Yeah, this is super common and it’s not you doing anything wrong. A lot of robotic vacuums struggle with main drains, especially if the cover sits even a little higher than the pool floor or has open slots the wheels can bite into.
What’s happening is the robot approaches the drain head-on, slows down, and then kind of “locks” itself onto it. Once the drive wheels lose traction, it just sits there spinning until you rescue it. That’s why it feels like it happens every cycle in the same spot.
A few things that actually help, starting with the easiest:
– Fully stretch the cable out straight before each run. If the cord is pulling toward the drain, it almost guarantees the robot will keep ending up there.
– If your robot has different modes, avoid the aggressive or deep-clean setting. Those slow the robot down and make it more likely to hang up on obstacles.
– Some models let you adjust buoyancy with floats on the cable. Making it slightly more buoyant reduces how hard it presses down on the drain cover.
The most reliable fix long-term is what Freddie mentioned, a drain cover protector or low-profile, robot-friendly drain cover. It creates a smooth dome so the robot rolls right over instead of climbing and getting stuck. Once people install those, the “rescue every 20 minutes” problem usually disappears completely.
So no, your robot isn’t defective. It’s more a case of modern robots meeting older or raised drain designs. Cable management can reduce it, but a drain cover fix is usually the set-it-and-forget-it solution.