Name: MB 400
Brand: YARDFORCE
Rating: 9 (113 reviews)

Question 1

How to install the perimeter cable?

Accepted Answer

The cable must be installed following the instructions in the manual. It defines the mowing area and should be laid flat, without loops, about 30 cm from obstacles. Secure it with the provided pegs.

Question 2

What to do if the robot does not return to the base?

Accepted Answer

Check that the charging station is properly connected and that the perimeter cable is intact. Make sure the return path is clear. If the problem persists, clean the charging contacts.

Question 3

Can the robot be used in the rain?

Accepted Answer

The robot is equipped with a rain sensor that automatically returns it to the base when it rains. It is not designed for mowing in heavy rain.

Question 4

How to replace the blades?

Accepted Answer

Turn off the appliance and remove the battery. Use a screwdriver to unscrew the worn blades. Replace them with identical new blades and tighten the screws to the correct torque. Always replace all blades at the same time.

Question 5

What is the battery life?

Accepted Answer

The battery life is about 60 minutes depending on mowing conditions (grass height, slope, etc.). The battery takes about 120 minutes to fully recharge.

Question 6

Can the robot mow on slopes?

Accepted Answer

Yes, it is designed for slopes up to 25%. Beyond that, it may lose traction. Install the perimeter cable respecting the slope limits to prevent the robot from getting stuck.

Question 7

How to program the mowing schedule?

Accepted Answer

Use the control panel or the mobile app if available. You can set time slots and mowing days. Consult the manual for programming details.

Question 8

What to do if the robot hits an obstacle?

Accepted Answer

The robot is equipped with collision sensors. It reverses and changes direction. If the obstacle is stationary, check that the perimeter cable is properly positioned to avoid it.

Question 9

Is it safe for children and pets?

Accepted Answer

The robot has safety features: automatic stop when lifted, blades stop within seconds. However, it is not recommended to leave the appliance unattended in the presence of children or pets.

Question 10

How to store the robot in winter?

Accepted Answer

Clean it thoroughly, charge the battery to 100%, then store it in a dry, temperate place (around 20°C). Recharge the battery every 6 months to prevent deep discharge.

Question 11

How should the screws of the blades of the YARDFORCE MB 400 lawn mower be tightened?

Accepted Answer

The manual for the YARDFORCE MB 400 specifies that the blade screws must remain well tightened to ensure the safety of the device. However, the documentation does not provide a specific torque value in Newton-meters.
Practical tips for tightening:

Tighten the screws firmly but without forcing - the goal is to ensure a good hold without damaging the plastic casing of the robot
Check that the screws do not move during a slight shake
Regularly check (at least before each significant use) that the screws remain securely in place

Important to note: The manual expressly recommends replacing all worn or damaged blades AND screws simultaneously to maintain the robot's balance and avoid vibrations during mowing.

Question 12

Why does my YARDFORCE MB 400 robotic mower not mow the upper part of my lawn?

Accepted Answer

Your YARDFORCE MB 400 robotic mower cannot access the upper part of your lawn for several reasons. The robot has a maximum slope capacity of 35%: if the upper part exceeds this gradient, the robot simply cannot climb. Measure the slope of your lawn or observe if the robot backs up when trying to ascend this area. If the slope is well below 35%, the problem lies elsewhere.
The boundary wire is often the culprit. Ensure that the perimeter cable completely surrounds the mowing area, including the upper part. The wire must be positioned at at least 1 meter from any obstacle (trees, walls, posts, furniture) and must lie flat on the ground for the robot to properly detect the signals. Check that no section of the wire is damaged, raised, or improperly inserted. If the wire does not delineate the upper area, the robot will not recognize it as a mowing zone.
Obstacles and debris can block access. Regularly inspect the area where the robot operates and remove any stones, branches, cables, or debris that could prevent the robot from moving freely. Clear the access paths to the upper part of your lawn.
Also check the cutting height: if it is set too low and the grass at the top is very dense or tall, the robot may have difficulties or consider the area inaccessible. Adjust the cutting height between 20 and 60 mm to start with a less aggressive cut.
The battery autonomy (28V lithium-ion) can also be a factor. If your lawn is up to 400 m² and the upper part is far from the charging station, the robot may not have enough energy to cover it before returning to charge (60 to 90 minutes of charging). Position the charging station centrally and on flat ground to optimize access to all areas.
Finally, ensure that the robot is not damaged or worn. Inspect the blades, cutting system, and moving parts before each use. If any parts are missing, worn, or damaged, the robot may refuse to operate correctly or access certain areas.
If after these checks the upper part remains unmowed, manually test the robot by placing it directly in that area and starting it. If it refuses to operate even manually, the problem is mechanical and a repair is necessary.

