You looked at the Xiaomi Mi Body Composition Scale or another model of the brand, and instead of the usual numbers, there was a mysterious combination of “OL.” What does it mean? Failure, software failure or just misuse? In this article, we will analyze all the possible causes of the OL error on Xiaomi scales, explain how to fix it, and give recommendations so that the problem does not recur.
The OL code is the standard for exceeding the maximum permissible weight for a particular weight model. However, in the case of Xiaomi equipment, this acronym can hide other nuances, from sensor malfunctions to synchronization errors with the Mi Fit application.
What does “OL” mean on Xiaomi scales: decoding and reasons
The OL symbols on Xiaomi's scale display are not a random glitch, but a clear signal of a problem, and 90 percent of the time, it points to one of three:
- 🔴 Most Xiaomi scales (such as the Mi Scale 2 or Smart Scale 2) are designed to weigh up to 150-180 kg. If you stand on a scale with a child or put a heavy object on a scale, the sensors will not be able to correctly measure the mass.
- 🔋 Batteries are discharged. When batteries are low, scales can produce false errors, including: OL, Even if the actual weight is normal.
- 🛠️ Sensor damage: Falling, hitting or getting moisture inside the housing can disrupt the weight-measuring strain gauges.
Less commonly, the OL error is caused by software failures, such as a failed firmware update via Mi Fit or a conflict with other devices in the Xiaomi ecosystem (such as the Mi Band fitness bracelet).
⚠️ Note: If Xiaomi scales show OL Even when no one is standing on them, this is a sure sign of hardware malfunction, in which case self-repair is not recommended - it is better to contact the service center.
Maximum weight for different Xiaomi weight models
To see if your weight is actually above the limit, compare it to the specifications of your model. The table below shows the data for the popular Xiaomi scales:
| Model of weights | Maximum loading | Minimum loading | Accuracy of measurement |
|---|---|---|---|
| Xiaomi Mi Body Composition Scale | 150 kg | 5 kg | ±50 g |
| Xiaomi Smart Scale 2 | 180 kg | 3 kg | ± 100 g |
| Xiaomi Mi Scale (First Generation) | 150 kg | 10 kg | ± 100 g |
| Xiaomi Mi Body Fat Scale | 160 kg | 5 kg | ±50 g |
Note that if your weight is close to the maximum for the model (for example, 145-150 kg for the Mi Body Composition Scale), the scale can give OL even if slightly exceeded.
Step-by-step: how to fix the OL error
If the OL code appears on the display, follow the following algorithm:
- Take the load off. Make sure there are no foreign objects on the scales (such as a mat, phone or bag) and stand on them without shoes or heavy clothing.
- Check the batteries. Remove the batteries (usually 4 AAA batteries), inspect them for corrosion or bloating, and replace them with new ones if necessary (Duracell or Energizer alkaline batteries are recommended).
- Reset the scales. Press and hold the power button (if any) for 10 to 15 seconds, then release. If the button is not, just remove the batteries for 1-2 minutes.
- Check the surface. The scales should be on a flat, firm and stable base (for example, on tile or laminate), carpet, soft floor or inclined surface distort the reading.
- Reset. Some models (such as Smart Scale 2) can reset to factory settings, press and hold the 20 seconds switch until the display shows "0.0".
If the OL error persists after all the manipulations, try syncing the scales with the Mi Fit app again:
Remove the device from the list in the Mi Fit app|Reboot your smartphone|Turn on Bluetooth.|Stand on the scale for re-synchronization|Update the firmware (if available)-->
If neither of these methods worked, the problem is likely hardware, in which case, contact the Xiaomi service center or the official seller (if the scales are warranty).
What to do if Xiaomi scales show OL without load
When the scales give off an OL error even when it's empty, it's a serious malfunction. Here are the possible causes and solutions:
- 🔌 Contact closure: Moisture or dust on the board can cause false load signals. Try to dry the scales gently with a hairdryer (at minimum power!) or leave them in a dry place for 24 hours.
- 🛠️ Weight sensors (tensometers) can fail after a fall or mechanical impact, and then you need to replace the sensors, which is difficult to do on your own.
- 📱 If the scales were recently updated via Mi Fit, the firmware may not be installed correctly. Try rolling it back to the previous version (if there is an option in the app).
⚠️ Warning: Don't take the scales apart yourself if you don't have any experience with electronics! Inside the case are fragile parts that are easily damaged.
If the scales are new (bought less than 14 days ago), return them to the seller under the Consumer Protection Act. If the warranty period is still valid (usually 12 months), contact the authorized Xiaomi service center.
How to avoid OL error in the future: preventive measures
To prevent the OL error from reappearing, follow these guidelines:
- 📏 If your weight is close to the maximum for the model, use a scale with a large limit (for example, Xiaomi Smart Scale 2 up to 180 kg).
- 🔋 Keep an eye on the batteries. Change the batteries every 6 to 12 months, even if the scales are working.
- 🧹 Keep the scales clean. Rub the platform regularly with a wet wipe and avoid water entering the body.
- 📱 Update your firmware. Install the latest versions of the software through Mi Fit, but only do so with a stable Wi-Fi connection.
- 🏠 Keep it properly. Do not leave the scales in places with high humidity (bathroom) or in direct sunlight.
Important: If you use Xiaomi scales to measure the weight of pets, consider that their paws may not evenly distribute the load on the sensors. OL.
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Before you first use the new Xiaomi scales, calibrate: stand on them for 5 seconds, then step off. Repeat 2-3 times. This will help the sensors get used to your weight.
Frequent questions about Xiaomi weights and the OL error
Can Xiaomi scales show OL due to low temperature?
Why does the battery change the OL error?
Can you repair Xiaomi scales with an OL error yourself?
Libra shows OL, but I'm definitely less than 150kg. What's the matter?
After the fall of the scales Xiaomi began to show OL. What to do?
Alternative ways to measure weight if Xiaomi scales don't work
While you are solving the problem with the OL error, you can use alternative methods:
- 🏋️ Mechanical scales: The old spring-operated floor scales are independent of electronics and batteries. They are less accurate (±500 g), but for temporary use is suitable.
- 📱 Smartphone apps: Some fitness apps (like Google Fit or Apple Health) can measure weight from photos or data from other devices (like the Mi Band), a method that is minimally accurate, but can be used to track dynamics.
- 🏠 Public scales: Some fitness clubs, pharmacies or clinics have a scale for visitors.
If you're used to Xiaomi's smart weights and their features (body composition analysis, app sync), consider buying a new model.For example, the Xiaomi Smart Scale 2 or Mi Body Composition Scale 2 have improved sensors and are less likely to give out errors.
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The OL error on Xiaomi scales is 99% due to overload, discharged batteries or hardware malfunction. If simple steps (replace batteries, restart) did not help, contact the service.