Error Code Err92 – Understanding the “Inconsistent Detection Point” Fault in NICE3000-Controlled Elevators
If your elevator equipped with a NICE3000 control system reports error code Err92, this article will help you understand what it means, why it occurs, and how to troubleshoot it effectively. Whether you’re a technician, distributor, or service provider, this guide breaks things down in a simple, professional way.
What is Err92?
Err92 refers to an inconsistent detection point error. In plain terms, it means that the controller has detected signal feedback that doesn’t align with the expected logic during certain operations — often related to door status or inspection modes.

Common Situations That Trigger Err92
This error typically occurs in the following scenarios:
- Incorrect door open/close limit signals during bypass operation.
- Improper reset from pit inspection mode, such as failing to disconnect the door lock signal before switching back to normal.
- Abnormal signals or communication issues from connected expansion boards.
How to Troubleshoot Err92
Case 1: Elevators Without Expansion Boards
If your elevator uses a standard configuration with no additional expansion boards:
- Check door limit switches and wiring: Ensure that door open/close limit signals are correctly set and connections are intact.
- Monitor parameter F5-35: Confirm that door position signals are responding correctly in the controller.
- Inspect car top board: Make sure the wiring and indicator lights are functioning properly.
- Review parameter F5-25: Double-check if the system parameters related to door signals are configured as required.

Case 2: Elevators With Expansion Boards
For systems equipped with additional expansion boards, focus on communication and configuration:
- Verify board communication status: Make sure terminal resistors are in place, and DIP switches are correctly set.
- Check FA-58 settings: Input the correct identifier for the expansion board.
- Review FA-59 version info: Confirm that the firmware version of the board is recognized properly by the system.
Summary
The elevator Err92 fault code in NICE3000-controlled elevators typically points to a signal mismatch — often due to door signals, inspection mode transitions, or expansion board settings. With structured troubleshooting of signal wiring, parameter settings, and communication status, this fault can usually be resolved quickly and confidently.