Question 13

How to properly install the charging station of the YARDFORCE MB 400 robotic mower?

Accepted Answer

To properly install the charging station of your YARDFORCE MB 400 robotic mower, follow the steps below:

1. Choose the ideal location

Place the station on flat and clear ground.
Make sure there is enough space around for the robot to maneuver easily.

2. Respect the distance from obstacles

Position the station at least 1 meter away from walls, trees, or other obstacles.
This distance facilitates the robot's return to the station.

3. Orient the station correctly

Orient the front side of the station towards the mowing area.
This allows the robot to find its base more easily.

4. Secure the station to the ground

Use the screws or anchors provided to securely fix the station.
Avoid any movement of the station when the robot returns.

5. Connect the station

Connect the station to a suitable electrical outlet.
Ensure that the power cable is secured and does not pose a risk of tripping or accidents.

6. Check the operation

Check that the indicator lights on the station turn on, indicating that it is ready.
Start a mowing cycle to verify that the robot returns to the station to recharge.

By following these tips, you ensure an optimal installation of the charging station for your YARDFORCE MB 400 robotic mower, thus ensuring efficient and uninterrupted operation.

Question 14

How to properly install the boundary wire for the YARDFORCE MB 400 robotic mower?

Accepted Answer

To properly install the boundary wire for your YARDFORCE MB 400 robotic mower, follow these detailed steps:

1. Preparation of materials

Make sure you have the boundary wire provided with the robot.
  Gather the fixing stakes and a tool to dig a small trench if necessary.

2. Defining the mowing area

Clearly define the area to be mowed, avoiding obstacles such as trees, flower beds, or garden furniture.
  Plan a path for the robot to access the entire surface.

3. Laying the boundary wire

Start unrolling the wire from the charging station.
  Place the wire along the edges of the mowing area, following the desired shape.
  Ensure that the wire is taut, without loops or knots.

4. Securing the wire

Use the stakes to hold the wire in place.
  Drive the stakes in every 1 to 2 meters approximately to ensure the stability of the wire.
  If necessary, bury the wire slightly in a shallow trench to prevent movement.

5. Connecting to the charging station

Connect the ends of the wire to the charging station according to the product instructions.
  Ensure that the connections are well secured and protected from moisture.

6. Functionality test

Turn on the charging station and the robot.
  Check that the robot correctly follows the boundary wire without leaving the defined area.
  In case of problems, check the tension and continuity of the wire.

By following these steps, you ensure an effective and secure installation of the boundary wire for your YARDFORCE MB 400 robotic mower.

Question 15

Can the charging station of the YARDFORCE MB 400 robotic mower be installed on a flowerbed away from the lawn to be mowed?

Accepted Answer

No, it is not recommended to install the charging station of the YARDFORCE MB 400 on a flowerbed. Although technically possible, this location has several disadvantages that compromise the proper functioning of the automatic mowing and charging system. The station should be placed on flat, clear ground, preferably in the heart of the lawn area to be mowed.

The first issue concerns the robot's access to the charging station. The MB 400 must be able to locate and return automatically to the station to recharge once its battery is low. A flowerbed, which by definition is an elevated area or has plantings, creates obstacles that the robot cannot easily overcome. Its sensors and navigation system are optimized for moving on a lawn, not on uneven or damaged ground from the robot's repeated passage.

The second issue is the physical stability of the base. The charging station must be securely fixed on firm, flat ground. A flowerbed, often made up of loose soil, mulch, or planting substrate, does not provide the necessary stability. This instability may slightly shift the station during the robot's support while recharging, which can disrupt the alignment of the charging contacts and create electrical connection problems.

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Question 16

What should I do if my YARDFORCE MB 400 lawn mower robot displays a 'out of bounds' message while the wire seems to be in good condition?

