Haytrix LCD-P5C E-Bike Display User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Haytrix LCD-P5C E-Bike Display. This display is designed to provide essential information and control functions for electric bicycles and scooters, enhancing your riding experience.

The LCD-P5C display features a full lamination LCD screen with a high-hardness acrylic transparent window and tempered glass for clarity and durability. It is IP67 waterproof, making it suitable for various outdoor activities.

Haytrix LCD-P5C E-Bike Display mounted on a bicycle handlebar.

2. Setup

2.1. Physical Installation

The Haytrix LCD-P5C display is designed for easy mounting on most handlebars. The adjustable mount is compatible with handlebar diameters of 22.2mm, 25.4mm, 28.6mm, and 31.8mm, ensuring a secure and perfect fit.

1. Choose a suitable position on your handlebar for optimal visibility and access to controls.
2. Secure the display mount to the handlebar using the provided fasteners.
3. Adjust the angle of the display for comfortable viewing.

The adjustable mount fits handlebar diameters of 22.2mm, 25.4mm, 28.6mm, and 31.8mm.

2.2. Electrical Connection

The display connects to your e-bike's controller via a waterproof cable. Ensure your controller uses the UART2 communication protocol for proper functionality. The display supports DC24V, 36V, 48V, and 60V systems.

The display is available with either a 5-Core or 6-Core waterproof cable. Please ensure you have the correct connector type for your system.

Example of a 5-Core Waterproof Cable connector.

Example of a 6-Core Waterproof Cable connector.

Line Sequence of the 5-Core Connector:

Important: Part of the product's lead wires use waterproof connections, so the color of the lead line may not be visible. Always ensure the correct pin configuration when connecting.

2.3. Initial Settings (P-Settings)

To access and modify settings, long press the '+' and '-' buttons simultaneously. Use the power button to navigate through parameters and the '+' and '-' buttons to adjust values. Long press '+' and '-' again to save and exit.

• P02: Mileage Unit: Set your preferred unit (e.g., km or miles).
• P03: Voltage Level: Set to match your battery (24V, 36V, 48V, 60V, 64V). Default is 36V.
• P04: Dormancy Time: Set the idle time before the display enters sleep mode (1-60 minutes, 0 for no dormancy).
• P05: Help File Bit: 0, 3 file mode; 1, 5 gear mode.
• P06: Wheel Diameter: Enter the wheel diameter in inches (precision 0.1). This is crucial for accurate speed display.
• P07: Speed Gauge Magnetic Steel Number: Range 1-100. This parameter affects speed accuracy. For ordinary hub motors, input the magnetic steel number directly. For high-speed motors, calculate: (magnetic steel number) × (deceleration ratio).
• P08: Speed Limit: Range 0-100 km/h (100 means no speed limit). Note that if the unit is converted to miles, the display value automatically converts, but the speed limit value set here remains in km/h.
• P09: Zero Start / Non-Zero Start: 0 for zero start, 1 for non-zero start.
• P10: Drive Mode: 0 for Power Drive (power output determined by power file bit), 1 for Electric Drive (handle drive).
• P11: Help Sensitivity Setting: Range 1-24.
• P12: Help Start Intensity Setting: Range 0-5.
• P13: Power Magnetic Steel Disk Type Setting: 5, 8, 12 Magnetic Steel Types.
• P14: Controller Limit Value: Default 12A, range 1-20A.
• P15: Controller Low Power.
• P16: ODO Zero Setting: Long press power button for 5 seconds to clear ODO.
• P17: Auto Cruise: 0 for no cruising, 1 for enabling cruising.
• P18: Display Speed Ratio Adjustment: Range 50% - 150%.
• P19: 0 Power Bit: 0:0, 1: does not include 0.
• P20: Protocol: 0:2 Protocol (Not Set).

3. Operating Instructions

3.1. Basic Functions

1. Power On/Off: Press and hold the power button to turn the display on or off.
2. Multi-function Display Switch: Short press the power button to cycle through ODO (Total Mileage), TRIP (Single Mileage), VOL (Battery Voltage), and CUR (Current). ODO, TRIP, VOL, and CUR are displayed by default after each power-on.
3. PAS Level Adjustment: Short press the '+' button to increase the PAS (Pedal Assist System) level by 1. Short press the '-' button to decrease the PAS level by 1. The default PAS level is PAS1.
4. Front Light Control: While the display is on, press and hold the '+' button to turn the front light on or off.
5. Walk Mode Function: When the e-bike is stationary, press and hold the '-' button to enter 6KM/h walk mode.
   • Locked Mode: After pressing and holding the '-' button, the e-bike remains in walk mode even after releasing the button. To exit, press and hold the '-' button again or apply the brake.
   • Non-Lock Mode: Press and hold the '-' button to activate walk mode. Release the button to exit walk mode.
6. Speed Mode Display: On the normal speed display interface, short press the '+' and '-' buttons simultaneously to cycle through Average Speed, Maximum Speed, and Real-time Speed. The default display is Real-time Speed.

