Elevator Technician how-to
How to Troubleshoot a Door That Won’t Close
Door problems are the most common elevator service calls.
Quick answer
Door problems are the most common elevator service calls. In short: watch; check; test, then complete the remaining steps below.
Step by step
Watch the door cycle and listen for unusual sounds.
Check the door sill and tracks for debris.
Test the door edge and light curtain for blockages or faults.
Inspect the door operator, belts and linkages.
Check controller signals and door circuit wiring.
Adjust or replace parts and test several full cycles.
Safety reminders for elevator technicians
- Follow lockout/tagout before working on equipment
- Use fall protection in hoistways and on car tops
- Never work under a car without proper blocking
- Treat all circuits as energized until tested
Key terms
Traction elevator · Hydraulic elevator · Machine-room-less (MRL) · Hoistway · Pit · Controller: see the full elevator technician glossary.