Accepted Answer

The 'out of bounds' message from the YARDFORCE MB 400 lawn mower robot indicates that the robot detects it is outside the mowing area defined by the perimeter wire. Even if the wire appears to be in good visual condition, several factors can prevent its correct detection. Start by checking each of the following points to resolve the issue.
Checking the perimeter wire: Carefully inspect each segment of the wire along its entire length for cuts, tears, wear, or abrasions. Even a very small break (a few millimeters) or a flattened area can interrupt the electrical signal and make the robot think it is out of bounds. Gently pull on the wire to ensure there are no hidden nicks. Pay particular attention to areas where the wire passes under objects, near metal, or where it may have been stepped on.
Positioning and ground contact: The wire must be laid flat directly on the ground and maintained in continuous contact. Check that it is not twisted, folded, or partially lifted. Weather, animals, or soil compaction can move it. Ensure that the wire is securely fastened every 1 to 2 meters with the provided stakes. A wire that is too loose or suspended will not be detected correctly by the robot's sensors.
Checking electrical connections: Check the connections of the wire to the terminals of the charging station (starting and ending point of the circuit). Ensure that the connectors are fully inserted and that there is no visible corrosion (green or white traces). Corrosion of contacts or poor tightening of screws causes a loss of signal. Unplug and replug the connectors a few times to clean the contacts by friction.
Cleaning the robot's sensors: The perimeter and proximity sensors of the YARDFORCE MB 400 can accumulate dust, dried grass, or dirt that interferes with detection. Regularly clean the base of the robot, especially the sensors located under the chassis and at the front. A damp cloth (not wet) or a soft brush is sufficient. A dirty sensor may misinterpret the wire's signal and generate a false 'out of bounds' alert.
Checking the closed loop: The system works correctly only if the wire forms a complete closed loop. Starting from the charging station, the wire must surround the entire mowing area and return to the same point at the station. Visually check that the wire does not end in the middle of the lawn and that it never crosses another part of itself. An incomplete or crossed loop completely disrupts detection.
Restarting and resetting: After checking, turn off the robot completely for 2 minutes, then turn it back on to reset its sensors and detection system. Move the robot away from the charging station and place it in the center of the mowing area before restarting it. If the 'out of bounds' message persists after all these checks, contact YARDFORCE technical support: an electronic malfunction of the perimeter sensor may require expert diagnosis or part replacement.

Question 17

How to restart the YARDFORCE MB 400 robotic mower after a safety stop?

Accepted Answer

After a safety stop of your YARDFORCE MB 400 robotic mower, the restart procedure depends on the cause of the stop. The MB 400 has a safety system that automatically cuts off the motor when lifted, in case of obstacles, or abnormal vibrations. To restart your robot, you must first identify and correct the issue that triggered the stop.

Step One: Completely stop the robot

Press the STOP button (large red button) to immediately stop the robot
The blades will continue to spin for a few seconds after stopping, even after pressing STOP
Wait at least 5 seconds for the blades to come to a complete stop before any intervention
Set the main power switch to the OFF position, marked by the number 0

Step Two: Diagnose the cause of the stop

Visually inspect the robot and its surrounding area to identify obstacles (branches, stones, wires, debris) that may have blocked it
Remove any obstructions you find, especially in the cutting area and grass ejection
Check that the blades are not damaged or misaligned
Check the battery level: a low battery can trigger a safety stop
If the robot vibrated abnormally, inspect the bolts, screws, and cutting assembly for any damage
Ensure that the safety devices (front bumper, sensors) are not broken

Step Three: Restart the robot

Once the issues are corrected, set the main power switch to ON, marked by the number 1
The robot should emit a sound or light signal confirming activation
Wait a few seconds for the system to reset
Start a new mowing cycle normally

Prevention Tips

Regularly inspect the mowing area and remove obstacles before each use
Keep the blades clean and in good condition; clean the robot after each use
Ensure that the battery is sufficiently charged (at least 50%) before starting a cycle
Check that the power switch is functioning properly and is not damaged
Never use the robot on wet grass, as this increases the risk of blockage

If after these steps the robot still does not restart or stops again shortly after restarting, this may indicate a more serious problem requiring repair. Contact the technical service or an authorized YARDFORCE repair center for a complete diagnosis.

Question 18

How to reactivate the YARDFORCE MB 400 robotic mower after a winter storage period?

