For the first two months our Roborock S6 worked fine, but starting a few weeks ago it began stopping in the middle of vacuuming rugs with the same error message: "Main brush might be blocked. Remove and clean it."
The first few times I did remove and clean the main brush by following the instructions, but the problem didn't stop. The S6 now never gets through a cleaning without stopping several times on rugs with this same error message. I finally ordered new brushes, but installing a new brush didn't fix the problem, either.
The rugs are normal pile, nothing difficult.