Contact Information
Thank you for choosing Knaap Bikes. Please read this manual before using the C961 Display.
Appliance House Ltd
Tel: 0330 002 0229
E-mail: support@appliancehouse.co.uk
Address: Appliance House Ltd, Setantii Building, Amy Johnson Way, Blackpool. FY4 2RP.
Website: www.appliancehouse.co.uk
Material & Color
The C961 display is made of ABS and is designed to perform well under temperatures from -20° to 60° C. Available colors: Black, White. Size is measured in mm.
Description of Display Image: The Bafang C961 display shows digital readouts for speed (Km/h or Mile/h), assist level, time (00:34), total distance (0 Km), and battery status. It also displays the model number "C961".
Operation & Installation
Caution: Do not plug in or unplug this display when the power to the unit is on.
Installation
Install the display and button control on the handlebar and adjust its location. Plug it into the controller with the power off.
ON/OFF
To turn the unit on, press and hold the ⏻ button to start the display. A long press of the ⏻ button again will switch it off.
The display switches off automatically if there is no activity for ten minutes (default).
Safety & Maintenance Icons
- ⚠️ [Avoid Collisions]: Protect the display's membrane to provide water-resistant performance.
- ⚠️ [Reset Parameters]: Do not attempt to reset parameters if the display is not working.
- ? [Service]: Call for service if the C961 display is not working.
Walking Assist
Press and hold the □ button [or equivalent button for walking assist] to start the walking assist. You will see the walking icon (?) on the display, and the motor will move the bicycle or vehicle at 6 km/h.
Note: This function is designed for walking alongside only. Please do not use this function when riding.
Backlight
Press and hold the □ button [or equivalent button for backlight] to turn on the C961's backlight screen. If a front light is configured, it will switch on as well. Press and hold again to switch it off.
Note: The automatic backlight is available only if the controller offers this function. If the controller has a light sensor, the backlight & front light will switch on automatically according to the level of darkness. This automatic function is off when the display is in manual mode.
Power Level
The display is integrated with the controller to provide several levels of power. Press + or - to change the levels. The default range is 0 - 3, where 0 means no output, and 3 means maximum output. The default switch-on is level 1.
Battery Capacity
The battery capacity is indicated by a segmented bar. Four sections highlight when the battery is full. The battery icon flashes at 1 Hz when power is low.
- <20%
- 20%-40%
- 40%-60%
- 60%-80%
- 80%-100%
Distance (Trip and Odometer)
Press ⏻ to shift between TRIP and TOTAL (Odometer).
Description of Distance Display Examples: Two examples show the display: one indicating TRIP distance (e.g., 8.1 Km) and the other indicating TOTAL Odometer distance.
TRIP Reset
With the power on, press and hold both ⏻ and □ [or equivalent buttons] to clear the TRIP distance.
Error Codes
When something goes wrong with the system, an error code will flash on the display. Check the details on the attached list.
Description of Error Display Image: The display shows "Er 06", indicating an error condition.
The motor will stop working in the event of an error. The motor will only work again once the error is resolved.
| Error code | Definition |
|---|---|
| 04 | Throttle not returning to zero state |
| 05 | Throttle abnormality |
| 06 | Low voltage protection |
| 07 | Over voltage protection |
| 08 | Hall sensor abnormality |
| 09 | Phase line abnormality |
| 10 | Controller overheat |
| 11 | Temperature sensor in controller abnormality |
| 12 | Current sensor abnormality |
| 21 | Speed sensor abnormality |
| 22 | Communication abnormality in BMS |
Display Settings
Preparation
Make sure the connections are good, then power on.
Setting Mode
Press and hold ⏻ to turn on the display. Press and hold the + and □ [or equivalent buttons] to enter the setting mode.
Unit
Press □ [or equivalent button] to change the unit between Km and Mile.
Setting the Speed Limit
To limit the speed range (from 15 Km/h to 40 Km/h), press + or - to change the limit up or down.
Description of Speed Limit Display: The display shows "25" indicating a speed limit setting.
