Engwe YL81F E-bike Color Display Screen Meter User Manual

1. Introduction

The Engwe YL81F is an intelligent liquid crystal display meter designed for electric bicycles. It provides essential riding information and allows for personalized parameter settings to enhance your e-bike experience. This manual will guide you through the setup, operation, and maintenance of your YL81F display.

2. Setup and Installation

2.1 Important Customization Note

Before or after purchase, it is crucial to contact customer service and provide the serial number located on the back of your display. The YL81F display utilizes various communication protocols, and providing your serial number ensures that our engineers can customize a new, plug-and-play display specifically for your e-bike, guaranteeing compatibility and optimal performance.

2.2 Mounting the Display

The YL81F display is designed for handlebar mounting. Ensure your handlebar has a diameter of approximately 31.8mm for a secure fit. Use the provided clamps to attach the display firmly to your e-bike's handlebar in a position that offers clear visibility while riding.

2.3 Connecting the Display

The display connects to your e-bike's controller via a 5-pin waterproof connector. Carefully align the pins and push the connector firmly until it clicks into place. Ensure the connection is secure to prevent water ingress and ensure reliable operation.

3. Operating Instructions

3.1 Display Interface Overview

The YL81F display provides a clear overview of your e-bike's status and riding data. Refer to the diagram below for an explanation of each functional area:

Key indicators include:

• Battery Level: Shows remaining battery charge.
• Error Code: Displays diagnostic codes if an issue occurs.
• Current Speed: Real-time riding speed.
• Walk Boost: Indicates when walk assist mode is active.
• Trip Odometer: Distance covered in the current trip.
• Odometer: Total distance covered by the e-bike.
• Max Speed: Highest speed achieved during the current trip.
• Average Speed: Average speed during the current trip.
• Light ON/OFF: Indicates headlight status.
• Speed Unit: Displays speed in KM/H or MPH.
• Cruise: Indicates when cruise control is active (if enabled).
• PAS Level: Shows the current Pedal Assist System level.
• Value and Unit: Displays various values and their corresponding units (e.g., kcal, Wh/Ah, mile/h).

3.2 Basic Controls (K5 Buttons)

The display is operated using the K5 buttons, typically located on a remote control unit attached to the handlebar. These buttons allow you to navigate menus and adjust settings.

3.3 Personalized Parameter Settings

To enter the personalization parameter setting interface, press and hold the '+' and '-' keys simultaneously for more than 2 seconds. Use the '+' and '-' buttons to navigate through the options and the power button (or a dedicated 'Set' button) to confirm selections.

• 01P Backlight Brightness: Adjusts display brightness (01 = darkest, 03 = brightest).
• 02P Metric/Imperial Unit: Selects measurement units (00 = metric, 01 = imperial).
• 03P Rated Voltage: Sets the rated voltage (24V, 36V, 48V, 52V, 60V).
• 04P Auto Power Off Time: Sets inactivity time before auto-shutdown (00-60 minutes; 00 disables auto-off). Factory default is 10 minutes.
• 05P Power Assist Gear Range: Configures available PAS levels (e.g., 0-3, 1-3, 0-5, 1-5, 0-9, 1-9 gears).
• 06P Wheel Diameter: Sets wheel diameter (1-50 inches).
• 07P Speed Sensor Magnet Number: Configures the number of magnets on the speed sensor (1-255 pcs).
• 08P Speed Limit: Adjusts the maximum speed limit (1-62 mile/h or 1-100 km/h). Note: Maximum adjustable speed limit may vary with different communication protocols.
• 09P Start Mode: Selects between zero start (00) or non-zero start (01).
• 10P Drive Mode: Chooses drive modes: 00 (Assisted drive only), 01 (Electric drive only), 02 (Assisted and electric drive coexist).
• 11P Booster Sensitivity: Adjusts how sensitively the controller detects booster sensor magnets to start the motor.
• 12P Boost Start Strength: Sets the relative strength of the PWM signal output from the controller when Boost starts (0-5, 0 being weakest, 5 strongest).
• 13P Booster Sensor Magnets: Sets the number of magnets for the booster sensor (5-12).
• 14P Controller Current Limit: Adjusts the controller's current limit (1-50A).
• 15P Battery Undervoltage: Sets the battery undervoltage value based on the rated voltage.
• 16P ODO Zero Setting: Resets total mileage (00 = no reset, 01 = total mileage reset).
• 17P Controller Cruise Setting: Enables or disables cruise control (00 = disable, 01 = enable).
• 18P Pushbutton 6km Push: Enables or disables the 6km/h walk assist function (00 = disable, 01 = enable).

4. Maintenance

4.1 Cleaning

The YL81F display has an IPX6 waterproof rating, meaning it is protected against high-pressure water jets from any direction. You can clean the display with a damp cloth. Avoid using harsh chemicals or abrasive materials that could damage the screen or casing.

4.2 Connection Checks

Periodically check the 5-pin waterproof connector to ensure it remains securely fastened and free from dirt or corrosion. A loose connection can lead to intermittent display functionality.

4.3 Storage

When not in use for extended periods, store the e-bike and display in a location where the temperature remains within the storage temperature range of -30℃ to 70℃ (-22℉ to 158℉).

5. Troubleshooting

5.1 Display Not Powering On

• Check all cable connections, especially the 5-pin connector, to ensure they are secure.
• Verify that the e-bike battery is charged and properly connected.
• If the display has an auto power-off feature enabled (04P setting), ensure you are not exceeding the set inactivity time.

5.2 Error Codes Displayed

If an error code appears on the display, note the code and refer to your e-bike's main controller manual or contact customer support for specific diagnostic information. Error codes indicate issues with various e-bike components.

5.3 Incorrect Speed or Mileage Readings

• Check the wheel diameter setting (06P) to ensure it matches your e-bike's wheel size.
• Verify the speed sensor magnet number setting (07P) is correct.
• Inspect the speed sensor for damage or misalignment.

5.4 Unexpected Motor Behavior (e.g., no assist, sudden starts)

• Review the 'Start Mode' (09P) setting (Zero start vs. Non-zero start).
• Check the 'Drive Mode' (10P) setting to ensure it aligns with your desired riding style (Assisted, Electric, or Coexist).
• Adjust 'Booster Sensitivity' (11P) and 'Boost Start Strength' (12P) if the assist feels too weak or too strong at startup.

6. Specifications

7. Warranty and Support

For any issues, technical assistance, or warranty claims, please contact the seller or Engwe customer service. Remember to provide your display's serial number for efficient support, especially if you encounter compatibility issues or require a replacement.

8. User Tips

• Serial Number is Key: Always keep a record of your display's serial number. This is vital for customization and support, as mentioned in the setup section.
• Customize for Your Ride: Take the time to explore the personalized parameter settings (01P-18P). Adjusting wheel diameter, speed limit, and drive mode can significantly improve your riding experience and ensure accurate data.
• Check Connections Regularly: A quick check of the 5-pin connector before each ride can prevent unexpected disconnections and ensure consistent performance.
• Understand Error Codes: If an error code appears, don't ignore it. It's the display's way of telling you something needs attention. Consult your e-bike's manual or contact support.