A robotic pool cleaner that diligently scrubs the pool floor but stubbornly refuses to climb walls or clean the waterline is a common frustration for pool owners. While several factors can contribute to this issue, the most frequent culprit is a simple one: a full filter basket. This article focuses on this primary cause, providing a step-by-step guide to cleaning the filter basket and explaining why regular maintenance is crucial for optimal cleaner performance.

The Problem: Floor Cleaning Only

A robotic pool cleaner designed for full coverage should effectively clean the floor, walls, and waterline. If your cleaner is only cleaning the floor and neglecting the walls or waterline, it’s not performing as intended. This often manifests as:

• No Wall Climbing: The cleaner attempts to climb the walls but quickly loses traction and falls back to the floor.
• Incomplete Waterline Cleaning: The cleaner fails to reach or adequately scrub the waterline area.
• Reduced Suction: You might notice a decrease in the cleaner’s overall suction power, even on the floor.

The Primary Cause: A Full Filter Basket

The filter basket is responsible for trapping debris, leaves, and other impurities collected by the cleaner. When the basket becomes full, it restricts water flow, significantly reducing the cleaner’s suction power. This reduced suction directly impacts its ability to climb walls. The cleaner relies on suction to adhere to the vertical surfaces, and a clogged filter severely compromises this ability.

Step-by-Step Guide to Cleaning the Filter Basket

Cleaning the filter basket is a quick and easy process:

1. Power Off and Disconnect: Before handling the cleaner, always turn off the power supply and disconnect the cable. This is a crucial safety precaution.
2. Remove the Cleaner from the Pool: Carefully lift the cleaner out of the pool and allow excess water to drain.
3. Locate the Filter Basket: The filter basket’s location varies slightly depending on the cleaner model. Consult your owner’s manual for specific instructions. It’s often located on the top, bottom, or side of the cleaner.
4. Remove the Filter Basket: Most filter baskets are easily accessible and can be removed by releasing a latch, clip, or handle.
5. Empty the Debris: Empty the collected debris from the basket. You can use your hands, a garden hose, or a trash can.
6. Rinse the Filter Basket: Thoroughly rinse the filter basket with a garden hose to remove any remaining dirt or fine particles. For stubborn debris, you can use a soft brush. Avoid using harsh chemicals or abrasive cleaners.
7. Inspect for Damage: Check the filter basket for any tears, cracks, or other damage. Replace the basket if necessary.
8. Reinstall the Filter Basket: Carefully reinsert the clean filter basket back into the cleaner, ensuring it is properly secured.
9. Reconnect and Test: Reconnect the cable and power supply. Place the cleaner back in the pool and observe its performance, particularly its wall-climbing ability.

The Importance of Regular Cleaning

Regular filter basket cleaning is essential for maintaining optimal performance for the best pool cleaner and preventing wall-climbing issues.

• Frequency: The frequency of cleaning depends on the amount of debris in your pool. During periods of heavy leaf fall or after storms, you may need to clean the basket daily or even more frequently. Under normal conditions, cleaning it once or twice a week is usually sufficient.
• Benefits: Regular cleaning not only ensures proper wall climbing but also:

Maintains Suction Power: Prevents reduced suction and ensures efficient debris removal from the pool floor.

Extends Cleaner Lifespan: Prevents strain on the motor and other components caused by restricted water flow.

Improves Water Circulation: Promotes better water circulation and distribution of pool chemicals.

Other Potential Causes

While a full filter basket is the most common reason for wall-climbing issues, other potential causes include:

• Worn Brushes or Tracks: Worn brushes or tracks can reduce traction and prevent the cleaner from gripping the walls.
• Damaged Impeller or Motor: A damaged impeller or motor can reduce suction power.
• Air in the System: Air trapped in the cleaner’s system can also affect suction.
• Pool Chemistry Imbalance: In some cases, imbalanced pool chemistry can affect the pool surface and reduce the cleaner’s grip.

However, before investigating these more complex issues, always start by checking and cleaning the filter basket. This simple step often resolves the problem.

Conclusion

If your robotic pool cleaner is skipping the walls and only cleaning the floor, the first thing you should check is the filter basket. Regular cleaning of the filter basket is a simple yet crucial maintenance task that ensures optimal cleaner performance, including its ability to climb walls and clean the waterline. By following the steps outlined in this guide and establishing a regular cleaning routine, you can keep your pool sparkling clean and enjoy the full benefits of your robotic pool cleaner.