Error Code: Err41
Sub-code: 101 – Safety circuit signal disconnected
If your NICE3000new series elevator controller displays error code E41, it typically points to a safety circuit fault. This guide explains the possible causes, step-by-step troubleshooting, and important wiring considerations for technicians.
Troubleshooting Steps for Error Code 41 on NICE3000new
1.Inspect safety circuit switches – Ensure each switch is in the correct working state.
2.Verify external power supply – Check if the input voltage is within the correct range.
3.Check safety circuit contactor operation – Confirm it engages and releases properly.
4.Test safety feedback contacts – Ensure correct NO (Normally Open) or NC (Normally Closed) configuration.
5.If the controller display stays off after power reset, check the power supply and mainboard.
Safety Circuit & Wiring Information
1.The wiring diagram provided is for non–new standard safety door lock circuits for the NICE3000new series.
2.Wiring methods can vary by manufacturer; always follow the on-site wiring diagram.
3.This troubleshooting also applies to multiple controller models within the NICE3000new series.
How the Safety Circuit Works in NICE3000new
The mainboard inside the controller is designed with three high-voltage detection points: X25, X26, X27.
These are used for:
1.Safety circuit detection
2.Landing door lock detection
3.Car door lock detection
The cabinet transformer powers the safety circuit at AC110V.
It will open under the following conditions:
1.Incorrect R, S, T phase sequence (some newer designs omit phase protection)
2.Cabinet emergency stop is activated
3.Any safety device electrical switch is open in the elevator system
4.Transformer power supply is faulty
5.24V switching power supply is faulty
Startup Requirements
The elevator will start only if:
1.All three high-voltage detection points receive correct input
2.Three high-voltage indicator LEDs illuminate.
This confirms the safety circuit and door lock circuit are both operating normally.
