dreame L40 Ultra AE Saugroboter — Error codes & fixes
Troubleshooting guide for the dreame L40 Ultra AE Saugroboter. Diagnose an error code and find the fix.
Wi-Fi connection failure
wifi-connectThe purifier cannot connect to the app or Wi-Fi, blocking remote control and monitoring.
Source: Dreame support — robot vacuum troubleshooting
Confidence: 80%
Verified Aug 9, 2026
Bumper / cliff sensor error
error-1The robot reports a sensor fault and stops or moves erratically. The bumper or cliff sensors may be blocked by dirt or damaged.
Source: Dreame support — robot vacuum troubleshooting
Confidence: 90%
Verified Aug 9, 2026
Error 2 / general fault
error-2The machine displays a general error code, often requiring a reset or service.
Source: Dreame support — robot vacuum troubleshooting
Confidence: 90%
Verified Aug 9, 2026
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