Disassembly of the air humidifier Xiaomi Mi Smart: detailed instructions with nuances

Xiaomi Mi Smart air humidifier (models) JSQ01ZM, JSQ02ZM, JSQ03ZM) — It's a popular device for maintaining optimal microclimate, but over time, even it needs cleaning or repair, and lime plaque, mold or dust accumulate inside the enclosure, which reduces efficiency and can cause unpleasant odors. The manufacturer does not recommend disassembling the device yourself, but with a careful approach, this is quite real.

In this article, you will find a step-by-step photo guide to how to disassemble the Xiaomi Mi Smart humidifier without damage, what tools you will need, and what to look for when you reassemble, and we will also reveal the typical errors that lead to breakdowns, and give tips for caring for internal components. If your device stops turning on, does not spray steam well or makes strange sounds, disassembly will help to identify the cause.

Preparation for disassembly: tools and security measures

Before you start, make sure that the humidifier is off the grid for at least 30 minutes, which will eliminate the risk of short circuits. Also drain the water completely from the tank and dry it. Wet parts are harder to dismantle, and residue water can damage electronic components.

You'll need:

• 🔧 Plastic spatula (mediator or special tool for disassembling phones) – so as not to scratch the body.
• ⚒️ Cross screwdriver (usually) PH0 or PH1) screw.
• 🧴 Isopropyl alcohol 90%+ — Cleaning contacts and sensors.
• 📸 Smartphone – to photograph the process (useful when reassembling).
• 🧤 Rubber gloves – protection from residues of chemical cleaners.

⚠️ Warning: Don't use metal screwdrivers to slap latches, they leave scratches and can break the locks. If you don't have a plastic blade at hand, an old bank card will do.

Disassemble the device on a soft surface (towel, rubber mat) so as not to scratch the case and not lose small details. If the humidifier was in a room with high humidity, dry it for at least 2 hours before disassembling - this will prevent corrosion of the contacts.

Removal of the upper cover and water tank

To start with, the simplest thing is to dismantle the removable parts. In Xiaomi Mi Smart models, the top cover is mounted on 4 latches (two on each side) and one central latch, to remove it:

1. Place the humidifier on a flat surface with the upper part to yourself.
2. Carefully insert the plastic blade into the gap between the lid and the body on the right or left side.
3. With a light press, click the first latch - you will hear a characteristic click.
4. Repeat the action for the other three latches, moving around the perimeter.
5. Lift the lid up - it should separate effortlessly.

Under the lid, you'll see a water tank (usually white or transparent) attached to two guides and one lock at the bottom to extract it.

• 💧 Carefully pull the tank over yourself, swaying slightly from side to side.
• 🔄 If it doesn't lend itself, check if a float water level sensor blocks it (a thin plastic tube on the side).
• 🧼 After extraction, wash the tank with warm water with vinegar (1:1) to remove plaque.

⚠️ Warning: Don't pull the tank with force - there may be water inside it that will fall on the electronic board. If the liquid does spill, immediately dry the board with a hairdryer (cold mode!) for 10-15 minutes.

Dismantling of the electronic module and fan

After removing the lid and tank, you will have access to the main unit where:

• 💨 Fan (sprays steam).
• 📱 Electronic board with control chip.
• 🌡️ Humidity sensor (in some models).
• 🔋 Piezoelectric element (generator of ultrasonic oscillations).

To dismantle this block:

1. Turn 4 screws (usually under a cross screwdriver) on the bottom of the body.
2. Carefully turn the humidifier over and remove the lower cover - it is held on 2-3 latches.
3. Disconnect the power connector (white or black plug) from the board.
4. Remove the electronic module by pulling it up. Be careful with the humidity sensor wires - they're brittle!

The fan is attached to the module on two screws and one locker, to remove it:

• 🔧 Turn the screws away (usually) PH0).
• 🌀 Carefully turn the fan counterclockwise - it will be removed from the shaft.
• 🧹 Clean the blades of dust with a soft brush or compressed air.

Cleaning and maintenance of internal parts

After disassembly, it is time to clean up critical nodes that affect the operation of the humidifier.

• 🧂 Lime raid on the piezoelectric element and tank.
• 🍄 Mold in hoses and filters.
• 🔥 Overheating of the fee due to dust.

Use:

• 🧽 Acetic acid (7-9%) - removes plaque. Dilute with water 1:1, pour into the tank for 1 hour.
• 🧴 Hydrogen peroxide 3% - disinfects and removes mold. Apply for 10 minutes, then rinse.
• 🧼 Toothbrush - for mechanical cleaning of hard-to-reach places.
• 💨 Compressed air - blows dust out of the fan and board.

And if you pay special attention to the piezo cell, which is the heart of the humidifier, if it's got a thick layer of plaque, it'll work poorly or it won't work at all.

1. Wet the cotton swab in vinegar.
2. Gently wipe the metal membrane without pressing.
3. Rinse with distilled water and dry.

⚠️ Warning: Do not use abrasives (baking soda, sand) or hard brushes - they will damage the membrane of the piezoelectric element. If the plaque is not removed, soak the part in vinegar for 2-3 hours.

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After cleaning the piezoelectric element, check its performance by dripping a few drops of water on the membrane. When the device is turned on, small ripples should appear on the surface of the water.

Diagnosis of malfunctions: when disassembly did not help

If the Xiaomi Mi Smart humidifier doesn't work after cleaning and assembly, the problem may be the electronics.

For the diagnosis of the control board:

1. Check the fuse (usually located next to the power connector) If it burns, replace it with a similar one (the nominal is indicated on the case).
2. Check the capacitors – swollen or sweaty parts need to be replaced.
3. Call transistors and diodes on the board (in diode check mode, the multimeter should show 0.5–0.7V).

In Xiaomi Mi Smart models, after 2021, the control board has a flush protection. If you connect the power incorrectly, the device will not turn on until the error is reset (you need to disconnect the battery). BIOS 10 seconds).

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If the humidifier doesn't respond to the buttons, but the lights are on, the problem is with the clock button or its contacts, most often cleaning with alcohol or replacing the button.

Reverse Assembly: How to Avoid Mistakes

You need to collect the humidifier in reverse order, but there are several critical points:

• 🔌 Connect connectors: make sure the control board plugs are tightly embedded in the nests. Incorrect connection can lead to short circuit.
• 🔄 Fan position: the blades shall be directed upwards (to the vapor outlet).
• 💧 O-ring gums: If they're shifted, water will leak. Check their position before closing the lid.
• 🔧 Tightening screws: don't pull them over - plastic inserts can crack.

After assembly:

1. Put distilled water (not tap water!) in the tank.
2. Turn on the humidifier and check:

hull-temperature

⚠️ Attention: If the humidifier starts leaking after assembly, immediately disconnect it from the mains.The reason is usually an improperly installed seal or cracked tank.

Where to buy spare parts for Xiaomi Mi Smart

If you find faulty parts in the process, you can replace them.

• 🌍 Xiaomi's official service is guaranteed quality, but high price, suitable for a control board or piezocell.
• 🔧 Local workshops – sometimes sell used parts from donor devices.

Average Parts Prices (2026):

Before buying, specify the exact model of the humidifier (written on the sticker below) - spare parts from the JSQ01ZM may not come close JSQ03ZM.

FAQ: Frequent questions about the dismantling of Xiaomi Mi Smart