The message “something is wrapped on the main” on the Xiaomi Mi Robot screen (or in the Mi Home app) is one of the most common mistakes that robot vacuum cleaners face, meaning that the main brush or side brush has got hair, threads, wool or other debris that blocks rotation.
In most cases, you can fix the error yourself in 5-10 minutes, but it is important to act carefully so as not to damage the mechanism. In this article, we will analyze all possible causes of the message, step-by-step solution for different models (Mi Robot Vacuum-Mop 2 Pro, S5 Max, STYJ02YM, etc.), and also give tips on how to prevent the recurrence of the problem.
If your Xiaomi robot vacuum cleaner suddenly stops and makes a winding error, don't panic. 90 percent of the time, it's the hair or thread that wraps around the brush shaft, but sometimes the problem goes deeper: worn-out bearings, damaged gears, or a firmware failure, and we'll help you figure out what happened, and we'll tell you when to go to the service center.
Before starting disassembly, make sure the robot is powered off (remove the battery or unplug the charging cord) and this will prevent accidental switching on during cleaning and protect against short circuit.
Why does the “go to the bottom” error occur?
The message of winding garbage onto the main brush is a defense mechanism that works when you block rotation. The Xiaomi robot vacuum cleaner is equipped with current sensors that detect an increased load on the brush engine. If the shaft is rotating with difficulty or even jammed, the system stops work and outputs an error.
Main reasons:
- 🧶 Hair, animal hair, or thread wound onto the shaft of the main brush, most often in homes with carpets or with furry pets.
- 🧵 Small garbage (scraps of paper, plastic bags, hair gums), getting into the mechanism of the brush.
- ⚙️ Wearing of bearings or gears in the brush drive, and over time, the parts wear off, and the shaft starts to peck.
- 🔧 Damage to the brush itself: cracks on the roller, deformation of bristles or moisture (relevant for models with the function of washing floors).
- 🤖 Firmware or sensors fail. Rarely, but it happens that the error appears without a real lock (false positive).
In models with dual main brushes (for example, Xiaomi Mi Robot Vacuum-Mop 2 Pro), the problem can occur on both brushes at the same time, and sometimes the Mi Home application does not specify which brush is locked, you will have to check both.
Critical information: If the Xiaomi robot vacuum cleaner still gives an error after cleaning the brush and does not turn on, this may indicate damage to the engine or control board, in which case a diagnosis is required at the service center.
How to remove the winding on the main brush: step-by-step instructions
To begin with, prepare the tools:
- ✂️ Scissors (preferably manicure - with thin blades).
- 🔧 Screwdriver (usually cross, but in some models - hexagonal).
- 🧴 Alcohol wipes or cotton swabs for cleaning.
- 🔦 Flashlight (to better see garbage in hard-to-reach places).
Now let's start cleaning and cleaning:
- Turn off the power. Remove the battery or unplug the charging cord. It's a must!
- Turn over the robot vacuum cleaner and remove the main brush. In most Xiaomi models, it is mounted on the latches: press the latches on the sides and pull the brush over yourself.
- Look at the shaft of the brushes. This is where the hair is most often wound. Carefully remove it with scissors or tweezers. Don't pull the hair with your hands, you can damage the bristles.
- Check the side brushes. They can also be blocked by debris. Take them off by pulling them down (some models need to turn counterclockwise).
- Clear the compartments. Dust and dirt accumulate not only on the brushes, but also inside the body. Use a flashlight to inspect the drive mechanism.
- Put the robot vacuum cleaner back together, make sure the brushes are in place before you click.
☑️ What to check after cleaning
If you make a repeat error after assembly, there might be a problem with the drive mechanism, and then you're going to have to take apart the body of the robot vacuum cleaner and check the gears, and that's what we're going to talk about in the next section.
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To make your hair less wound, regularly (every 1-2 weeks) lubricate the brush shaft with silicone lubrication, which will reduce friction and make it easier to clean.
Disassembly of the body: if the problem is in the mechanism of the brush
If a simple brushing didn't work, it's likely that the debris or the hair got deeper into the drive gear or the gears, and to get to them, you'll have to partially disassemble the robot vacuum cleaner. Attention: this will void the warranty if it's still valid!
Instructions for Xiaomi Mi Robot Vacuum models (including S5/S6/STYJ02YM):
- Remove the dust collector and the filters. They're usually mounted on the latches.
