Teendow D20S MAX+ Common Fault Problem
Initial Setup and Connection
Follow these steps for initial setup and connecting to the mobile app:
- Remove protective items from the robot.
- Install the side brush by clicking it into place.
- Place the charging base on a level, non-slip, hard surface against a wall. Connect the power cable and fully charge the robot before first use.
Note for Auto-empty Charging Base: Ensure no objects are within 1.5m in front and 0.5m on both sides of the charging base. Do not cover the signal transmitting area. To avoid recharging failure, do not place the charging base on a carpet or blanket. For smooth return to the base, start cleaning from the charging base. Do not move the charging base during cleaning.
Connect to Mobile Client:
- Download the "Teendow" app from your app store.
- Open the app, register or log in, and tap "+" on the home page to add a device.
- Follow on-screen instructions to connect the robot. (Note: Only 2.4GHz Wi-Fi band is supported.)
Troubleshooting Common Issues
When an error occurs, the robot's indicator light or the auto-empty charging base will light up red. Refer to the table below for solutions:
| Indicator Light | Voice Prompt | Solution |
|---|---|---|
| Robot - Flashing Red | Error 1: Front bumper stuck. | The front bumper is stuck. Tap repeatedly to remove dirt. Relocate to start. |
| Error 2: Side brush stuck. | The side brush may be entangled with dirt. Clean and retry. | |
| Error 3: Roller brush stuck. | The roller brush may be entangled with dirt. Clean the roller brush and retry. | |
| Error 4: Wheel stuck. | The wheel may be entangled with dirt. Clean the wheel and retry. | |
| Error 6: Filter blocked or wet. | Clean and dry the filter. If not dry, dry for 24 hours. Replace if necessary. | |
| Error 7: Wheel suspended. | Move the robot to its original position and retry. | |
| Error 8: Cliff sensor dirty. | Wipe the cliff sensor with a dry cloth and move the robot to a nearby place to start. | |
| Error 10: Device tilted. | Place the robot on a level surface and retry. | |
| Error 11: Low Battery. | Place the robot on the charging base to recharge. | |
| Error 12: Robot trapped. | Clear obstacles around the robot. | |
| Robot - Flashing Red | Error 13: Charging base blocked. | Clean the area around the charging base and its beacon area. |
| Robot - Flashing Red | Error 14: Charging error. | Wipe the charging contacts of the robot and the charging base. |
| Robot - Flashing Red | Error 15: Please insert the dust box and filter. | Insert the dust box and filter. If the error persists, try replacing the filter. |
| Robot - Flashing Red | Error 16: Relocalized failed, stop cleaning. | Place the robot back on the charging base and restart. |
| Robot - Flashing Red | Error 17: Relocalized failed, stop recharging. | Manually place the robot on the charging base for charging. |
| Robot - Flashing Red | Error 18: The specified area cannot. | Move the robot to a new location or remove restricted area settings. |
| Robot - Flashing Red | Error 19: Laser distance sensor stuck. | Clean the laser distance sensor and retry. |
| Robot - Flashing Red | Error 20: Laser distance sensor blocked. | Clean the area around the sensor and wipe with a dry cloth. |
| Robot - Flashing Red | Error 21: No-go zone detected. | Move the robot outside the no-go zone and restart. |
| Robot - Flashing Red | Error F1: Side brush module fault. | Check for entanglement, clean and reinstall the side brush. Restart the system. Contact customer service if the fault persists. |
| Robot - Flashing Red | Error F2: Roller brush module fault. | Check for entanglement, clean and reinstall the roller brush. Restart the system. Contact customer service if the fault persists. |
| Robot - Flashing Red | Error F3: Vacuum fan module fault. | Check the dust box, filter, and suction port for blockages. Restart the system. Contact customer service if the fault persists. |
| Robot - Flashing Red | Error F4: Wheel module fault. | Check for wheel entanglement. Restart the system. Contact customer service if the fault persists. |
