Support

If you experience any issues with your eFoil, please follow the troubleshooting steps below carefully. Failure to follow these instructions may cause further equipment damage or personal injury. If your issue persists or is not listed here, please contact Action Yachts customer service for after-sales support.

1. Board Stops Running

• Immediate Action: Release the throttle on the remote control and turn it off. Lie on the board and paddle back to shore with both hands.
• Remote Control Check: Turn on the remote and observe the Bluetooth icon. If it is flashing, restart the battery and re-pair the remote via Bluetooth.
• Battery Check: Ensure the battery is firmly installed. If loose, tighten all mounting screws and locks. Remove the battery and inspect the metal connectors for corrosion (especially from seawater). If corroded, rinse with fresh water, apply rust remover, and dry thoroughly.

2. Battery Failure

• Red Light Indicator Warnings:
  • 2 Flashes: Over-current fault
  • 3 Flashes: Over-temperature fault (let the battery cool before reuse)
  • 4 Flashes: Bluetooth error
• Charging Issues:
  • Red LED flashing rapidly: Input power failure
  • 2 Rapid Flashes: Charger overheating
  • 3 Rapid Flashes: Output overcurrent
  • 4 Rapid Flashes: Output overvoltage
• Resolution:
  • Check both the AC input and DC battery connections for proper fit. Reconnect or tighten as needed.

3. Abnormal Motor Noise

• Immediate Action: Stop using the board. Release the throttle and power off the remote. Paddle back to shore.
• Check for Debris: Remove the battery. Inspect the propeller area for foreign objects. If debris is found, remove the propeller guard and clean both the guard and propeller thoroughly before reassembly.

4. Excessive Board Vibration

• Immediate Action: Stop using the board. Power off and return to shore.
• Check Structural Components: Inspect the mounting positions of the battery, mast, and hydrofoil. If any are loose, immediately tighten all screws and locking mechanisms.

If none of the above steps resolve the issue, please contact Action Yachts d.o.o. for authorized service assistance.

Instructions Before Use 

Before using the product, check that waterproof components (e.g., connectors, batteries, mast head) are not damaged and that the battery is charged. Ensure that the power system is correctly connected, the battery is securely mounted, and all screws are tightened. Also, confirm that the propeller and protective shield are intact, and that any sand or debris has been cleaned. Ensure all product modules are undamaged and fully functional.

Users must familiarize themselves with local regulations and rules of the area where the electric hydrofoil is used: 

• Ensure the area islegally approved for eFoil use.
• Minimum water depth must be5 meters.
• Area must befree of obstacles above and below the surface.
• There must beno swimmers or divers nearby.
• Avoid areas with other water sports activities.

Usage Steps

1. Transport: Move the board to a location with appropriate water depth. Keep theremote control switched offduring transport.
2. Power On: Press both left and right buttons on the remote simultaneously. After 2 seconds, the battery level will appear.
3. Mounting the Board: Grab the handles, mount the board from the rear, lie down flat and balance your body.
4. Unlock and Start: Press and hold the right button to unlock, then slowly pull the trigger. The board begins to move. If the front rises, shift your weight forward until the board is level.
5. Low-Speed Practice: Stay prone, uselow-speed gears (1–8), and steer by shifting body weight.
6. Kneeling and Standing: Gradually increase speed, kneel, then quickly stand. Keep knees slightly bent and maintain balance by adjusting foot position.
7. Flying on Water: Increase gear until lift is generated. Slightly tilt the nose up, then adjust body position to maintain horizontal flight. Control flight height and direction through body weight shifts.

Riding Notes

• Always wear alife jacket and helmet.
• If falling, try to landaway from the board, preferably behind or to the side.
• Immediatelyrelease the trigger to stop propulsion.
• Keep theboard nose above water to ensure signal connectivity.
• Never pull the trigger aggressively.
• Do not touch the trigger when returning to the board.
• Control speed using gear shift (keep trigger fully pressed).
• Avoid sharp turns at high speed.
• If takeoff is too fast, shift your feet forward.
• Flying is advanced and should be attempted only after mastering balance at low speeds.

Power System Warnings

• Do not remove the propeller guard.
• Never touch the propeller in water.
• Ensure the power system is clean and undamaged before use.
• Keep body, fingers, and toes away from the propeller while powered.
• Avoid contact with mast or foil during operation.
• Alwaysdisconnect power before servicing the propeller.

Battery Warnings

• Do not disassemble or modify the battery.
• Avoid impacts, drops, deformation, or puncture.
• Do not insert/remove the battery in water.
• Keep battery away from sunlight, fire, or heat.
• Do not mix battery types.
• Do not use modified or damaged batteries/chargers.
• Do not leave the battery charging over 24 hours.
• Do not leave the battery unattended while charging.
• Do not transport the board with the battery inserted.
• Keep batteries away from children and animals.
• For storage, maintain charge between40–60%.
• Check battery condition before every use.
• Ensure no water or debris at battery-mast interface.
• Rinse battery with clean water after use.
• Only useoriginal chargers.
• Followlocal regulations for battery use and disposal.

