Appearance and Size Materials and Colour • KD21C product’s shell and fixing bracket are made of ABS and Nylon. The LCD window lens is made from hard acrylic. These materials are suitable for working in temperatures ranging between -20 and +60 oC.
Page 3
Summary of functions and Buttons This display provides a host of useful functions and displays for Juicy Bikers: ● Battery charge level ● Power assist level ● Speed Display in MPH or KM/H ● Trip distance and cumulative distance ● 6km/h walk assistance / start assistance ●...
2. Using the display The screen is best explained by a diagram… Just 3 buttons We use just 3 buttons to both use and adjust the display. These are: MODE, UP and DOWN Before and during your rides Power On/Off Hold down the MODE button and the display will switch on and light up (if you’ve remembered to switch on your battery first…).
Page 5
Walk assist mode Press and hold the DOWN button for 2 seconds and your e-bike motor will start to run at a uniform speed of 6 Km/h and will continue to do so whilst you press that button. The display will show “P”...
Battery Indicator The battery bar shows the remaining capacity of the battery. When a l l the battery charge has been used its indicator will start to flash – you should definitely charge the battery when this happens. Low Voltage Flash Battery Indicator Error Code Information The display can help enormously should there ever be a problem with any of the electrical...
Page 7
Trip Distance Clearance tC indicates single trip distance clearance settings. Press UP or DOWN to choose Y or N to clear the current trip distance. Then press MODE to confirm and exit. rip Distance Clearance Settings Interface Backlight Contrast settings bL indicates the contrast setting for the backlight.
General Parameter Settings Hold both UP and DOWN for 2 seconds enters User Settings, then hold both MODE and DOWN to access the following General Parameter Settings. Wheel Diameter Settings Ld indicates the settings for wheel diameter. Selectable values include 16,18,20,22,24,26,700C and 28. Press UP or DOWN to select the correct value to match the wheel diameter.
Page 9
4 (Very) Advanced Settings! There are 8 settings in the Advanced Settings interface. None of these should need changing when the unit arrives and should only be altered by someone who fully understands their purpose. They are: Battery Power Bar (VOL), Power Assistance Levels and Ratio (PAS), Over- Current Protection (CUR), Power Assistance Sensor Direction (RUN), Speed Sensor Sensitivity (SCN) and Magnet Number (N) and Sensor Number (SPS), Throttle Function (HL), System (DLY) and Power-on Password Settings (P2).
Page 10
Power Assistance Level Settings 1. Power Assistance: Number of Levels You can select how many levels of assistance are provided by the display. You can choose to have 3, 5, 7 or 9 levels Each range of levels may also include zero: 0-3 / 1-3, or 0-5 / 1-5, or 0-7 / 1-7, or 0-9 / 1-9. The default mode is 0-5 i.e.
Page 11
Power Assistance Sensor Settings 1. Setting the Direction of the Power Assist Sensor (PAS) PAS refers to the power assist sensor settings. The first setting in this menu chooses the direction of rotation for the pedal sensor disk. “run-F” means clockwise, while “run-b” means anti-clockwise.
Page 12
Speed Sensor Selection SPS refers to the number of sensors used by the display to measure the speed of rotation of the wheels. A Juicy Bike normally uses one sensor, concealed within its motor. Press UP or DOWN to select the quantity of sensors (the range is from 1 to 9), and hold MODE to confirm and return to previous menu.
System Settings Delay time settings of battery power DLY shows how often the battery voltage is monitored in real-time. Press UP or DOWN to select a frequency period of 3, 6 or 12s, then press MODE to confirm. The default frequency is every 3s. It is sometimes useful to set a longer delay to overcome the effect of “voltage sag”...
Page 14
2. Walk Assist Button PUS refers to whether the UP button can be used to help when walking with the bike. Press UP or DOWN to choose Y or N. Y means walk assist is enabled when the UP button is held whilst walking alongside the bike. The default value is Y.
Page 15
Power-on Password Settings If a password has already been set, to secure your display, you will need to enter it at setting P2, in order to make any new changes to password settings. The default power-on password is 2222. Press UP or DOWN to enter each digit in turn. Pressing MODE confirms each digit one by one. After the last digit, press MODE to confirm and then you can choose whether to enable the password.
Standard Juicy Bike Warranty is applicable to cover for replacement in the event of faults arising from manufacturing defects subject to the display being used with due care as outlined above and for 12 months from purchase. See the Juicy Bike Website (www.JuicyBike.co.uk) for full terms.
Page 17
Attached list 1:Error code definition Error Code Definition Current Abnormality Throttle Abnormality Motor Abnormality Motor Hall Signal Abnormality Brake Abnormality Communication Abnormality Attached list 2: Personal Parameter settings Settings item Screen display Battery Power Bar Settings Power assistant level Settings Over-current Cut Settings Power Assistant Sensor Settings Speed Sensor Settings...
Page 18
Attached list 4:symbol definition Symbol Definition Trip distance clearance Backlight Unit Voltage Wheel diameter Speed limit Controller over-current cut Backward Forward Sensitivity of PAS Speed sensor Power delayed time Throttle power assist walk Throttle-changing Button push Slowly start up Password Recover default...
Need help?
Do you have a question about the KD21C and is the answer not in the manual?
Questions and answers