A useful pool diagnosis begins with the symptom, the event that preceded it, and one safe separating test—not a color guess or another automatic treatment. Start with the Pool Problem Solver when you need a route, then use the complete guide for evidence, actions to avoid, and the professional-help threshold.
Interactive triage
Rank the safest next checks
The deterministic solver covers water appearance, circulation, filter, and robotic-cleaner symptoms. Unknown inputs stay unknown, results are plausible branches rather than diagnoses, and no chemical amount is calculated.
Pool Rescue: water, weather, and treatment clues
Green, cloudy, and slippery
Re-entry, foam, stains, and storms
Circulation and filter troubleshooting
Pump and flow
Filter media and service interval
Robotic-cleaner troubleshooting
- Robotic cleaner will not climb walls
- Robotic cleaner gets stuck on drains or steps
- Cleaner runs but leaves fine debris behind
- Cordless cleaner will not charge
- Cleaner cord keeps tangling
Keep reusable facts separate from a diagnosis
Use the Pool Volume Calculator to save measured pool facts in My Pool. After normal, safe circulation is restored, the pump calculator can document an energy and theoretical-turnover scenario. For cleaner fit rather than a fault, use the Robotic Pool Cleaner Finder and verify the evidence in the public cleaner database.