Xiaomi robot vacuum: error Error 3Error 4
Code Error 3 / Error 4 on a Xiaomi robot vacuum display means: the robot is not on the floor or the cliff sensor is dirty.
- Meaning
- The robot is not on the floor or the cliff sensor is dirty
- Check first
- Put the robot on a flat, hard floor.
- Repair shop
- 270–680 zł
Most common causes
- Wheels lifted
- Dirty cliff sensor
What you can check yourself
Put the robot on a flat, hard floor.
Wipe the sensors on the underside with a soft, dry cloth.
Start the robot again from a different spot.
- the error keeps coming back after these checks,
- water is leaking or you smell burning,
- the appliance trips the circuit breaker.
More detail in our guide: Robot vacuum →
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What does error Error 3 mean on a Xiaomi robot vacuum?
Code Error 3 / Error 4 means: the robot is not on the floor or the cliff sensor is dirty. The most common causes: wheels lifted, dirty cliff sensor.
Can I keep using the robot vacuum with error Error 3?
If the error goes away after the checks above, yes. If it keeps coming back, water leaks, you smell burning or the breaker trips, stop using it and call a repair service.
Other codes: Xiaomi robot vacuum
- Error 2bumper is stuck
- Error 5 / Error 6foreign objects in the main or side brush
- Error 7the wheels are blocked (e.g. wrapped in hair)
- Error 8the robot is stuck or something is blocking it
- Error 9 / Error 10dust bin missing or filter clogged
- Error 13charging error
- Error 14battery fault (e.g. temperature too low or too high)
A code can mean different things on different models and years. Always check the manual or the manufacturer's support page too. Repair prices are approximate, for repair shops in Poland.