Accepted Answer

To reactivate your YARDFORCE MB 400 robotic mower after winter, start by fully charging the battery. According to the manual, the device should be stored with its battery fully charged at room temperature (around 20 °C). If the battery has been kept discharged, connect it to the provided charger and let it charge completely before any use. Important: during winter storage periods, each complete discharge reduces the battery's capacity. It is recommended to recharge the battery approximately every 6 months during prolonged periods of non-use.
Once the battery is charged, perform a complete visual inspection of the robotic mower. Inspect the entire device for any cracks, worn, or damaged parts due to storage. Carefully clean the robotic mower, especially the blades, wheels, and chassis to remove any debris, grass, or dirt accumulated during winter. Check that the blades are securely attached and in good cutting condition. Replace them if they show signs of wear or damage.
Before starting, also inspect the peripheral cable that defines your mowing area and ensure that no obstacles (stones, sticks, wires) obstruct this area. Unplug the charging station from the electrical outlet before setting the main power button to the OFF position if you are handling the robot. Then plug the charging station into an electrical outlet equipped with a residual current circuit breaker (30 mA maximum) in a dry and sheltered location.
Before each use, visually check the condition of all cables, the length, and the type of extension cords used to detect any damage or signs of aging. Also, check that the main power button works correctly and is not damaged. Ensure that all nuts, bolts, and screws remain tight to guarantee the safety of the device during operation.
Perform a startup test by first pressing the STOP button, then manually starting the robot to check that the wheels turn correctly, that the blades operate without abnormal noise, and that the robot can return correctly to its charging station. Never leave the tool operating automatically without supervision during this initial test. Once these checks are successfully completed, you can program your robot to resume its usual mowing cycle based on grass growth in spring.
Important tip: never place heavy objects on the robotic mower or its charging station when they are stored or in operation. If you need to move the robot from one place to another, first press the large STOP button to stop the tool, then ensure that the main power button is in the OFF position before lifting it by the handle located under the tool at the back, keeping the blade support away from your body.

Question 19

Where is the switch on the YARDFORCE MB 400 robotic mower and how do I use it?

Accepted Answer

The switch on the YARDFORCE MB 400 robotic mower is located on the top of the device, usually near the battery compartment. It can be identified by a power symbol, often represented by a circle with a vertical line.
To use the switch:

On: Toggle the switch to the "ON" position to turn on the robotic mower.
  Off: Toggle the switch to the "OFF" position to completely stop the device.

Always make sure to turn off the robot before handling or transporting it to ensure your safety.

Question 20

How to resolve the issue of the "mowing time" indicator flashing and the YARDFORCE MB 400 mower robot not starting after winter storage?

Accepted Answer

If the "mowing time" indicator is flashing on your YARDFORCE MB 400 mower robot after winter storage and the robot does not start, this generally indicates a problem related to the battery, configuration, or a temporary malfunction. Here are the steps to follow to resolve this issue:

1. Checking and recharging the battery

Place the robot on its charging station and let it charge for several hours, ideally overnight.
  Ensure that the charging contacts are clean and properly aligned.

2. Inspecting the connections

Check that the battery is correctly installed and that the connectors are not corroded or damaged.
  Gently clean the contacts if necessary.

3. Resetting the robot

Turn off the robot using the main switch.
  Wait about 5 minutes to allow the system to reset.
  Turn the robot back on and observe if the indicator stops flashing.

4. Cleaning the sensors

Check that the sensors located under the robot are not obstructed by dirt or debris.
  Clean them with a soft, dry cloth.

5. Checking the mowing settings

Check that the programmed settings, including the mowing duration, are correct and suitable for the season.
  Modify them if necessary to allow for normal starting.

If after these checks the problem persists, it may be a more technical malfunction requiring specialized assistance.

Question 21

How to resolve the error message 'device already in use' when pairing the YARDFORCE MB 400 robotic mower with the app?

