GUNAI 20 Inch Electric Mountain Bike Instruction Manual

GUNAI 20 Inch Electric Mountain Bike Instruction Manual

PRODUCT PARTS

Product Safety Notice Read This Before You Ride

• Always wear a helmet when riding your electric bike.
• Keep the keys properly. If the unique keys are lost, you will not be able to turn on the bike or replace the battery. If necessary, you should get more spare keys. We don’t have a backup key.
• Make sure your electric bike has a full battery before taking it out to ride.
• Always be aware of local road laws, and follow them.
• Always be aware of local road laws, and follow them.
• Do not ride the bike under the influence of drugs or alcohol.
• Always respect pedestrians.
• Do not ride under wet conditions. The electric bike may slide from under your feet causing injury. wet conditions may damage the electronics and void the warranty.
• For safety reasons, our electric bikes are targeted at adults over 18 years of age. Underage usage of this bike is unadvisable.
• Please refer to the installation video to install the bike correctly and check if any screws are loose.

Package Contents

Carefully check the package contents, if anything is missing or damaged, please contact GUNAI customers vice for support

• 1 x Electric Bike

  ---

• 2 x Pedals

• 1 x Headlight
  

• Fenders

• 1 x Charger

• 1 x Battery
  

• Installation Tool Kit

• 2 x Battery Keys

• 1 x User Manual

Chapter 1 Product Introduction

Installation video of the product

MX25

MX02S/GN88

MX03

GN20

1. Long press “M” Button to turn on the screen.
2. Before turning on the bicycle, please make sure that the key has been turned to the correct position (the reare three positions in total, which are used to turn on, turn off, and remove the battery). The battery of the bicycle is equipped with two keys, please keep it safe and store one of the keys at home.
3. All GUNAI bicycles can be set speed limit. Just enter the setting mode of the LCD meter and adjust parameter of P08 to 25 to limit the maximum speed of the bicycle to 25km/h.The way to enter the LCD meter setting mode: long press “up” and “down” at the same time or long press ” +”and “-” at the same time.
   • Please do not arbitrarily set other parameters unless you have understood the meaning of each parameter.

Product Specifications

Chaper 2 Operation guide

Please perform necessary inspections before riding the GUNAI electric bicycle:

1. Is the battery fully charged?
2. Is the key in the open position?
3. Is the braking system working properly?
4. Is the tire pressure normal?
5. Are the handles and seats of the bike firmly installed without any looseness?
6. Are the front and rear wheels locked?
7. re there any error codes on the LCD screen?

What you need to know about batteries:

1. During riding, frequent braking will result in shorter riding mileage. When the voltage is lower than half, please charge it in time. If you ride under the condition of low voltage for a long time it will affect the battery life.
2. If you do not use an electric bicycle for a long time, please charge the battery regularly. It is recommended to charge the battery once a month. (Because the battery will discharge slowly even when not in use, if the battery is over-discharged, it may cause irreversible damage.)
3. The batteries of any electronic devices (such as mobile phones, cameras, computers, etc.) are not allowed to come into contact with water. If you find that water has entered the battery,please do not use the battery until it is completely dry to avoid burning the battery or fire. Water in the battery may cause damage to the battery/deterioration of life. Damage caused by water in the battery is not covered by the warranty.
4. The battery is not allowed to be stored/used under the scorching sun or at a high temperature above 60°C.Be careful not to drop, shock or squeeze the battery to avoid damage to the battery.
5. When charging the battery, please use the special battery charger provided by GUNAI, and it is strictly prohibited to use non-original chargers.
6. If you want to buy a spare battery, please buy the original battery in the GUNAI store. If you can’t find the purchase link, you can consult GUNAI customer service. If you use non-original chargers or batteries that cause damage to other parts of the bicycle (such as controllers, motors, batteries), you will need to purchase other damaged parts.

How to charge the battery correctly:

1. Whether you want to take out the battery for charging or charge the battery on the bike, you should first plug the charger’s charging port into the battery port/bicycle charging port, and then plug the charger’s plugin to the power source.
   • Please follow this order!!!
2. When the indicator light of the charger changes from red to green, it means that the battery is fully charged. Under normal circumstances, it takes 4-6 hours from a dead battery to a full charge.
3. iN order to ensure safety, the battery should be placed out of the reach of children when charging and there should be no other high-power electronic products or flammable or explosive materials around the battery. It is forbidden to use the charger in an environment with excessive smoke, dust, humidity, and direct sunlight. Do not use the charger during thunderstorms. Please maintain good ventilation and heat dissipation conditions when the charger is working.

Chapter 3 LCD Display Manual

**(MX02S.MX03.MX25.GN88)LCD-M5

**

1. Out shell Size and Material

Out shell material is ABS, Liquid crystal transparent window material is highhardness acrylic.

