Introduction
The Poolmate Hydro 4 SE robotic pool cleaner is designed to provide superior and comprehensive cleaning for both inground and above-ground pools. Featuring a dual-centrifugal pump and continuous AC power supply, it ensures thorough cleaning of your pool's floor, walls, and waterline. Its intelligent navigation algorithms allow for an efficient S-shaped cleaning path, minimizing missed spots. The unit is lightweight, portable, and equipped with a large 4.1L filter basket for effective debris collection.

Image: The Poolmate Hydro 4 SE robotic pool cleaner, a white unit with light blue accents, designed for efficient pool cleaning.
What's in the Box
Upon unboxing your Poolmate Hydro 4 SE, you should find the following components:
- Poolmate Hydro 4 SE Robotic Cleaning Unit
- Power Control Box
- 40FT Power Cable
- Screws (for mounting the power control box)
- Extra O-rings (for cable connection)
- Instruction Manual (Paper Box)

Image: The Poolmate Hydro 4 SE robotic cleaner displayed alongside its power supply unit and coiled power cable, illustrating the main components included in the package.
Setup
Follow these steps to set up your Poolmate Hydro 4 SE for the first time:
- Place the power control box in a dry, shaded area, at least 3 meters (10 feet) away from the pool edge.
- Connect the power cable from the robotic cleaner to the power control box. Ensure a secure connection.
- Plug the power control box into a standard 110-120V AC electrical outlet.
- Carefully lower the Poolmate Hydro 4 SE into the pool. Ensure it sinks to the bottom before proceeding.

Image: The Poolmate Hydro 4 SE robotic cleaner connected to its power supply unit, which is plugged into an outdoor electrical outlet, demonstrating the 'plug and play' setup process.
Operating Modes
The Poolmate Hydro 4 SE offers four distinct cleaning modes to suit your pool's needs:
- Automatic Mode: The robot cleans both the pool floor and walls/waterline. It dedicates approximately 60% of its time to the floor and 40% to walls and waterline, following an S-shaped path.
- Floor Only Mode: The robot focuses solely on cleaning the pool floor in a continuous S-shaped pattern until the set cleaning time ends.
- Walls Only Mode: The robot efficiently cleans walls and the waterline, scrubbing away accumulated dirt.
- Ultra Clean Mode: This mode is designed to tackle stubborn debris with boosted pump power and increased flow rate for a deeper clean.
You can select the desired cleaning mode using the switch on the main unit. The Hydro 4 SE also supports APP selection mode, but note that this connection must be established before the device enters the water, as signals may be blocked underwater.

Image: An aerial view illustrating the Poolmate Hydro 4 SE cleaning the pool floor in an efficient S-shaped pattern, representing the 'Floor Only' mode.

Image: The Poolmate Hydro 4 SE cleaning the pool wall and waterline, demonstrating its ability to scrub away various types of dirt and residues.

Image: A close-up of a hand operating the mode switch on the Poolmate Hydro 4 SE, showing the 'Wall', 'Floor', and 'Auto' settings.
Maintenance
Regular maintenance of your Poolmate Hydro 4 SE is crucial for its longevity and optimal performance. The unit features a large 4.1L dual-zone filter basket that is easy to access and clean.
- After each cleaning cycle, retrieve the robot from the pool. The auto-docking function will guide it to the nearest pool edge for easy retrieval.
- Open the top cover of the robot to access the filter basket.
- Remove the filter basket. It is designed for easy opening from both the top and bottom.
- Empty collected debris (leaves, insects, sand, pebbles, hair, etc.) from the basket.
- Rinse the filter basket thoroughly with a hose to remove fine particles.
- Reinsert the clean filter basket into the robot and close the top cover securely.

Image: The Poolmate Hydro 4 SE's top-load filter basket, with a capacity of 4.1 liters, shown being removed from the unit for easy cleaning.

Image: A sequence showing the easy cleaning process of the Poolmate Hydro 4 SE's dual-zone filter basket, from removal to emptying and rinsing.
Troubleshooting
If you encounter issues with your Poolmate Hydro 4 SE, consider the following:
- Robot not moving or stopping: Ensure the power control box is properly connected and receiving power. Check the cable for any damage or kinks.
- Poor cleaning performance: Clean the filter basket thoroughly. Ensure the suction inlets on the bottom of the unit are not blocked.
- Robot not climbing walls: Verify that the walls-only or auto mode is selected. Ensure the pool water chemistry is balanced, as excessive algae or slick surfaces can hinder climbing.
- Small debris remaining: For extremely small particles that the robot cannot effectively clean, professional pool cleaning methods may be required.
For further assistance, please contact Poolmate customer service directly via Amazon message or through the official Poolmate website.
Specifications
| Feature | Detail |
|---|---|
| Power Source | Corded Electric |
| Item Weight | 14 Pounds (6.5 kg) |
| Hose Length | 40 Feet (12 meters) |
| Special Feature | 4.1L Dual-zone Filter Basket, 150W Dual-Centrifugal Pump Double suction, AC110-120V Input, Customized cleaning via Touch Button, Cleaning Lateral waterline, Ultra clean Mode, Comprehensive Thorough cleaning design, 4 Cleaning Modes, Main Drain crossing design + Auto-Docking function, Super Lightweight & Portable |
| Control Method | Touch |
| Voltage | 110 Volts (AC) |
| Capacity | 4.1 Liters |
| Product Dimensions | 15"L x 9"W x 15"H |
| Material | Plastic |
Warranty & Support
The Poolmate Hydro 4 SE Corded Robotic Pool Vacuum Cleaner comes with a 2-Year Warranty. This includes 30 days of free return and exchange, free replacement, and lifetime online customer service support.
If you need to contact Poolmate customer service, please reach out directly via Amazon message or through the official Poolmate website. Support is available at any time.