Accepted Answer

The error message 'device already in use' indicates that your YARDFORCE MB 400 robotic mower is already associated with an account in the CloudHawk app. This can happen if the device was previously set up on another user account, another phone, or if you have changed accounts. Here’s how to resolve this issue step by step.
Check existing accounts: Start by checking if you have already set up the robot with another account or on another smartphone. If you have multiple YARDFORCE accounts, log in successively to identify the account to which the MB 400 is linked. You can also check with other household users who may have set up the device.
Factory reset procedure: To completely dissociate the robot from any previous account, perform a factory reset. First, place the robot on a flat and even surface. Turn it off completely by pressing the power button. Hold down the START button, then turn on the device via the main power button. Keep the START button pressed until all LEDs flash. Then release the START button and wait for the reset to complete. The robot will restart and return to its factory settings.
Reinstalling the app: Once the robot is reset, delete the CloudHawk app from your smartphone (go to Settings > Apps > CloudHawk > Uninstall). Then go to the Google Play Store (Android) or the App Store (iOS), search for the official 'CloudHawk' app from YARDFORCE, and reinstall it.
New pairing of the robot: Open the freshly installed CloudHawk app and create a new user account or log in with your credentials. Start the pairing procedure by following the app's instructions to establish the Bluetooth connection with the MB 400. The device should now be detected as a new device available for pairing.
If the problem persists: Contact YARDFORCE France technical support at 01 84 74 88 28 (Monday-Friday, 10am-12:30pm and 1:30pm-4pm) or by email at sumecfrance-sav@sumecfr.com. Technical support can check the status of the account associated with your robot and perform an account unlock if necessary.

Question 22

How to connect the YARDFORCE MB 400 robotic mower to Wi-Fi?

Accepted Answer

To connect your YARDFORCE MB 400 robotic mower to a Wi-Fi network, follow the steps below:

1. Preparation

Make sure the robot is charged and turned on.
Check that your Wi-Fi network is active and that you know the password.
Prepare a smartphone or tablet with an Internet connection.

2. Downloading the app

Download the official YARDFORCE app from the Google Play Store (Android) or the App Store (iOS).

3. Configuring the app

Open the app and create a user account or log in if you already have one.
In the app, select the option to add a new device or robot.

4. Switching the robot to Wi-Fi mode

On the robotic mower, press and hold the Wi-Fi button (or a specific button indicated) for a few seconds until the Wi-Fi indicator light flashes, indicating that the robot is ready to connect.

5. Connecting to the Wi-Fi network

In the app, follow the instructions to select your home Wi-Fi network.
Enter your Wi-Fi network password when prompted.
Wait while the robot connects to the network.

6. Confirmation

Once the connection is established, the app will display a confirmation message indicating that the robot is online.
You can now control and schedule your robotic mower remotely via the app.

If you encounter difficulties while connecting to Wi-Fi, check that your network is compatible (usually Wi-Fi 2.4 GHz) and that the signal is strong enough at the robot's location.

Question 23

How does the control panel of the YARDFORCE MB 400 lawn mower work?

Accepted Answer

The control panel of the YARDFORCE MB 400 is the main interface that allows you to control and configure your lawn mower robot. This device is equipped with a 28 V lithium-ion battery and has several essential control elements for optimal operation.

Main buttons:

Main power button (ON/OFF): Located on the top of the robot, it allows you to completely turn the device on or off. Make sure to set it to the OFF position before lifting or transporting the lawn mower robot.
STOP button: This emergency stop button allows you to immediately stop the mower in case of a dangerous situation. Use it consistently before moving the robot or intervening near the blades.
Programming buttons: These controls allow you to configure essential settings such as mowing schedules, cutting height, and operating modes according to your schedule and preferences.
Return to charging station button: You can use this button to manually send the robot to its charging station whenever you wish, regardless of the automatic programming.

Built-in features: The MB 400 benefits from intelligent navigation and a rain sensor that automatically interrupts mowing in bad weather. The device can handle slopes up to 35% and has automatic overload protection. It can manage lawns up to 400 m² with its three cutting blades.

Important: When the main power button is in the ON position, keep your hands and feet away from the rotating blades. The rain sensor automatically detects wet conditions and stops the robot for your safety and that of your lawn.

Refer to the programming section of your manual to access the settings menu and configure automatic mowing schedules according to your needs. For any specific questions, technical support is available under the terms of your 2-year warranty.

Question 24

Why does my YARDFORCE MB 400 lawn mower robot stop and turn in place?

Accepted Answer

If your YARDFORCE MB 400 lawn mower robot stops and turns in place, several causes may explain this behavior:

1. Obstacles or unsuitable terrain

The robot may encounter obstacles (branches, stones, objects) or terrain that is too rough or sloped, preventing it from moving normally. Check and clean the mowing area to facilitate its movement.