3.2. Display Content Overview

The display provides a comprehensive overview of your e-bike's status:

Key metrics displayed on the LCD-P5C screen.

• Battery Indicator: Shows current battery level.
• Speed Bar: Visual representation of current speed.
• Speed: Digital display of current speed (km/h or mph).
• PAS: Current Pedal Assist System level.
• Headlight Indicator: Shows if the headlight is on.
• Multifunctional Display Area: Displays ODO (Total Mileage), TRIP (Single Mileage), VOL (Battery Voltage), CUR (Current), and Error codes.

3.3. Status Icons

The display uses various icons to indicate specific operational statuses:

• Cruise ON: Indicates cruise control is active.
• Braking: Indicates brakes are engaged.
• Walk: Indicates walk mode is active.

4. Maintenance

To ensure the longevity and optimal performance of your Haytrix LCD-P5C display, follow these maintenance guidelines:

• Cleaning: Wipe the display screen with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the screen or casing.
• Water Protection: The display is IP67 waterproof, offering reliable protection against water splashes and rain. However, avoid submerging the unit in water for extended periods.

The IP67 waterproof rating ensures protection against moisture damage.
• Screen Care: The display features tempered glass for clarity and durability. While robust, avoid sharp objects or excessive force that could scratch or crack the screen.


Full laminate display with tempered glass for clear vision.

• Connection Integrity: Periodically check all cable connections to ensure they are secure and free from damage.
• Storage: When not in use for extended periods, store the e-bike and display in a dry, temperate environment.

5. Troubleshooting

5.1. Error Codes

The display may show error codes to indicate specific issues. Refer to the table below for common error codes and their meanings:

5.2. Common Issues and Solutions

• Display Not Working / Abnormal Use:

  Cause: The product protocol is UART2. If your controller's protocol does not match, it may result in abnormal use.

  Solution: Verify your controller's communication protocol. The display is only compatible with UART2 protocol controllers. You can check the controller's appearance, manual, or contact the controller's seller.

  Video illustrating the importance of controller compatibility for the display.
• Speed Limit Issues:

  Cause: Speed limits can be imposed by either the controller or the display. By default, the display has no speed limit (P08 set to 100).

  Solution: If your controller has a speed limit, the display will only show the corresponding speed, and the limit cannot be lifted via the display. If the speed limit is set on the display (P08), you can adjust it through the P-settings menu.

• ODO (Total Mileage) Reset:

  Solution: To clear the ODO, navigate to the P16 menu interface and long press the '+' button for 5 seconds.
• Reset to Factory Defaults:

  Solution: To reset all settings to factory defaults, navigate to the P16 menu interface and long press the '-' button for 2 seconds. Note: This operation will not clear the ODO.

6. Specifications

Below are the technical specifications for the Haytrix LCD-P5C E-Bike Display:

Dimensions and key specifications of the LCD-P5C display.

7. User Tips

• Protocol Compatibility is Key: Always confirm your e-bike controller uses the UART2 protocol. Mismatched protocols will lead to the display not functioning correctly.
• Speed Limit Awareness: Understand that speed limits can originate from either the display or the controller. If your controller imposes a speed limit, the display cannot override it.
• Bluetooth Functionality: Only specific models (e.g., H8, M5C-2) support Bluetooth connectivity for mobile applications. Check product details for your specific model's capabilities. The companion app is compatible with both Apple and Android systems.
• Adjusting Speed Limit (P08): To change the speed limit, enter the P-settings menu (long press '+' and '-'), navigate to P08 using the power button, adjust the value with '+', then long press '+' and '-' to save and exit.
• No Returns for Non-Quality Issues: Be aware that returns or exchanges are generally not accepted for issues unrelated to product quality, especially concerning compatibility.

8. Warranty and Support

For warranty information, technical support, or further inquiries, please contact the manufacturer or your seller. You can also visit the official Haytrix website for additional resources: www.haytrix-display.com.

A detailed user manual in PDF format is available for download: Haytrix LCD-P5C User Manual (PDF).