The Proscenic 850T V1.11 manual separates steady-red and flashing-red indicators. The number of beeps has different meanings depending on which red state is shown, so record both.
| Indicator | Beeps | Possible condition in the manual | Listed check |
|---|---|---|---|
| Steady red | 1 | Driving wheels may be stuck by foreign matter | Clean the driving wheels and restart. |
| Steady red | 2 | Side brushes may be stuck | Clean the side brushes and restart. |
| Steady red | 3 | Foreign matter may be in the fan | Clean the dust box and fan area as the manual directs, then restart. |
| Steady red | 4 | Main brush may be stuck | Remove its cover, clean the brush, and restart. |
| Flashing red | 2 | Bumper may be stuck | Press the anti-collision beam and check that its left, middle, and right sections rebound. |
| Flashing red | 3 | Cliff sensor dirty, robot suspended, or dark surroundings | Clean the lower cliff sensor or place the robot on level ground, then restart. |
| Flashing red | 4 | Battery level low | Charge the robot on its station. |
The manual describes possible causes, not confirmed component failures. A four-beep pattern illustrates why the indicator matters: it can mean a main-brush issue with steady red, but low battery with flashing red. When the robot cannot find its station and its battery becomes too low while searching, the manual also says it may flash red and beep four times; place it on the station to charge.
Use the V1.11 manual for this exact model. If the alert persists, follow Proscenic’s support route rather than ordering a part from the light or beep alone.