2. Dirty or obstructed sensors

The obstacle or position detection sensors may be dirty or blocked. Gently clean the sensors to ensure their proper functioning.

3. Low battery

An insufficiently charged battery can cause the robot to stop and attempt to reposition itself. Make sure the battery is fully charged before use.

4. Mechanical issues

Debris stuck in the wheels or under the blades can hinder movement. Inspect and carefully clean these components.

5. Incorrect settings or programming

A poorly configured mowing program can lead to abnormal behaviors. Check the settings and reset them if necessary.

By applying these checks, you can often resolve the issue. If the behavior persists, it may be helpful to contact a specialized technical service.

Question 25

What is the charging time required for the YARDFORCE MB 400 lawn mower robot?

Accepted Answer

The YARDFORCE MB 400 lawn mower robot typically requires between 60 and 90 minutes for a full charge of its battery. However, this time may vary depending on several factors:

Battery condition: An older or worn battery may require a longer charging time.
Usage conditions: Intensive use or specific weather conditions can influence the charging duration.

It is important to allow the robot to charge completely before each use to ensure optimal performance and maximum autonomy.

Question 26

How to reprogram the YARDFORCE MB 400 lawn mower robot?

Accepted Answer

To reprogram your YARDFORCE MB 400 lawn mower robot, follow these simple steps:
Access the control panel
Turn on your lawn mower robot and locate the control panel, usually found on the top of the device.
Enter programming mode
Press the Menu or Program button to access the programming settings.
Set mowing schedules

Select the days of the week when you want the mower to operate.
  Set the start and end times for mowing for each selected day.

Adjust cutting height
If your model allows, adjust the cutting height according to your preferences via the options available in the menu.
Save and exit
Confirm and save your settings by pressing the OK or Save button. Then, exit programming mode to return to the main screen.
Your lawn mower robot is now reprogrammed according to your new preferences.

Question 27

Where are the sensors located on the YARDFORCE MB 400 lawn mower robot?

Accepted Answer

The YARDFORCE MB 400 lawn mower robot is equipped with several essential sensors for its safe and efficient operation. Here is where they are generally located:

Collision sensors: Located at the front of the robot, these sensors detect obstacles to avoid collisions and protect both the robot and objects in the garden.
Lift sensors: Located underneath the robot, they detect if the device is lifted off the ground, which causes the blades to stop immediately for safety reasons.
Boundary sensors: Installed on the sides, these sensors allow the robot to detect the limits of the mowing area to avoid going outside the defined zone.

To ensure optimal operation, it is important to keep these sensors clean and free of debris. This allows the robot to operate correctly and safely in your garden.

Question 28

What does the flashing S1 indicator light on the YARDFORCE MB 400 lawn mower robot mean?

Accepted Answer

The flashing S1 indicator light on your YARDFORCE MB 400 lawn mower robot means that the device has detected an alert or a problem. This light warns you that action is required before you can use the robot normally.
The most common causes of the flashing S1 indicator light are:

Low or poorly connected battery: The lithium-ion battery of the MB 400 may be insufficiently charged or not properly installed in its compartment. Check that the battery connector is securely locked and recharge it fully.
Obstructed or dirty sensors: The navigation sensors and obstacle detectors of the robot may be blocked by dirt, cut grass, or debris. Gently clean all sensors (optical and infrared) with a dry cloth.
Programming or configuration error: An incorrect configuration setting or an incorrect mowing schedule programming can trigger this alert. Check that the time settings and zone parameters are correct.
Internal system malfunction: The robot may detect an internal electronic or mechanical issue that requires intervention.

Procedure to resolve the issue:

Turn off the robot and wait a few seconds, then turn it back on to see if the alert disappears.
Check that the 28 V battery is fully charged and properly connected to the robot.
Inspect and clean all sensors of the robot, especially those located at the front and under the chassis.
Check the programming settings in the configuration menu of the MB 400 and reset them if necessary.
Also clean the charging base to ensure a good electrical connection.

If the S1 indicator light continues to flash after these checks, the robot is likely detecting a more serious malfunction. We recommend contacting YARDFORCE customer service for a thorough diagnosis and professional repair.

