Screaming robot vacuum cleaner Xiaomi: the reasons and how to fix yourself

Your Xiaomi Mi Robot Vacuum, Viomi or Dreame started making annoying creaks when you were driving? It's not just a nasty sound, it's a signal of possible malfunctions that could eventually make your device malfunction. 80 percent of the time, it's due to mechanical problems, but sometimes it's software failures or malfunctions.

In this article, we will discuss 7 The main causes of creaking in Xiaomi robot vacuum cleaners (including models) S50/S51, STYJ02YM, Dreame D9 We will give step-by-step instructions on diagnosis and troubleshooting, and also tell you when to contact the service center.

1. Wheel wear or pollution is the most common cause of squeaking

More than 60 percent of creaking complaints are related to robot vacuum wheels, and Xiaomi models use two types of wheels:

• 🔄 Main drive wheels (with motor and gearbox) - wear out faster due to high load.
• 🌀 Mobile roller wheel (front or back) – creaks when dirt hits the bearing.

How to check:

1. Turn the vacuum cleaner over and manually scroll each wheel.
2. Screak when spinning without a load? So the problem is the bearings or the axle.
3. Screak only under the weight of a robot?

Once a week.|Once a month|Only when it starts to creak.|Never cleaned.-->

Xiaomi Mi Robot Vacuum-Mop 2 Pro and Dreame Bot Z10 The Pro often creaks the front roller wheel because of a design defect: its axis is too short, and over time the plastic body rubs against the metal sleeve. ZNMS12AWM most models).

⚠️ Attention: Don't lubricate the wheels WD-40 They attract dust and accelerate wear. Use only silicone lubricant (e.g. Liqui Moly Silicon-Fett).

Problems with the gearbox of the drive wheels

The gearbox transmits the rotation from the motor to the wheels. Xiaomi's robot vacuum cleaners use plastic gears that over time:

• 🔧 Washing (especially during intensive operation on carpets).
• 🧹 Clogged with dust and hair.
• 💧 Lose the lubricant (the manufacturer saves on its quantity).

Signs of a gearbox malfunction:

To diagnose the reducer:

1. Remove the wheel (unscrew 3 Torx screws) T8).
2. Pull the gearbox axis upwards – if there is a backlash of more than 1 mm, a replacement is required.
3. Check the gears for chips (use a flashlight).

Torx screwdriver T8|Flat screwdriver for clippings|Silicone lubricant|New gearbox (if necessary)|Tweezers for pulling gears-->

3. Contamination of bearings and axles

The bearings in Xiaomi's robot vacuum cleaners are closed, but dust still penetrates the microgaps.

• 🌀 The bearing of the main shaft (creaks when the brush is rotated).
• 🔗 Roller wheel bearing (often creaking in Viomi models) V2).
• ⚙️ Fan motor bearing (rare but found in Dreame) F9).

How to clean the bearing indiscriminately:

1. Apply the alcohol or contact cleaner on the axle (not on the bearing itself!).
2. Scroll the wheel/brush 20-30 once the liquid has penetrated.
3. Dry with a hair dryer (cold air!) 5-10 minute.
4. Apply 1 drop of silicone lubricant to the axle.

⚠️ Warning: If the bearing is crunchy or has a backlash, cleaning won't help, it needs to be replaced. 1500-2500 ₽, You can do it yourself (you need a bearing and press).

Defects of the plastic case

The body of the robot vacuum cleaner is made of ABS plastic, which over time:

• 🔥 Deformed from overheating (if the vacuum cleaner worked without interruption) >2 hours).
• 💥 It cracks in the places of mounting wheels (especially in Xiaomi Mi Robot). 1S).
• ☠️ Struggle against each other internal elements (for example, the battery cover on the body).

How to determine if the creak comes from the body:

1. Turn on the vacuum cleaner and slightly press on different parts of the body.
2. If the creak changes or disappears - the problem is the friction of plastic parts.
3. Examine the body for cracks or dents (use a magnifying glass).

Decisions:

• 🛠️ Put an insulation tape between rubbing parts.
• 🔧 Tighten all the screws of the body (often weakened by vibration).
• 🔥 When deformed from overheating - let the vacuum cleaner cool 12+ hours (plastic will partially restore the shape).

💡

If the crack on the body is small (up to 3 cm), it can be temporarily "cured" with Loctite Plastic Bonder epoxy glue. Apply glue on both sides and fix tape for 24 hours.

5. Side brush problems

A side brush (also known as a side brush) can creak for three reasons:

1. Wear of the bearing at the place of attachment of the brush to the motor.
2. Deformation of the brush (fibers cling to the body).
3. Axis contamination with hair and threads.

Diagnosis:

1. Remove the side brush (press the lock and pull up).
2. You can play it by hand -- is there a creak?
3. If the engine creaks without a brush, disassembly and cleaning of the gearbox is required.

In the Dreame Bot models L10 Pro and Xiaomi Mi Robot Vacuum-Mop P often creaks left side brush due to factory defect: its axis is shorter by 0.5 mm than the right. ZNMS05AWM).

6. Software failures and calibration errors

Yes, creaking can be connected with more than just mechanics. 5-10% the cause of the cases:

• 🤖 Incorrect calibration of wheels (after updating the firmware).
• 📱 Failure of the gyroscope (the robot “thinks” that it is going crooked, and overloads one wheel).
• 🔄 Error in the motion algorithm (e.g., in Turbo mode).

How to check:

1. Reset the settings to factory: press the Home and Power buttons for 10 seconds.
2. Update the firmware through the Mi Home app (Settings section) → Update of the PO).
3. Check the work in different modes (Silent, Balanced, Turbo).

If the creaking only appears in Turbo mode, the problem is overloading the wheels. The solution is to limit the maximum speed through the application (in Mi Home, go to Cleaning Settings). → Additionally. → Speed limit).

1. Place it on a flat surface.

2. Press the Spot Cleaning button for 3 seconds.

3. Wait for the beep (2 short squeaks).-->

7 When squeaking is a sign of serious breakdown

If none of the above methods worked, squeaking may indicate critical malfunctions:

In these cases, self-repair is not recommended. contact the authorized Xiaomi service center (list on the website). mi.com/ru/service/center). Before the visit:

• 📋 Write down the serial number of the vacuum cleaner (located under the battery cover).
• 📸 Make a video with a demonstration of squeak (this will speed up the diagnosis).
• 🔋 Check if the warranty is valid (in the Mi Home app, Device section) → Guarantee).

⚠️ Warning: If the robot vacuum cleaner is warranty, DO NOT disassemble it yourself! This will void warranty obligations. → Settings → Error log) and determine whether creaking is a manufacturing defect.

FAQ: Frequent questions about creaking in Xiaomi robot vacuum cleaners