status and fault indicators to confirm the active fault code
Fault indicator or HMI displays code 02 as active - Step 2: Verify all electrical connections, wiring harnesses, and connector seating
All connections secure, no corrosion, loose pins, or damaged wires - Step 3: Check the safety circuit continuity and all safety interlock switches
Safety circuit complete, all interlocks engaged - Step 4: Inspect the specific safety device referenced in the fault (door switch, light curtain, E-stop)
Safety device functional, contacts clean and responsive - Step 5: Verify the brake mechanism: check brake pad wear, spring tension, and air gap
Brake pads within wear limit, spring tension correct, air gap within spec - Step 6: Test the safety function by simulating the fault condition and verifying response
Safety function responds correctly within specified time - Step 7: Reset the fault after fixing the safety device or circuit: press RESET
Fault clears and safety system returns to ready state
How to Reset
To reset: 1) Fix the safety device or circuit fault. 2) Clear the fault on the HMI or controller. 3) Press RESET. Caution: Never bypass safety devices.
Frequently Asked Questions
- Q: What does fault code 02 mean on the Mitsubishi Mitsubishi Elevator?
Fault 02 indicates a safety-related fault. A safety device or circuit has been triggered. Always investigate the root cause before resetting; never bypass safety devices.
- Q: Can I continue operating the equipment with fault 02 active?
No. The equipment has detected a fault condition and has taken protective action (typically stopping or derating). Continuing to operate without fixing the root cause may cause further damage. Always investigate and fix the fault before resuming operation.
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Source: Mitsubishi Elevator Controller F-Board Diagnostic Manual, Mitsubishi Electric Documentation
Category: Elevator
Published: 2026-10-06
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