| Code | Description (Verified) | Common Cause | Recommended Action | |------|------------------------|---------------|---------------------| | | Safety chain open – governor overspeed | Mechanical overspeed or faulty governor switch | Reset governor; test overspeed switch manually. | | E-4004 | Buffer switch activated | Car or counterweight impacted buffer at terminal floor | Check terminal slowdown limits; inspect buffers. | | E-4010 | Pit emergency stop switch open | Accidental activation or water in pit pump | Reset switch; check for flooding or debris. | | E-4025 | Door contactor monitoring failure | Welded auxiliary contact or software mismatch | Replace contactor; verify feedback logic. |
: Replace STMs immediately to unblock the elevator. 1576 Brake Blocked Machine brake check is required; elevator is blocked. Perform Brake Emergency Stop Counter (BESC) reset or check. Critical Safety & Drive Faults schindler 5500 error codes verified
This fatal error occurs when the controller detects encoder activity while the car should be idle. It often points to brake slippage or machine issues. 0019 - Watchdog Reset: | Code | Description (Verified) | Common Cause