After Use

• Shut down by pressing both remote buttons for 2 seconds. The five indicator LEDs will flash then turn off.
• Remove board from water, unlock and take out the battery.
• Remove hydrofoil and mast with a tool.
• Rinse all parts with fresh water.

If a problem occurs, stop immediately and paddle back to shore. Only resume after inspection and resolution. If the issue persists, contact Action Yachts d.o.o. support.

After using the product, always make sure it is turned off, and confirm that both the remote control and the battery are powered off.

Regularly inspect the status of each module and ensure there is no damage to waterproof components, such as the remote control, battery, or mast head.

Power System Cleaning: Rinse each part individually with clean fresh water, including the mast, mast base, mast DC port, motor, propeller, and protective guard. Ensure there is no residue of seawater, sand, or debris. Use an alcohol swab to clean the DC port, ensuring it remains dry and free from impurities.

Board Cleaning: Rinse the board body, battery compartment, mast mount area, and other parts with clean fresh water to eliminate any remaining seawater, sand, or debris. After rinsing, let the board dry in a clean, dry environment or use a dry towel to wipe off any remaining moisture.

Battery Cleaning: Rinse the exterior of the battery with fresh water. Clean the battery’s DC port with a cotton swab lightly moistened with alcohol. Wipe the battery with a dry towel and allow it to fully dry in a ventilated area.

Remote Control Cleaning: Rinse the exterior and trigger area of the remote with clean water. If the trigger becomes stuck, inspect for small stones or debris. Remove them and rinse the trigger area again thoroughly.

After cleaning, ensure all components are completely dry before returning them to their packaging.

Always store the product in a place that is not exposed to direct sunlight. UV rays and high temperatures can cause permanent damage to the product.

Instructions before use

Before using this product, please make sure that the waterproof parts (such as connectors, batteries, mast heads) are not damaged, and that the battery has sufficient power; please make sure that the power system is firmly connected, the battery is installed firmly, and that all connection screws are tightened; please make sure The propeller and protective cover are not damaged or cracked, and sand or other residues must be carefully removed; please confirm that all module units of the product are not damaged and can work normally before use. Users should read the instructions for the location where the electric hydrofoil surfboard is used before use.

• Make sure the area is legal for the use of electric hydrofoils.
• Make sure the water in the area is deep enough and the water depth in the use area is at least 5 meters.
• Make sure the area is clear of obstructions both above and below the water.
• Make sure the area is clear of swimmers and divers.
• Choose to stay away from waters where other water sports are taking place.

Steps for usage

After the electric hydrofoil surfboard is assembled, users should follow the following steps to use HW eFoil-1:

• Transporting the board: Transport the surfboard to an area with suitable water depth. During the transport process, please ensure that the remote control remains turned off.
• Power on: Press and hold the left and right buttons of the remote control at the same time. After 2 seconds, power on. The five battery indicator lights will light up one by one (light up one by one from left to right) with an interval of 5 seconds. After lighting for 2 seconds, the current battery level will be displayed.
• Get on the board: Grasp the handles on both sides of the board with both hands, jump up from the tail of the board and climb onto the board, maintain a prone position, and adjust your body posture to maintain balance. When getting on the board, be careful not to hit the hydrofoils and propellers with your legs.
• Unlock start: Press and hold the right button of the remote control to unlock the remote control. Slowly pull the trigger of the remote control and the surfboard starts to move. When the front of the board tilts up, slowly crawl toward the front of the board until the board is parallel to the water surface.
• Low-speed practice: Keep the board parallel to the water surface, lie prone on the board and practice at low speed, keeping the gear in the low-speed range (beginners are recommended to start getting familiar with it from 1st gear, and the highest gear should not exceed 8th gear). Turning is achieved by controlling the center of gravity of the body. If the center of gravity is to the left, the surfboard will turn left; if the center of gravity is to the right, the surfboard will turn right. Only when you are proficient enough can you proceed to the next stage.
• Standing and slipping: The gear gradually increases, adjusts the body's posture into a kneeling position, and after skilled and turns. Keep your body balance and keep the current gear, support one of the feet forward and quickly stand up. After standing, the legs are slightly curved, and your knees are slightly bent. In front of you, you can adjust the standing position of the foot appropriately to keep your body balance. When the front of the plate is upturned, the front foot is stood forward or the front foot is properly standing forward. The left and right turns are appropriately tilted by the body's center of gravity, and the body returns to the middle state after the turn. Only when you are proficient enough can you proceed to the next stage.
• Flying over water: Continue to adjust the gear to a higher level. Once sufficient speed is reached, the lift of the hydrofoils can lift the board out of the water. The rider needs to tilt the front of the board up a few degrees to achieve takeoff, but the tilt then requires quickly controlling the body's center of gravity to keep the board parallel to the water to maintain a constant height. For example, when the flight speed reaches about 20km/h, the front of the board appears to be tilted up. At this time, the center of gravity should be adjusted forward so that the board is always parallel to the water surface. During flight, you can control the flying height by adjusting the center of gravity. You can turn left and right by appropriately tilting the center of gravity of the body. After the turn, the body returns to the neutral state.

