Retrospec LED Display Guide

1. Appearance and Dimensions

The T320 LED product shell is made of white and black PC materials, ensuring good mechanical properties and allowing normal use in temperatures ranging from -20°C to 60°C.

Display dimensions: 49mm (width) x 52mm (height) x 45mm (depth), with a 22mm diameter mounting hole.

2. Functions and Button Definition

2.1 Functions Summary

• Battery Indication
• PAS level Indication
• 6km/h Walk assist function Indication
• Error Codes

2.2 Button Definition

The T320 display has four buttons: Power, Up, Down, and Walk Mode.

Button Layout:

• UP: Increases PAS level.
• DOWN: Decreases PAS level.
• POWER: Turns the display on/off. Short press to turn off, long press to turn on.
• WALK MODE: Activates the 6km/h walk assist function when held for 2 seconds.

3. Precautions

• Do not plug or unplug the meter while the power is on.
• Avoid striking or knocking the display.
• In case of errors or malfunctions, return the display to your local supplier for repairs or replacements.

4. Installation Instruction

With the bike off, loosen the fixing screw and adjust the display position to suit your needs. Ensure the wiring harness connection is secure.

5. Operation Instruction

5.1 Power ON/OFF

Short press the Power button to turn the display on. Short press again to turn off the electric vehicle's power. The display automatically shuts down after 10 minutes of inactivity.

5.2 6km/h Walk assist function

Hold the MODE button for 2 seconds to activate walk assist. The e-bike moves at a constant speed of 3.5 km/h. This function is intended for pushing the bike and should not be used while riding.

5.3 PAS level setting

Short press the UP or MODE button to cycle through the 5 PAS levels (0-5). Level 0 provides no assistance, while Level 5 offers maximum assistance. The display defaults to Level 1 upon startup.

5.4 Battery Indication

Five LEDs indicate battery level. All five LEDs are lit when the battery is fully charged. The last LED flashes when the battery is critically low and requires immediate charging.

6. Error Codes

The display will flash LED lights to indicate error codes if the e-bike's electronic control system fails. Refer to Appendix 1 for detailed error code definitions. The error display can only be exited once the fault is resolved.

LED Flash Error Codes:

• Once: Over Voltage - Check battery, controller, and all connections.
• Twice: Under Voltage - Check battery, controller, and all connections.
• Three Times: Over Current - Check controller and all connections.
• Four Times: Motor not turning - Check motor connection and controller.
• Five Times: Motor Hall Fault - Check motor and connections.
• Six Times: MOSFET Fault - Check controller and connections.
• Seven Times: Motor Phase Loss - Check motor connection.
• Eight Times: Throttle Fault - Check throttle connection.
• Nine Times: Controller Over Temperature or Runaway Protection - Allow system to cool and check connections.
• Ten Times: Internal Voltage Fault - Check battery and connections.
• Eleven Times: Motor Output without Pedaling - Check connections.
• Twelve Times: CPU Fault - Check controller and connections.
• Thirteen Times: Runway Protection - Check battery and controller.
• Fourteen Times: Assistance sensor Fault - Check sensor and connections.
• Fifteen Times: Speed sensor Fault - Check connections.
• Sixteen Times: Communication Fault - Check connections.

7. FAQ

Q: Why can't I turn on the display?
A: Check if the battery is turned on or if the leakage wire is broken.

Q: How to deal with the error code display?
A: Contact the e-bike maintenance station promptly.

8. Version No.

This manual corresponds to the general software version (V1.0) of Tianjin King-Meter Technology Co., Ltd. Display software versions on some bikes may differ slightly from this manual; the actual version prevails.

Diagrams

The display features a graphical representation of mountains with a sun and lightning clouds, symbolizing an adventurous and dynamic experience.