The M213S manual pairs each alarm with a solid-red or flashing-red button, a beep count repeated three times, and an app instruction. Match all three details; this table is specific to the Lefant M213S.
| Button light | Beeps, repeated 3 times | Manual label | App instruction |
|---|---|---|---|
| Solid red | 1 | Driving wheel malfunction | Check for tangled hair or debris and clean the wheel. |
| Solid red | 2 | Side brush malfunction | Check for tangled hair or debris and clean the side brush. |
| Solid red | 3 | Vacuum fan not working normally | Remove dirt from the dustbin and clean the vacuum inlet. |
| Solid red | 5 | No dustbin | Install the dustbin. |
| Flashing red | 2 | Floor sensor alarm | Put the robot on the floor. |
| Flashing red | 3 | Robot suspended or stuck | Place it on an even surface or remove obstacles, then restart. |
| Flashing red | 4 | Low battery | Manually place the robot on its charging dock. |
| Flashing red | 5 | Charging adapter not working normally | Clean the robot and dock contacts and use the original adapter. |
| Flashing red | 6 | Charging error | Check that the power switch is on. |
For unresolved cases, the manual says to switch the robot off and on beneath the faceplate and then contact Lefant support. Follow the M213S instructions for that access; do not remove a cover from another model based on this page.
If the light or number of repeated tones differs, record the full pattern and check the exact manual. An alert does not by itself prove that a wheel, fan, battery, or adapter has failed.