Cycling notes:

• Please be sure to wear a life jacket and helmet throughout the journey.
• When you lose your balance and are about to fall into the water, use the last bit of balance in your body to fall as far away from the board as possible. Please be sure to fall behind or to the side of the board to avoid being hit by the board, and release your hand from the throttle trigger immediately to avoid the possibility of the surfboard continuing to run.
• During the sliding process, the front end of the board should be exposed as much as possible out of the water to maintain a good wireless signal connection.
• Please do not pull the throttle trigger too hard.
• Please make sure that your hands do not touch the throttle trigger when swimming back to the board after falling into the water.
• When surfing, it is recommended to control the speed by switching gears (always hold the throttle trigger to the bottom).
• Make sure not to go too fast when turning.
• If you take off too fast or too hard, you can move your feet slightly forward.
• Flying on the water is faster and more difficult. It is recommended that beginners get familiar with it at a low speed for a certain period of time, and then try this action after they can master the balance well.

Power system warning

• Do not remove the propeller guard.
• Do not attempt to secure or touch the propeller in the water.
• Before use, please make sure that the power system is not damaged and that the propeller and protective cover are free of any sand or other foreign matter.
• Always keep your body, fingers, and toes away from the propeller when the system is powered on or used in water.
• When using it in the water, please ensure that your body does not come into contact with the mast or foil.
• Please make sure to disconnect the power take-off before servicing the propeller.

Battery warning

• Do not disassemble or modify the battery for other purposes.
• Do not puncture, impact, shock, drop or deform the battery.
• Do not install or remove batteries in water.
• Do not expose the battery to direct sunlight, fire, or high temperatures.
• Do not mix batteries with other different types of batteries.
• Do not use modified or damaged batteries or chargers.
• Do not leave the battery in the charger for more than 24 hours.
• Do not connect the battery to the wrong terminals in the charger or equipment.
• Do not leave the battery unattended while it is charging.
• Do not install the battery on the board body for transportation.
• Do not place heavy objects on top of the battery or charger.
• Do not throw away batteries carelessly.
• Please make sure the battery is kept out of reach of children and pets.
• Please make sure the battery is placed in a cool, dry and well-ventilated area.
• For long-term storage, please ensure that the battery power is maintained at 40-60%.
• Please make sure to carefully check the battery condition before each use.
• Please ensure that there is no water, sand or other foreign matter in the interface between the battery and the mast.
• Please rinse the battery with clean fresh water after use.
• Please be sure to use the original charger to charge the battery.
• Always use, store, transport and dispose of batteries in strict compliance with local laws and regulations.

After use instructions

• After use, press and hold the left and right buttons of the remote control simultaneously for 2 seconds to shut down. All five lights of the battery indicator light will be on for 2 seconds, and then the five lights will turn off one by one (from high to low), with an interval of 5 seconds, and a beep will sound to confirm that the surfboard has been turned off.
• Take the surfboard out of the water. Unscrew the four rotating locks and take out the battery.
• Use a wrench to unscrew the front and rear wings and take out the hydrofoils.
• Use a wrench to unscrew the screws holding the mast and take out the mast.
• Rinse sand and dust from the board and other parts with clean fresh water.

If any problem occurs during use, please stop operation immediately, lie on the board and paddle with both hands back to the shore for inspection. Only after the problem is solved can it be used in the water again. If there is a problem that cannot be solved, please contact Hobbywing after-sales service in time.

At Action Yachts, we want you to be fully satisfied with your purchase. If you're not, we’re here to help.

30-Day Return Policy

You have 30 days from the date of receipt to request a return.
To be eligible for a return:

• The item must be in its original condition, unused, and unworn
• It must be in the original packaging with all accessories and labels intact
• Proof of purchase (invoice or receipt) is required 

To initiate a return, please email us at: info@actionyachts.eu

Please note: Returns must first be approved. Items sent back without prior authorization will not be accepted.

Once your return is approved, we will send you:

• A return shipping label
• Instructions on how and where to send the item

Return Address

(Return address will be provided upon approval. Do not send any item before receiving confirmation.)