Question 29

What does the blue and red flashing light on the YARDFORCE MB 400 robotic mower mean?

Accepted Answer

The simultaneous blue and red flashing light at the back of your YARDFORCE MB 400 robotic mower generally indicates an alert or a problem that requires special attention. Here are the main possible causes and steps to resolve this issue:

Possible causes of the blue and red flashing

Weak or defective battery: The robot may signal a low battery level or a charging problem.
Obstruction or issue with the sensors: Dirty or blocked sensors can lead to operational errors.
Blocked blades or obstacles: If the blades are hindered by debris, the robot may trigger an alert.
System error or need for reset: A temporary malfunction may require a restart.

Steps to resolve the issue

Check the battery: Ensure that the battery is fully charged and properly installed.
Clean the sensors: Inspect and clean the sensors to remove any dirt or obstruction.
Inspect the blades: Remove any debris or obstacles that may block the blades.
Restart the robot: Turn off the device, wait a few minutes, then turn it back on to reset the system.

If the flashing persists after these checks, it is recommended to contact customer service or a qualified technician for a thorough diagnosis.

Product type	Robot lawn mower
Brand	YARDFORCE
Model	MB 400
Rated voltage	20 V
Battery type	Lithium-ion
Estimated runtime	Approximately 60 minutes
Charging time	Approximately 120 minutes
Maximum mowing area	400 m²
Cutting width	Approximately 18 cm
Cutting height	20 to 60 mm (adjustable)
Maximum slope	25 %
Sound level	≤ 65 dB(A)
Net weight	Approximately 8 kg
Dimensions (L × W × H)	Approximately 55 × 40 × 25 cm
Power supply	20 V lithium-ion battery, mains charger
Main functions	Automatic mowing, return to base, collision and rain sensors
Maintenance and cleaning	Clean blades after use, check screws monthly
Safety	Automatic stop when lifted, blade lock, lightning protection
Spare parts and repairability	Replacement blades recommended by manufacturer, repair by authorized center
General information	Domestic use only, do not use on wet grass

MB 400 - Robotic mower YARDFORCE - Free user manual and instructions

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Frequently Asked Questions - MB 400 YARDFORCE

User questions about MB 400 YARDFORCE

1. Choose the ideal location

2. Respect the distance from obstacles

3. Orient the station correctly

4. Secure the station to the ground

5. Connect the station

6. Check the operation

1. Preparation of materials

2. Defining the mowing area

3. Laying the boundary wire

4. Securing the wire

5. Connecting to the charging station

6. Functionality test

1. Checking and recharging the battery

2. Inspecting the connections

3. Resetting the robot

4. Cleaning the sensors

5. Checking the mowing settings

1. Preparation

2. Downloading the app

3. Configuring the app

4. Switching the robot to Wi-Fi mode

5. Connecting to the Wi-Fi network

6. Confirmation

1. Obstacles or unsuitable terrain

2. Dirty or obstructed sensors

3. Low battery

4. Mechanical issues

5. Incorrect settings or programming

Access the control panel

Enter programming mode

Set mowing schedules

Adjust cutting height

Save and exit

Possible causes of the blue and red flashing

Steps to resolve the issue

USER MANUAL MB 400 YARDFORCE

INTENDED USE

SAFETY SYMBOLS

WARNING!

SYMBOL MEANINGS

Caution!

Warning Symbols on the switching power supply

Warning Symbols on battery pack

GENERAL SAFETY WARNINGS

WARNING!

IMPORTANT READ CAREFULLY BEFORE USE KEEP FOR FUTURE REFERENCE

PREPARATION

USE

WORK INTERRUPTIONS

CAUTION!

TAKING CARE OF YOUR MACHINE

ELECTRICAL SAFETY

CAUTION!

MAINTENANCE AND STORAGE

TRANSPORT

PRODUCT SAFETY WARNINGS

LIGHTNING PROTECTION

DECLARATION OF CONFORMITY

Conforms to the following directives and standards

INHALTSVERZEICHNIS

ALGEMENE VEILIGHEIDSWAARSCHUWINGEN

WAARSCHUWING!

VEILIGHEIDSWAARSCHUWINGEN VOOR HET PRODUCT

BESCHERMING TEGEN BLIKSEM

ZAWARTOĆ

KONSERWACJA I PZEECHOWYWAIE

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