Xiaomi Mijia Air Humidifier is one of the most popular devices in Xiaomi’s smart home lineup. Compact, stylish and functional, it requires regular maintenance and sometimes disassembly for deep cleaning or minor repairs. However, the manufacturer rarely reveals details of the internal device, leaving users alone with the question: “How to disassemble the humidifier without breaking it?”
In this article, you'll find step-by-step instructions with the photo, hidden nuances (such as how to remove the bottom lid without scratching), and a list of tools you'll actually need. We'll also take a look at the common mistakes that break the latches, and give tips for safe assembly after cleaning. If your Mijia starts making noise, doesn't spray water well, or smells of mold, this is the guide for you.
⚠️ Important: Disassembling the Xiaomi Mijia humidifier is no longer warranty unless the device is older than 12 months!
Preparation for disassembly: tools and security measures
Before you get to the screwdriver, make sure you have everything you need. Inappropriate tools are the main reason for broken latches and scratches on the body.
- 🔧 Plastic blade (or mediator) - for careful lid tweaking. Metal screwdrivers leave traces!
- ⚙️ Cross screwdriver (size) PH0 or PH1) — screw-hole.
- 🧴 Isopropyl alcohol 90%+ — for cleaning contacts and ultrasonic membrane.
- 🧽 Soft fabric without pile - microfibre or flannel, so as not to damage the surface.
- 📸 Smartphone – to photograph the disassembly process (useful for reverse assembly).
Safety first: before disassembling, be sure to turn off the humidifier from the socket and drain all the water. Even residual moisture on the contacts can cause a short circuit when accidentally turned on. If the device smelled like a burn or sparkled, do not disassemble it yourself, contact the service!
Also, prepare the workplace: cover the table with a light cloth (so as not to lose small details) and ensure good lighting. It is best to disassemble the humidifier in the daytime by the window or under the table lamp.
Removal of the upper cover and water tank
To start with, the simplest part is the removal of removable parts: in the Xiaomi Mijia Smartmi Evaporative Humidifier 2 (and similar), the top cover is attached to two latches and a magnetic lock, and here's how to remove it without damage:
Step 1. Turn the humidifier upside down and find two small notches on the sides of the bottom of the lid, insert a plastic spatula into them and gently press up until you hear a click.
Step 2. After you snap the two locks, pull the lid on you, it should be separated effortlessly. If the lid is "stiffened," don't pull it! Fly around the perimeter with warm water (not boiling water!) and wait 5 minutes.
Step 3: Remove the water tank. In some models (Mijia JSQS01ZM), it is fixed with an additional latch on the bottom — raise it at a 45° angle.
Make sure the water is completely drained |
Disconnect the device from the socket |
Prepare a soft substrate for parts |
Take a photo of the initial position of the cover-->
⚠️ Warning: If the lid fails, don't use force! In the 2021 Mijia models, a third lock is added at the front - it must be pressed simultaneously with the side latches.
Dismantling the bottom panel and access to electronics
Now, the hard part is removing the bottom cover, which is the ultrasonic membrane, the fan and the control board, and the key is not to damage the wiring and the sealed gaskets.
Step 1: Turn over the humidifier body and find 4 rubber legs, and underneath them are the screws -- gently tuck the legs in with a flat screwdriver and remove them.
Step 2. Unscrew 4 screws (usually under the PH0 cross screwdriver). In some models (Mijia CA1), the screws can be under the Torx T5 - check in advance!
Step 3. Once the screws are removed, the bottom panel is still held on 6 plastic latches. Start with the corners: insert the blade into the slot and lead it around the perimeter, alternately snapping the locks. If the panel does not respond, check if all the screws are twisted - often users miss one screw under the sticker!
| Moisturizer model | Type of screw | Number of latches | Features |
|---|---|---|---|
| Mijia JSQS01ZM | Cross PH0 | 6 | Additional latch under the tank |
| Mijia CA1 | Torx T5 | 4 | Screws hidden under rubber legs |
| Smartmi Evaporative 2 | Cross PH1 | 8 | Two latches in front under the decorative panel |
⚠️ Attention: When you remove the bottom panel, you'll see a sealed gasket on the edge of the body. Don't hurt it! If the gasket is torn, the humidifier will leak after assembly. If necessary, replace it with a similar one (you can cut it from a silicone sheet thicker than the one you want). 1-2 mm).
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If the latches break when disassembled, they can be temporarily replaced with droplets of glue "Moment Crystal" - it is transparent and does not spoil the appearance: XMSH03KIT).