- Unscrew the screws on the bottom cover. Most models have 4-6 screwdrivers. Be careful, some screws may be hidden under stickers.
- Carefully tuck the lid. Use a plastic shoulder blade or mediator to avoid scratching the body. The lid may sit tight because of the sealing gum.
- Look for debris around the gears or on the shaft of the engine, remove it with tweezers or compressed air.
- Check the bearings. If they're squeaky or creaky when they're spinning, they need to be replaced.
⚠️ Warning: Do not touch the control board without an antistatic bracelet.Static electricity can damage electronic components.
Once cleaned, assemble a robot vacuum cleaner and turn it on. If the error is gone, the problem was mechanical locking. If it's not, maybe the current sensor or the brush engine is faulty, and then you should go to the service.
What to do if the screws do not unscrew?
The Mistake Remains: Possible Causes and Solutions
If after all the manipulations, the robot vacuum cleaner Xiaomi still writes that “something is wound up on the main”, consider the following options:
| Reason. | Signs. | Decision |
|---|---|---|
| The current sensor is damaged. | The error appears immediately after turning on, the brush rotates freely. | Replace the sensor or control board. You need soldering equipment. |
| Wear of the brush | The bristles were worn, the roller cracked or deformed. | Replace the brush with a new one (the article depends on the model). |
| Firmware failure | The error appears chaotic, other functions are unstable. | Reset the settings to the factory or reflash the robot through Mi Home. |
| Engine problems | The brush does not rotate at all, a hum or a crackle is heard. | Engine replacement. It's hard at home, it's better to give it to the service. |
To diagnose the engine brush can be used multimeter:
- Disconnect the engine power connector.
- Call the windings on the cliff (resistance should be within 10–50 Ohms).
- If there is no resistance or is aiming for infinity, the engine is burned.
How to prevent waste from getting out: prevention
To make the error “wound on the main” appears as rarely as possible, follow these tips:
- 🧹 Clean your brushes regularly, remove your hair and debris after every 3-4 cleanings, and more often in homes with animals.
- ✂️ Shorten threads and laces. Long brushes of carpets, fringes on blankets or shoe laces are often wound onto the brush.
- 🚫 Remove dangerous objects from the floor. Hair bands, socks, wires, all of these can block the brush.
- 🔄 Use less power cleaning modes. At maximum speed, the brush bites harder into the carpets, clinging to the hair.
- 🛒 Buy a spare brush. Xiaomi's original brushes last 6-12 months. It's cheaper to replace than to repair the engine.
For models with the function of wet cleaning (Mi Robot Vacuum-Mop) additionally:
- 💧 Do not use too much water – moisture can get into the brush mechanism.
- 🧼 Wash the brush after each wet cleaning and dry thoroughly.
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The most common cause of brush failure is hair more than 10 cm long. They are wound on the shaft and over time deform it, which leads to uneven rotation and increased load on the engine.
Frequent questions about Xiaomi robot vacuum cleaners
Let’s look at the typical situations faced by owners:
Can you use a robot vacuum cleaner without a main brush?
How often should I change my brush?
Why does the error only appear on the carpet?
Can you lubricate the shaft of the brush?
What if the robot doesn’t turn on after an error?
When do I contact the service center?
Not all problems can be solved by yourself.
- 🔧 After cleaning, the brush does not rotate at all, and the engine hums.
- ⚡ On the body or brush, melted areas are visible.
- 💻 The error appears even after replacing the brush and resetting the settings.
- 🔋 Robot vacuum cleaner does not hold charge or shut down after a few minutes of operation.
The cost of repairs in official service centers Xiaomi:
- Replacement of brushes - from 500 to 1500 ₽ (model-wise).
- Replacement of the brush engine - from 2000 to 4000 ₽.
- Diagnosis is usually free if you agree to a repair.
⚠️ Warning: If the robot vacuum cleaner is guaranteed, don't disassemble it yourself, it will lead to a loss of warranty service.
In most cases, the “wound on the main” error is solved in 10-15 minutes of simple cleaning, but if the problem recurs often, you should consider replacing the brush or adjusting the cleaning schedule (for example, cleaning the brushes less often, but more thoroughly after each cleaning), Regular care will prolong the life of your robot vacuum cleaner and save money on repairs.