31.8mm stent is available 22.2mm, 25.4mm,28.6mm Transfer Ring Selection

• Front view

• Side view

• Side view

• Switching view

• Switch Side View

Work Voltage and connection mode

1. Work voltage: DC24V, 36V,48V,60V,64V (which you can choose on the meter), the others you can customized.
2. Connection mode :

Line sequence of the label connector

Instrument Outlet

Table: Line sequence of the label connector table

Notes: Part of the products lead wire use waterproof connection. User cannot seethe color of lead line.

1. Display function
   Speed display, power level display, power indicator, failure waming, total mileage, single mileage, headlight display, single driving time display

2.   Control , setting up functions
   Power switch control, headlight switch control, 6Km/h point control, wheel diameter setting, maximum speed setting, idle automatic hibernation time setting, backlight brightness setting, voltage level setting

3. Communication protocol: UART

All the contents of the display screen (full display in boot IS)

Show content introduction

Headlight The instrument can be manually turned on and the brightness of the sensing environment is automatically turned on (light sensitivity supportis required).

Battery power display BATTERY

Multifunctional display area ODOTRIPABVOLCURRMTM

Total mileage ODO, single mileage TRIP A, single mileage TRIP B, battery currentvoltage VOL, current operating current CUR, remaining mileage RM; Instrument boot time TM

Vehicle mode

Walk boost mode; Cruise: constant speed cruise mode; PAS: Power file position: 0 ~9 adjustable.

Speed display area

Maximum speed MAX, average speed AVG Unit MPH, KM/H The meter will calculate the true speed based on the wheel diameter and signal data

Vehicle Status Display Area

Vehicle Status Code Meaning:

Protocol Vehicle Status Code Meaning

Status
Code(Decimal)| State Meaning| Remarks
---|---|---
1| Current anomaly|
2| Turn the anomaly|
3| Motor phase deficiency|
4| Motor hall anomaly|
5| Brake anomaly|
6| Communication anomaly|

install

• P01: Backlight brightness, the darkest level 1, the brightest level 3;

• P02: Mileage unit,0: KM; 1:MILE;

• P03: Voltage level: 24V,36V, 48V,60V,64V default 36V;

• P04: Dormancy time: 0, not dormancy; Other numbers are dormancy times,

• range: 1-60;Unit minutes;

• P05: Help file bit: 0,3 file mode: 1,5 gear mode:
  P06: Wheel diameter: unit, inch;
  Protocol 2 wheel diameter value: 5.0~50 Precision: 0.1 inch 5S protocol wheel diameter
  value: 0:16 inch, 1:18 inch, 2:20 inch, 3:22 inch, 4:24 inch, 5:26 inch, 6:700 C,7:28 inch; This parameter is related to the meter display speed and needs to be entered correctly;

• P07: Speed gauge magnetic steel number: range:1-100;
  This parameter is related to the meter display speed and needs to be entered correctly;
  If it is an ordinary hub motor, the number of magnetic steel is input directly;If it is a high-speed motor, it is also necessary to calculate the deceleration ratio, and the input data = the number of magnetic steel x deceleration ratio; For example: number of motor magnets 20, deceleration ratio

• 4.3: input data is:86 = 20×4.3

Note: The value here is based on kilometers. When the unit setting is converted from kilometers to miles, the speed value of the display interface automatically converts to the correct mie value, but the speed limit value data set at this menu under the mile interface is not converted. Is inconsistent with the actual speed limit of the mile speed;

• P09: Zero start, non-zero start setting, 0: zero start;1: Non-zero start;
• P10: The drive mode is set to 0:Power Drive (how much power is output is determined by the power file bit, and the switch is invalid at this time).
• 1: Electric drive (by turning the handle drive, the power file bit is invalid at this time).
• 2: Power Driven and Electric Driven Coexistence.
• P11: Help sensitivity setting range:1-24;
• P12: Help start intensity setting range: 1-5;
• P13: Power Magnetic Steel Disk Type Setting 5,8,12 Magnetic Steel Types
• P14: Controller limit value set default 12A range: 1-20A
• P15: Controller under voltage
• P16: ODO zero setting length press key 5 seconds ODO zero
• P17: 0: No enabling cruising: enabling cruising; Automatic cruise optional (valid for protocol 2  only)
• P18: Display speed ratio adjustment range: 50%~150%,
• P19: 0:power bit, 0: 0 file,1: does not include 0 file
• B 0:2 Protocol 1:5 S Protocol 2: Standby 3: Standby

Key Introduction

The specific combination of keys is as follows

Press the button to use the brief

Key operation is divided into short press and long press, and combination key length press Short press is used for rapid/frequent operations, such as the specific key combination position as follows

When riding, you need to modify the powerlspeed file, short press 2.

