Support answer · Use & Maintenance
What is the DebrisLock filter technology and how does it work?
Short answer: DebrisLock™ releases and traps filter debris automatically, so the filter may go up to 2 weeks between cleanings in UltraRun™ mode.
Based on Maytronics support, updated 2026-01-20, rewritten by Poolbots' pool experts. Parts that fix it are below.
The answer
What to know.
DebrisLock™ is a self-cleaning filter system. It reverses the motor’s suction direction to create a pumping action inside the filter. That pressure releases debris from the filter panels.
The loosened debris settles into a second chamber at the bottom of the filter. This chamber is designed to trap the debris and prevent it from returning.
During this backwash cycle, the robot stays in place for about five minutes, and its main status LED blinks.
Automatic filter cleaning helps improve overall pool performance and reduces how often you need to remove the robot to clean its filter. In UltraRun™ mode, the filter may go up to 2 weeks without needing cleaning.
Source: Maytronics support. Same steps and facts, rewritten for clarity; the videos and illustrations are Maytronics' own.
Replacement parts
Parts that fix this.
This answer comes down to filters. The exact part depends on the model: choose your robot and we open its parts list, or browse the category for every model.
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