Pool Robot Troubleshooting & FAQs
Robot acting up or shopping questions on your mind? Our pool experts answer the most common robotic pool cleaner problems and questions — with straight advice and the right fix.
Troubleshooting Problems
Robot acting up? Diagnose the most common issues and fix them fast.
Why is my pool robot getting stuck on the main drain?
Is your robotic pool cleaner getting stuck on the main drain? Learn why it happens and the two proven fixes: a main drain clip or a Dolphin Sigma with the center-brush add-on.
Read the answerWhy is my pool robot not climbing walls?
Pool robot not climbing walls? The usual causes are a full filter, worn or slippery tracks, algae/biofilm on the walls, or a model that isn’t a wall climber. Here’s how to fix it.
Read the answerWhy is the light on my Dolphin power supply on (or blinking)?
A steady or blinking light on your Dolphin power supply usually signals a full filter, a stuck impeller, or a cord/connection issue. Here’s what each light means and how to reset it.
Read the answerWhy is my pool robot floating instead of sinking?
If your pool robot floats or won’t sink to the bottom, trapped air is almost always the cause. Learn how to purge air from the robot and get it cleaning again.
Read the answerWhy is my pool robot flipping over?
Pool robot flipping onto its back? Trapped air, an unbalanced load, worn tracks, or steep wall transitions are the usual culprits. Here’s how to keep it upright.
Read the answerWhy is my pool robot moving in circles?
A pool robot stuck driving in circles usually has a jammed track/wheel, a tangled cord pulling it, or basic bump navigation. Learn the fixes and the smart-nav upgrade.
Read the answerWhy is my pool robot missing spots?
Pool robot leaving dirty patches behind? Cord drag, a short cycle, poor navigation, or a full filter are the usual reasons. Here’s how to get complete coverage.
Read the answerWhy is my pool robot not picking up debris?
Robot driving around but leaving debris behind? A full or wrong-size filter, a clogged impeller, or trapped air are the top causes. Learn the fixes and the right filter to use.
Read the answerWhy is my pool robot losing suction?
Losing suction power? A clogged filter, jammed impeller, worn seals, or trapped air are the usual causes. Here’s how to bring your robot’s suction back to full strength.
Read the answerWhy is my pool robot stopping after a few minutes?
Robot shutting off shortly after starting? A tripped GFCI, an overheating power supply, a full filter, or a cord fault are the likely causes. Work through these fixes.
Read the answerWhy does my pool robot cord keep tangling?
Constant cord tangles usually mean the cable has "memory" coils, there’s no anti-tangle swivel, or the cord length doesn’t match the pool. Here’s how to stop it for good.
Read the answerHow do I untangle a pool robot cord?
Knotted robot cable? Here’s the fastest way to untangle a pool robot cord and keep it from re-tangling with an anti-tangle swivel and proper storage.
Read the answerHow do I stop my pool robot cord from tangling?
Stop pool robot cord tangles for good: relax the cable in the sun, use an anti-tangle swivel, right-size the cord, or switch to a cordless robot. Expert tips inside.
Read the answerEveryday Use & Care
How to run, store, and get the most out of your robotic pool cleaner.
Can you leave your pool robot in the pool?
Can you leave a robotic pool cleaner in the pool between cycles? Short-term is fine, but leaving it in permanently shortens its life. Here’s the expert recommendation.
Read the answerShould I remove my pool robot after each cleaning cycle?
Should you take your robotic pool cleaner out after every cleaning cycle? Yes — here’s the simple after-cycle routine that maximizes lifespan and keeps it working like new.
Read the answerCan I swim while the pool robot is running?
Is it safe to swim while a robotic pool cleaner is running? The manufacturer answer is no — always remove the robot first. Here’s why, and the safe way to do it.
Read the answerHow often should I run my pool robot?
How often should you run a robotic pool cleaner? For most pools, 2–3 times a week keeps water pristine. Learn what changes that and how a weekly timer automates it.
Read the answerHow much electricity does a pool robot use?
Robotic pool cleaners are remarkably cheap to run — typically just cents per cleaning cycle. Here’s the real math on a pool robot’s electricity use and cost.
Read the answerHow long does a pool robot last?
How many years does a robotic pool cleaner last? With good care, a quality robot runs 5–8+ years. Learn what shortens its life and how to make yours last.
Read the answerCan a pool robot replace pool service?
Can a robotic pool cleaner replace a weekly pool service? It handles the vacuuming and scrubbing, but not water chemistry. Here’s what a robot does and doesn’t cover.
Read the answerCan a pool robot lower my pool chemical use?
