roborock QV 35A Set Saugroboter — Error codes & fixes
Troubleshooting guide for the roborock QV 35A Set Saugroboter. Diagnose an error code and find the fix.
Error 42 — maintenance brush jammed
error-42The maintenance brush is jammed and needs to be cleared.
Source: Roborock Support Center — troubleshooting
Confidence: 85%
Verified Aug 9, 2026
Wi-Fi connection failure
wifi-connectThe purifier cannot connect to the app or Wi-Fi, blocking remote control and monitoring.
Source: Roborock Support Center — troubleshooting
Confidence: 80%
Verified Aug 9, 2026
Loss of suction
suction-lossThe vacuum loses suction, often from a clogged filter, full bin, or a blocked hose.
Source: Roborock Support Center — troubleshooting
Confidence: 80%
Verified Aug 9, 2026
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