Press ⏻ to save and proceed to backlight settings.
Backlight
Press + or - to change the brightness (range is 1 to 8).
Description of Backlight Display: The display shows "BL 4" indicating backlight level 4.
Press ⏻ to save and proceed to time setting.
Time Setting
Press + or - to change the hour, then press ⏻ to save and go to the minute setting. Press + or - to change the minutes.
Description of Time Display: The display shows "08:08" indicating the time setting.
Press ⏻ to save & exit.
Note: The settings go into effect after restart.
Advanced Setting
Press and hold ⏻ to start the display. Press and hold both + and □ [or equivalent buttons] to enter setting mode.
Press + or □ [or equivalent buttons] and do not release, meanwhile press ⏻ eight times to go to the advanced setting menu.
Wheel Size Setting
Press + or - to change the wheel size. The range is from 8 to 32 inches.
Description of Wheel Size Display: The display shows "26 88" indicating a wheel size setting.
Press ⏻ to save and proceed to sleep time interval setting.
Sleep Time Interval Setting
Press + or - to change the time, range from 0 to 60 minutes.
Description of Sleep Time Display: The display shows "oF 10" indicating a sleep time of 10 minutes.
The display will sleep and cut off power after no operation on the system for the selected time. Press ⏻ to save and skip to level amount setting.
Power Level Amount Setting
Press + or - to change the amount. The range is from 2 to 9 levels (excluding level 0).
Description of Power Level Amount Display: The display shows "dH 3" indicating power level amount setting.
Press ⏻ to save and exit.
Note: The settings go into effect after restart.
FAQ
Q: Why does the display not power on?
A: Please check that the battery is connected and has power. Then check all the wires and connections. Then press the ⏻ button again. If this fails, please see your service technician.
Q: What should I do when an error code is displayed?
A: Please check the error code list. Sometimes powering down the unit (press ⏻), then unplugging the display, leaving it unplugged for two minutes, and then plugging it back in and turning it on will reset and correct the error. Please call your service technician if the user cannot remove the error.
Warranty
Suzhou Bafang Electric Motor Science-Technology Co Ltd (hereinafter referred to as "8FUN") warrants that any products bought from 8FUN that are defective in materials and/or workmanship will be repaired or replaced, as 8FUN elects, if such defect appears within the warranty period as measured from the date of delivery from the factory to the purchaser. The warranty period starts from the date of Ex-factory and is in effect for 24 months thereafter.
8FUN Limited Warranty Exclusions:
- Damage, failure, and/or loss caused by refitting, neglect, improper maintenance, competition, commercial purpose, misuse, abuse, or accident.
- Damage, failure, and/or loss caused by shipping.
- Damage, failure, and/or loss caused by improper installation, adjusting, or repairing.
- Damage, failure, and/or loss exclusive to material and workmanship, e.g., failure to follow instructions by consumers.
- Damage, failure, change, and/or loss caused to the product's appearance and surface which does not affect its function.
- Damage, failure, and/or loss caused by unauthorized service or installation.
- Damage, failure, or loss caused by normal wear and tear.
- Damage, failure, or loss caused by events beyond the control of 8Fun.
8FUN reserves the right to, and is only responsible for, repairing or replacing the warranted products.
In the event that bike manufacturing or distributing companies encounter quality problems when using or selling 8FUN products, they should report the purchase order number and products' serial number to the 8FUN technology service department, who will determine if the products are under warranty. If so, 8FUN will offer repair or replacement for free. All removal, replacement, and return-to-factory shipping expenses incurred during the warranty process shall be paid by the customer.
Should 8FUN parts on complete bikes need repair, please contact the bike manufacturer or reseller directly. For products bought through channels other than from 8FUN, please contact the reseller directly.
Should the above-mentioned warranty contravene existing Chinese laws, subject to state laws, 8FUN reserves the right to partially or completely modify the warranty without prior notice.
Software Version
This C961 adopts Bafang protocol V4.0, and is only warranted to work with a Bafang controller installed with this protocol. Errors may occur if used with other protocols.
