eufy Auto Water Refill and Drain System for S1 Pro: Setup Guide
By eufy - Built with Care | Home Security System & Robovacs | Published: 2026-10-16
Category: 사용 방법 가이드
Set up the eufy Auto Water Refill and Drainage System for your S1 Pro Hydrojet in six clear steps. Learn placement, hose routing, leak checks, and the mistakes that cause most install problems.
Quick Answer
Install the eufy Auto Water Refill and Drainage System beside your S1 Pro Hydrojet base, connect the refill and drain lines, then power the module on and test for leaks before running a full clean. The module eliminates manual refills and dirty-tank emptying, so most setup time goes into placing the water source and drain correctly, not into the robot itself.
What the Auto Refill and Drain Module Changes for Your S1 Pro
The eufy Accessory-Auto Water Refill and Drainage System is a dock-side module that connects your S1 Pro Hydrojet to a water supply and a drain point. Instead of topping up the clean-water tank and emptying the dirty-water tank by hand after each run, the module handles both automatically. That matters most if you run the S1 Pro daily or on a schedule, because tank capacity stops being the limit on how often the robot can mop.
The module uses multiple layers of overflow protection to keep the water level controlled and prevent spills. That protection only works as intended when the unit sits level and the drain line has an unobstructed path, which is why placement and hose routing are the parts of this install worth slowing down for.
What You Need Before You Start
Have the module, its supplied hoses and connectors, a water source within reach, and a drain point at or below the module's outlet. Confirm your S1 Pro Hydrojet is already set up and running normally on its own first, so any issue after installation can be traced to the module rather than the robot.
If your S1 Pro is not yet in service, set it up and run one manual clean before adding the module. That gives you a working baseline to compare against.
Installation Steps
- 1. Pick a level spot next to the S1 Pro base: Set the module on a hard, level surface beside the S1 Pro Hydrojet base, close enough that the supplied hoses reach both the robot's water connection and your drain. Leave clearance around the unit so you can see the water level and reach the connections. Checkpoint: press down on the module corners. If it rocks at all, move it. An unlevel module is the most common cause of overflow protection behaving unpredictably.
- 2. Connect the refill line to your water source: Attach the refill hose from the module's inlet to your water supply, and hand-tighten the connector. Route the hose so it does not kink, sit under a chair leg, or run uphill into the module. Mistake to avoid: over-tightening the connector with a tool. Hand-tight plus a quarter turn is enough; forcing it can damage the seal.
- 3. Route the drain line to a drain point: Run the drain hose to a sink, standpipe, or floor drain at or below the module's outlet. Keep the run as short and as straight as you can, and avoid any section where water would have to travel upward. Checkpoint: pour a cup of water into the drain end and confirm it flows away freely. If it pools, the drain line is too high or kinked.
- 4. Power on and let the module fill: Plug in the module and turn it on. Let it run through its initial fill and watch the water level the whole time rather than walking away. Mistake to avoid: leaving the first fill unattended. The initial fill is when a loose connector or a misrouted hose shows itself.
- 5. Check every connection for leaks: Run a dry fingertip along each connector and the underside of the module. Look for drips, a damp ring around fittings, or water beading at the hose ends. If you find a leak, power off, dry the area, and reseat the connection. Checkpoint: no moisture anywhere after ten minutes of running. If it is still damp, do not proceed to a full clean.
- 6. Run one full clean and confirm the tanks stay balanced: Start a normal S1 Pro Hydrojet clean and check the module partway through and again at the end. The clean-water side should be refilling and the dirty-water side draining without you touching either tank. If the dirty tank fills instead of draining, go back to step 3. The drain line is the usual culprit.
Product Facts
- eufy Accessory-Auto Water Refill and Drainage System, Auto-Refill and Drain Module, Compatible S1 Pro Hydrojet: Hands-free convenience: the automatic water refill and drainage system eliminates manual refills and emptying dirty water tanks. Compatible with the eufy S1 Pro. Leak-proof protection uses multiple layers of overflow protection to maintain a controlled water level and prevent spills. This is the core reason to install the module: it removes the two recurring chores of robot mopping. The overflow protection is also the reason the unit must sit level with a clear drain path, since that is what the protection depends on.