Can a robotic pool cleaner reduce how many chemicals you use? Indirectly, yes — by removing debris and circulating water, it eases chlorine demand. Here’s how it works.
Read the answerCan I use my pool robot when opening the pool for the season?
Can a robotic pool cleaner help with spring pool opening? Yes — once the water is clear enough and debris is skimmed, a robot with a leaf bag makes opening far easier.
Read the answerHow do pool robots work?
How does a robotic pool cleaner actually work? Low-voltage motors drive the unit and pull water through onboard filters — completely independent of your pool pump. Full breakdown here.
Read the answerFilters & Debris
Keep suction strong and water crystal clear with the right filtration.
How do I clean pool robot filters?
Learn the correct way to clean robotic pool cleaner filters — cartridges, panels, and fine screens — so your robot keeps full suction and lasts for years.
Read the answerHow often should I clean pool robot filters?
How often should you clean a robotic pool cleaner’s filter? Ideally after every cycle. Learn the right frequency and how a bigger debris canister lets you clean less.
Read the answerDo I need NanoFilters for my pool robot?
Are NanoFilters worth it for a robotic pool cleaner? If you battle fine debris, algae, pollen, or sand, yes. Learn what NanoFilters capture that standard filters miss.
Read the answerWhat filters should I use in my pool robot?
Standard, fine, or NanoFilters? Learn how to match your robotic pool cleaner’s filter to the debris you actually deal with for the cleanest possible pool.
Read the answerDo pool robots pick up algae?
Do robotic pool cleaners remove algae? They scrub and capture it — but only with fine enough filtration. Learn how to actually clear algae with a robot and NanoFilters.
Read the answerDo pool robots pick up sand?
Can a robotic pool cleaner pick up fine sand? Yes — with the right fine or NanoFilter media. Standard filters let sand slip through. Here’s how to clear sand fast.
Read the answerDo pool robots pick up leaves?
Do robotic pool cleaners handle leaves? Yes — and the best ones use large-capacity bins or an oversized leaf bag so they don’t clog. Here’s what to look for.
Read the answerCan a pool robot vacuum to waste?
Can a robotic pool cleaner vacuum to waste like a manual vacuum? No — robots filter and recirculate water. Here’s why, and what to do for very heavy debris.
Read the answerPools & Surfaces
What robots can (and can’t) clean across different pool types and finishes.
Can a pool robot clean steps?
Do robotic pool cleaners clean steps and stairs? Some do, many don’t reach them well. Learn which features let a robot climb steps and what to do for the ones that can’t.
Read the answerCan a pool robot clean a tanning ledge (sun shelf)?
Will a robotic pool cleaner clean a shallow tanning ledge or sun shelf? It depends on water depth and the robot. Learn which robots handle sun shelves and how to help.
Read the answerCan a pool robot clean an infinity pool?
Do robotic pool cleaners work in infinity / vanishing-edge pools? Yes — the main pool cleans normally. Learn how robots handle the weir edge and catch basin.
Read the answerCan a pool robot clean a beach entry pool?
Will a robotic pool cleaner work in a beach-entry / zero-entry pool? It cleans the deeper areas well; the very shallow gradual entry is the challenge. Here’s the full answer.
Read the answerCan a pool robot damage a pool liner?
Will a robotic pool cleaner damage or wear out a vinyl liner? A properly designed robot is safe and gentle. Learn what to avoid and which robots are liner-friendly.
Read the answerAre pool robots safe for vinyl pools?
Are robotic pool cleaners safe for vinyl-liner pools? Yes — when you use a vinyl-friendly robot with soft brushes and rubber tracks. Here’s how to choose one.
Read the answerCan a pool robot be used in saltwater pools?
Are robotic pool cleaners safe in saltwater pools? Yes — modern robots are built for salt. Learn the simple care steps that keep a robot working for years in salt water.
Read the answerCords, Power & Buying
Corded vs cordless, running costs, and whether an upgrade is worth it.
Can you use an extension cord with a pool robot?
Is it safe to use an extension cord with a robotic pool cleaner’s power supply? Manufacturers advise against it. Learn why and the safe alternatives.
Read the answerAre cordless pool robots worth it?
Are cordless robotic pool cleaners worth buying? They end cord tangles but trade off runtime and suction. Compare cordless vs corded to decide what’s right for your pool.
Read the answerAre expensive pool robots worth it?
Is a premium robotic pool cleaner worth the extra money? Often yes — better navigation, filtration, durability, and warranty. Here’s when to spend up and when not to.
Read the answerCan’t find your answer?
Our U.S.-based pool experts are here to help you diagnose an issue or pick the perfect robot for your pool — no bots, no pressure.