| Robot - Flashing Red | Error F6: Battery module fault. | Wait for the battery temperature to normalize before use. Contact customer service if the fault persists. |
| Robot - Flashing Red | Error F7: Laser distance sensor fault. | Clean the laser distance sensor and retry. Restart the system. Contact customer service if the fault persists. |
| Robot - Flashing Red | Error F8: Water pump malfunction. | Clean water tank, pump interfaces, and robot base drain. Check mopping module. Restart the system. Contact sales service if the fault persists. |
| Charging base - Solid Red | Please check whether the dust bag is installed and close the cover properly. | Ensure the dust bag is installed correctly and the cover is closed. |
| Long time using dust bag, please replace the dust bag. | Check the dust bag status and replace it if necessary. Reinstall if it's a new bag. | |
| Air duct blocked. Please clean it. | Check and clean the auto-empty dirt port of the robot and charging base. Refer to "Clean the air duct" if needed. | |
| If the fault cannot be eliminated, please contact customer service. | ||
Additional Troubleshooting Scenarios
| Problem Type | Solution |
|---|---|
| Unable to turn on. | 1) Ensure the charging base is connected to power and the robot is properly aligned. 2) Restart the system. If still not starting, press and hold the power button for 10 seconds to force shutdown, then press for 3 seconds to start. |
| Unable to charge. | 1) Check the charging base indicator light and power connections. 2) Ensure the robot is aligned with charging contacts. Check the robot's indicator light. 3) If not charging, turn off the robot, unplug the base, wipe charging contacts on both robot and base, then retry. Contact customer service if the problem persists. |
| Unable to start. | 1) Ensure the robot is connected to power. 2) Ensure the robot is fully charged. 3) Press and hold the power button for 3 seconds to turn on. |
| Unable to recharge. | 1) Clear obstacles near the charging base and ensure it's in an open area (1.5m front, 0.5m sides clear). 2) Wipe sensors (infrared obstacle avoidance, recharge sensor, beacon, charging contacts) with a dry cloth. 3) Place the robot near the charging base. |
| Stop working suddenly. | 1) Check for foreign matter trapping the robot. 2) Check battery power. 3) Check for red light or fault indication and refer to "Troubleshooting". 4) Restart the system: long press power for 10 seconds to force shutdown, then press for 3 seconds to start. |
| Abnormal behavior. | 1) Refer to "Troubleshooting" for fault prompts. 2) Wipe sensors with a dry cloth. Refer to "Routine Maintenance". 3) Reboot the robot. |
| The robot suddenly made a loud noise. | 1) Adjust suction or turn off auto-boost. 2) Check for blockages in the roller brush, filter, dust box, suction port, wheels, and caster wheel. 3) Ensure the filter, roller brush, and cover are installed correctly. |
| Decreased cleaning performance or dust falling. | 1) Clean the dust box. 2) Clean or replace the filter. 3) Clean the roller brush. Refer to "Routine Maintenance" for details. |
| The roller brush does not rotate. | 1) Clean the roller brush and its ends, check for hairs and foreign matters. 2) Check if the roller brush and cover are installed correctly. |
| The water in mopping combo module does not flow out or flow less. | 1) Check water in the tank and correct installation of the mopping module. 2) Adjust water flow to a high level via the app. 3) Check for blockages in the water outlet and air return hole. |
| Unable to connect Wi-Fi. | 1) Ensure good Wi-Fi coverage. 2) Download the latest mobile client and reset Wi-Fi to reconnect. 3) Check password entry and special characters. 4) Ensure connection to a 2.4GHz band network (5G is not supported). |
| Scheduled cleaning is not performed. | 1) Ensure battery level is ≥ 15% for cleaning to start. 2) Verify the scheduled cleaning cycle is set correctly. 3) Check if scheduled cleaning was successful. Try rescheduling via the mobile app. |
| If the fault cannot be eliminated, please contact customer service. | |
Contact Information
For further assistance, please contact Teendow customer service.
Email: CS@teendow.com