Damaged or Incorrect Items

Please inspect your order upon delivery. If your item arrives damaged, defective, or incorrect, contact us immediately so we can resolve the issue.

Non-Returnable Items

Certain types of products cannot be returned, including:

• Custom-made or personalized items
• Opened or used electronic products, such as batteries and power systems
• Products showing signs of water damage, wear, or modification
• Items sold as final sale or discounted stock

Due to hygiene and safety regulations, we cannot accept returns of items with broken protective seals or used in water.

Please contact us before returning any item if you are unsure about eligibility.

Exchanges

If you'd like to exchange a product, we recommend:

1. Initiating a return of the original item
2. Placing a new order for the desired product 

EU 14-Day Cooling-Off Period

If your order was shipped within the European Union, you have the right to cancel your purchase within 14 days, for any reason, without justification.

Items must still meet the return conditions stated above.

Refunds

Once we receive and inspect your returned item, we will notify you of the approval status.

If approved:

• The refund will be processed to your original payment method within 10 business days
• Please note that processing times may vary depending on your bank or card issuer

If more than 15 business days have passed since your return was approved and you have not received your refund, contact us at: info@actionyachts.eu

HW eFoil App Installation and Registration

To access full features and updates for your HW eFoil, please install the official Hobbywing eFoil mobile app. Follow the steps below for both Android and iOS platforms.

1. App Download

For Android Users:

• Open the Google Play Store.
• Search for:HW eFoil
• Tap “Install” and wait for the download to complete.

For iOS Users:

• Open the Apple App Store.
• Search for:HW eFoil
• Tap “Get” and confirm the download with Face ID, Touch ID, or Apple ID password.

2. Account Registration

• Open theHW eFoil App after installation.
• Tap“Register” to create a new account.
• Enter your email address and create a secure password.
• You will receive a verification code by email – enter it in the app to confirm registration.

3. Device Connection

• Turn on the remote control and the board battery.
• Enable Bluetooth on your phone.
• In the app, go to“Connect Device”.
• Select your board from the available device list.
• Wait for successful pairing confirmation.

4. App Features

• Monitor real-time battery status
• Access firmware updates
• Adjust riding settings (speed limits, profiles, etc.)
• Log and track ride data
• Access service and support options

Note: Ensure your mobile device has an active internet connection during installation and firmware update processes.

For additional technical support, contact Action Yachts support team.

Disclaimer

Action Yachts provides this product in cooperation with Hobbywing Technology. Action Yachts will be responsible for after-sales service (repair or replacement) under the condition that the product has been used strictly in accordance with the user manual.

Action Yachts and Hobbywing Technology are not liable for any damage, injury, or legal consequences resulting from improper or unauthorized use of this product. By using this product, you acknowledge and agree to all terms and safety warnings described in the user manual. Product design and instructions are subject to change without notice due to ongoing product improvements.

WARNING

The HW eFoil S1 is a powerful water sports device. Using this product carries inherent risks. Misuse may lead to damage, injury, or even death. Before use, read the user manual thoroughly, and ensure you fully understand the device's features, risks, and operating procedures.

Use only original components provided or approved by Action Yachts and Hobbywing Technology. Non-compliant use voids warranty and may be dangerous. We strongly recommend purchasing personal accident insurance and third-party liability coverage.

Safety Summary

Using this product entails risks, including serious injury or death. By using the eFoil, you accept these risks. To minimize risk:

• Read and understand the manual in full before your first ride.
• Do not allow inexperienced users to operate the device without full instruction.

Usage Warnings

• Useonly on water.
• Always wear alife jacket and protective helmet.
• Minimum water depth:5 meters.
• Avoid using nearrocks, vegetation, wildlife, or swimmers.
• Never use in areas withswimmers, divers, or underwater obstructions.
• Do not transport oncar roofs—this can severely damage the device.
• Do not use inadverse weather conditions (e.g. high wind, storms).
• Never operate under the influence of alcohol or drugs.
• Check the product and all parts fordamage or defects before each use.
• Do not use the product if it containsforeign matter (e.g. sand, water in sensitive components).
• Do not exceed themaximum rider weight of 120 kg.
• Ride atsafe speeds that allow controlled stopping.
• Always maintain a safedistance from shore.
• Useonly genuine Hobbywing accessories.
• Do not performextreme maneuvers such as high-speed turns, jumps, or stunts.
• Strictly adhere tolocal laws and waterway regulations. Use in prohibited areas is forbidden.

Failure to follow these safety instructions may result in voiding the warranty and increased risk of injury or equipment damage.

For full operational guidance, refer to:

• Product Manual
• Warning Before Use
• Safety Precautions
• Fault Identification and Solutions
• Maintenance Instructions

If in doubt, contact Action Yachts d.o.o. for support or clarification before use.