Toggle display data for multi-function areas during cycling, short click Single key length is mainly used to switch the mode / switch state Composite keys (long presses) are used to set parameters because the operation is complex, which can reduce errors (Short press does not make the composite key, because it is easy to trigger mistakenly, soit is too difficult to do)

Switching liquid crystal display

If the current display is working, long press turn on the screen Will turn off the screen, instead

 Toggle multi-function display area content

Short Can switch the value of the multifunction display area

Set Parameters

Long press A + Will enter the parameter setting interface. Parameters that can be set include, Wheel diameter (in: inches), number of magnetic steel, liquid crystal brightness, low pressure points, etc. (see settings: PO1-P20);

Under Settings Interface, Can be short press or Set the value to perform a minimum-precision unit value operation, you can also long press

Note: due to the upgrade of the company’s products, the content of the product will be different from the specifications, but it will not affeet your normal use.

Chapter 4 Error and Solution

The power can be turned on, but the motor does not work

1. If there is no error code on the screen, please check if there is any damage to the motor cable.
2. Unplug the motor cable and plug it in again. (The interface of the motor cable is on the edge of the rear triangle of the frame.)
3. Enter the setting mode of the screen and check whether the parameters are set incorrectly. You can ask GUNAI customer service for the factory parameters.

Error code

1. If any error codes appear on your screen, please refer to the table on the next page.
2. We recommend that you replug and unplug the wires of the controller and the motor after any error code appears, because the error code is likely to be caused by loose wires.
3. You need to pay attention to the operation one by one when you plug and unplug the wires again, so as not to forget how the wires are connected.
4. If the error code still exists after plugging and unplugging the cable, please take a photo of the error code displayed on the screen and send it to us, then we will solve the problem for you or provide you with effective suggestions.
5. When encountering any Error code, we suggest you contact our email or WhatsApp to facilitate sending photos/videos to each other. This is so that we can solve your problems faster and more effectively.

screen; ©Loose plug; ©The handle is damaged
E09| Controller failure| The controller is damaged.
E10| Communication
(receive) failure| ©The controller is broken:©The screen (instrument) is damaged.
Ell| Communication (transmit) failure| OThe screen (instrument) wire is loose: ©The screen (instrument) is damaged.
E12| BMS failurea| Need to replace the battery protection board.
E30| Protocol error| The parameter of P20 is not set to 0.

Chapter 5 After-sales Service

Warranty Principle

1. After you receive the package, please unpack and install the bicycle on the spot to check whether the bicycle can work normally. If there is any problem, please contact
   our staff in time.

2. If you want to return the product due to non-quality issues (such as non-compliance, dislike, too heavy or too big, etc.), you will have to bear the cost of the return.

3. Slight paint drop, abrasion and scratches are not a quality problem. Because bicycles ar produced in China, they are delivered to you after a long distance and many times of transportation. Therefore, bumps and abrasion during transportation are normal, because we Selling bicycles is not artistic product. If you find too many scratches on the bike or any part of the bike is broken when you open the package, please take a photo and send it to us in time.

4. If you encounter any quality problems. please describe to us in detail and attach the necessary pictures/videos. We will judge the problem based on the pictures/videos you send and provide you with solutions.

Warranty Details

1. If the rider fails to use, maintain and adjust the fault in accordance with the provisions of this manual, it will not be covered by the warranty.
2. When encountering any problems, we suggest you contact our email or WhatsAp to facilitate sending photos/videos to each other.
3. The final interpretation of the warranty belongs to the GUNAI official store.

Instrument, Speed Control Handle, Crank Gear Disk, Front Fork, Front & Rear Shaft, Flywheel, Chain, Charger| 6 months
Headlights, Pedals, Tires, Brake Handles and Other Consumables| 6 months
*If the parts are damaged due to human factors, please pay for the accessories.

If you encounter any problems, please contact us in time and we will try our best to solve them for you. The following is our contact information:

• E-mail: support@gunai.store voiceout_gunai@hotmail.com

• WhatsApp: +86 175 1208 3490 (After sale)
  WhatsApp: +86 178 4101 0701 (Collaborate)

• Facebook: https://www.facebook.com/gunaiofficial/

• For more guiding video, please follow our youtube channel: https://www.youtube.com/@gunaiofficialstore6955

• **** If you need to buy replacement parts, please go to our 8official website: http://www.gunai.store/

Scan the code to view the electronic version of the manual in the corresponding national language.

To view this manual in your language, please visit the https://gunai.store/pages/user-manual page

https://gunai.store/

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