Cleaning of the ultrasonic membrane and fan
Once you've disassembled, you'll get to the heart of the humidifier, the ultrasonic membrane and the fan, and that's where the most scalp and bacteria accumulate, and here's how to clean them without damage.
1. Ultrasonic membrane
- 🧪 Remove the membrane from the fasteners (usually it is fixed on the 2-3 plastic clips).
- 🧽 Wash it under running water, then soak it in a solution of citric acid (2 tbsp per 1 liter of water) for 30 minutes.
- 🧴 To remove mold, use hydrogen peroxide 3% - apply for 5 minutes, then rinse.
- ⚠️ Never rub a membrane with hard brushes! It's covered with a thin conductive layer that's easy to damage.
2. Fan
- 🌀 Remove the fan blades (they are attached to the central nut or latch).
- 🧹 Remove dust from the blades with a soft brush or vacuum cleaner at minimum power.
- 🛠️ If the fan creaks, drop 1 drop of silicone lubricant on the axle (do not use it). WD-40!).
3.Contacts and management fees
- 🔌 Wipe the power contacts and connectors with isopropyl alcohol (at least 90%).
- 🔍 Check the board for oxidation or burnt-out elements. If there are black spots, the device should be carried to the service.
What happens if you don't clean the membrane?
Diagnosis of malfunctions: when disassembly will not help
Sometimes users disassemble the humidifier to fix the malfunction, but the problem lies deeper. Here are the symptoms in which disassembly is useless (or even dangerous):
- ⚡ The humidifier is not turned on, but the indicator is on → The problem is the control board or the power supply, you need a soldering iron and a multimeter.
- 💧 Water is not sprayed, although the membrane is clean. → Burned generator high frequency (part on the board, similar to a large transistor).
- 🔊 Heavy noise or vibration → Wear of the fan bearing, replacement is possible, but the part must be ordered from the official dealer.
- 🌡️ Automatic shutdown through 5-10 minute → The heat sensor went off because it was overheating, because it was a clogged vent or a faulty cooler.
If you find one of these problems, do not try to fix it yourself without experience with electronics. Contact the Xiaomi service center or a proven wizard. The cost of repairing the control board usually does not exceed 1500-2000 rubles, while a new membrane or fan will cost 2-3 times cheaper.
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If the Xiaomi Mijia humidifier is older than 3 years and requires a replacement membrane or board, it is often more profitable to buy a new one. Repair will cost 60-80% of the cost of the device, and the resource of repaired parts is unpredictable.
Assembly of the humidifier after cleaning or repair
Collecting the humidifier back is often harder than disassembling it, and here's a step-by-step algorithm to help avoid errors:
Step 1. Checking the leakage
- 🔍 Make sure all pads are in place and not damaged.If they're dried or cracked, replace them.
- 💧 Apply a thin layer of silicone lubricant to rubber seals – this will prolong their service life.
Step 2: Installation of membrane and fan
- 🌀 Hold the membrane on its seat, it should lie flat, without skewing.
- 🔧 Set the fan and lock it with a screw or a latch. Make sure the blades rotate freely.
Step 3. Mounting the bottom panel
- ⚙️ Carefully combine all the latches and press the panel until the characteristic clicks. Start with the corners!
- 🔩 Twisting the screws, but don't tug - plastic can crack.
Step 4. Test launch
- 💡 Connect the humidifier to the network and pour water. It should turn on without any extraneous sounds.
- ☁️ Check if there's steam. If there's no steam, but the fan's working, the membrane is not installed correctly.
⚠️ Warning: After assembly, do not turn the humidifier on immediately to maximum power. 1-2 level 10 If you're leaking water from under the lid, take the device apart and check the gaskets.
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To make it easier to assemble, take a photo or video of the process before dismantling, or better yet, arrange the parts in the order of their removal on the table (left to right).
Tips for extending the life of the moisturizer
To avoid having to disassemble Xiaomi Mijia every 3 months, follow these guidelines:
- 💧 Use distilled or filtered water – this will reduce the formation of scale on the membrane.
- 🧼 Wash the tank once a week with a weak solution of vinegar (1:10) or special tablets for humidifiers.
- 🌬️ Do not put the device near the battery or on a draft - this leads to overheating and accelerated wear.
- 🔄 Change the water daily, even if the humidifier is not used. Stagnant water is a breeding ground for bacteria.
- 🛡️ Keep the humidifier in a dry place with the lid open if you don’t use it for longer than a week.
If you live in a region with hard water, consider buying a softener cartridge (for example, Xiaomi Mijia Filter), which costs about 500 rubles, but prolongs the life of the membrane by 2-3 times.