Interactive diagnostic wizard for Hayward TigerShark, SharkVAC, and E-Vac robotic pool cleaners. Troubleshoot wall climbing, no movement, cord twisting, filter overload, and power supply issues.
Select the symptom your robotic cleaner is showing to get step-by-step troubleshooting guidance.
Click a symptom to see diagnostic steps.
This interactive troubleshooting wizard covers Hayward TigerShark, TigerShark QC, SharkVAC, and E-Vac robotic pool cleaners. These self-contained robots operate independently of your pool's filtration system, using an onboard pump, drive motors, and microprocessor-controlled navigation to clean your pool.
Select the "Homeowner" role for safe checks you can perform yourself, or switch to "Technician" mode for detailed component-level diagnostics including impeller inspection, drive motor testing, and scanner tool procedures.
| Symptom | Common Causes |
|---|---|
| Won't Climb Walls | Dirty filter, algae on walls, sharp pool corners, broken impeller, defective pump motor |
| Climbs Too High | Above-average traction, missing filter plate gasket, incorrect handle position |
| No Movement | Broken drive motor pin, belt/roller obstruction, impeller failure, power supply fault |
| Runs Only Seconds | Not fully submerged (out-of-water detection), low voltage, impeller obstruction |
| Cord Twisting | Handle position not alternated, pool obstructions catching the unit |
| Debris Falls Out | Filter overload, drain flaps displaced, large debris blocking intake |
| Flips Upside Down | Water in handle, defective motor |
The most common cause is a dirty filter. Clean the filter cartridge and try again. The robot may also need up to 30 minutes at the start of each cycle to map the pool before climbing walls. If the pool has sharp 90-degree bottom corners, the robot may struggle. For slick vinyl or tile surfaces, replace PVC rollers with foam rollers (only after ruling out a dirty pool condition). A broken impeller or defective pump motor can also prevent wall climbing.
The robot has an out-of-water detection feature. If it is not fully submerged, it will shut down within minutes. Make sure the unit is completely underwater before turning on the power supply. Also check the electrical source for proper voltage (115-125V). Do not use extension cords. If the problem persists, inspect the impeller for missing/broken blades or obstructions.
Clean the filter after every use for best performance. During initial use or spring startup, you may need to clean the filter every 30 minutes to 3 hours until the pool is in acceptable condition. Gently spray the filter elements with a garden hose. Do not use high pressure, as this can damage the filter elements.
The standard TigerShark runs a 4-hour cleaning cycle. The TigerShark QC has a Quick Clean mode that completes in 90 minutes, or you can select a full 4-hour cycle. The SharkVAC runs a 2-hour cycle. The robot will automatically shut down when the cycle is complete.
Yes. Select the "Homeowner" role and the wizard will show only the checks that are safe for a non-professional. Technician-level steps such as motor box removal and scanner tool diagnostics are hidden unless you switch to Technician mode. Always disconnect power before handling the robot and never allow swimmers in the pool while the cleaner is operating.
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