The Coredy R750 V3.2 manual separates its troubleshooting table into steady-red and flashing-red states. The beep count changes the likely cause, so do not interpret the number without the indicator.
| Indicator | Beeps | Manual’s likely cause | Listed check |
|---|---|---|---|
| Steady red | 1 | Driving wheel stuck | Clean the wheel and press power to restart. |
| Steady red | 2 | Side brush stuck | Clean the side brush and restart. |
| Steady red | 3 | Vacuum fan stuck or filter clogged | Empty the bin, clean the filter, tap the bin briskly, and check the inlet for blockage. |
| Steady red | 4 | Main rolling brush stuck | Clean the rolling brush and guard, then restart. |
| Flashing red | 2 | Bumper stuck | Dislodge debris and press the bumper 5–10 times to check that it moves freely. |
| Flashing red | 3 | Cliff sensors dirty, robot over a drop, or dark surface | Gently clean sensors with a dry cloth and move the robot away from a drop or dark surface. |
| Flashing red | 4 | Low battery or robot unable to return to dock | Manually place it on the dock; clear obstacles and wipe the robot and dock contacts with a clean, dry cloth. |
The manual describes likely causes rather than a confirmed diagnosis. It says switching the robot off and on may help some errors; unresolved problems should go to Coredy support. Do not infer a motor or sensor replacement from a red light and beep count.
Use the R750 V3.2 manual for this exact model. For another robot or an alert that does not match the table, see the alert identification workflow.