Xizi Otis Elevator Manual Fixed

| Fault Code | Description | Likely Cause | Solution | | :--- | :--- | :--- | :--- | | | Safety Circuit Open | Safety string broken (pit, car top, or machine room). | Check safety switches (buffer, safety gear, emergency exit). | | 21 | Drive Fault | Inverter overload or hardware error. | Reset power. Check motor resistance and encoder wiring. | | 22 | Encoder Fault | Encoder signal lost or noisy. | Check encoder cable shielding and connections. | | 23 | Speed Deviation | Elevator speed does not match command. | Check brake opening; ensure brakes are fully lifting. | | 41 | Door Lock Fault | Door lock circuit is open. | Check hall door locks and car door locks. Clean contacts. | | 42 | Door Open Timeout | Doors failed to open within set time. | Check door motor, belt tension, and guide shoes. |

Before performing repairs, verify the elevator's current state using the control panel's display. xizi otis elevator manual fixed

: Functions as the interface between the OTIS LCBII control board and the inverter. The AMCB2 Guidelines Manual details parameters for speed, acceleration, and leveling. ACD2-MR System | Fault Code | Description | Likely Cause