TOTO THU767 Auto-Flush Unit Instruction Manual

1. Safety Information

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Always ensure the water supply is turned off and the toilet tank is empty before beginning installation or maintenance to prevent water damage or injury.

2. Product Overview

The TOTO THU767 Auto-Flush Unit is designed to provide automatic flushing for compatible TOTO Washlets. This unit integrates seamlessly with specific Washlet models, offering enhanced convenience and hygiene. It operates by detecting user presence and automatically activating the toilet's flush mechanism.

Key Features:

• Automatic flushing capability.
• Designed for specific TOTO Washlet models (S, S550, S2, S7).
• Easy integration with existing toilet flush valve systems.

3. Package Contents

Verify that all components are present before beginning installation.

• TOTO THU767 Auto-Flush Unit (main motor assembly)
• Remote control flush cover
• Instruction card for remote control
• Attachment clips and chain
• Power cable

Figure 1: Main Auto-Flush Unit assembly.

Figure 2: Small components including attachment clips and chain.

Figure 3: Product packaging displaying model number THU767.

4. Installation

This section provides step-by-step instructions for installing the TOTO THU767 Auto-Flush Unit. Ensure you have all necessary tools and components before starting.

1. Verify Washlet Compatibility: The auto-flush unit is compatible with TOTO Washlet S, S550, S2, and S7 versions. The C version is not compatible.
2. Power Off Washlet: Close the Washlet lid and power off the unit by holding down the power switch on the remote control for a few seconds, or unplug it from the power outlet.
3. Turn Off Water Supply: Locate the water supply valve for the toilet, typically on the wall behind the toilet, and turn it off completely.
4. Empty Toilet Tank: Flush the toilet to drain all water from the tank.
5. Remove Tank Lid: Carefully lift the toilet tank lid using both hands and place it in a safe location to avoid breakage.
6. Install Auto-Flush Mechanism: Place the auto-flush unit onto the overflow tube inside the toilet tank. Ensure it is positioned at an angle that does not interfere with the manual flush lever.
7. Connect Flapper Chain: Attach the chain from the auto-flush unit to the toilet flapper, ensuring there is minimal slack.
8. Route Power Cable: Route the power cable from the auto-flush unit behind the toilet tank.
9. Plug into Washlet: Plug the power cable into the designated port on the Washlet unit. Remove the small cover on the Washlet if present, plug in the cable, and save the cover for future use if needed.
10. Install Remote Flush Cover: Remove the existing flush cover from your Washlet remote control by pressing the two clips and lifting. Replace it with the new flush cover provided with the auto-flush unit, pushing it down until it locks into place.
11. Turn On Washlet: Power on the Washlet by holding down the power switch on the remote control for a few seconds.
12. Test Flush: Before turning the water back on, test the flush function using the remote control to ensure the mechanism operates correctly.
13. Turn On Water Supply: Turn the water supply valve back on and allow the toilet tank to fill.
14. Replace Tank Lid: Carefully place the toilet tank lid back onto the tank.

5. Operation

The TOTO THU767 Auto-Flush Unit works in conjunction with your TOTO Washlet to provide automatic flushing. Once installed and powered on, the system will detect when a user stands up from the toilet and initiate a flush.

Manual Flush Override: The manual flush lever on your toilet will still function independently of the auto-flush unit. Ensure the auto-flush unit is installed in a way that does not obstruct the manual lever's movement.

Remote Control Flush: The remote control for your Washlet will now have a dedicated flush button. Press this button to manually activate a flush at any time.

6. Maintenance

Regular maintenance ensures optimal performance and longevity of your TOTO THU767 Auto-Flush Unit.

• Cleaning: Periodically inspect the auto-flush unit inside the tank for any mineral buildup or debris. Clean with a soft brush and mild, non-abrasive cleaner if necessary.
• Check Connections: Ensure all electrical and mechanical connections (chain to flapper) remain secure.
• Water Quality: Hard water can lead to mineral deposits. Consider using a toilet bowl cleaner designed to prevent buildup.

7. Troubleshooting

If you encounter issues with your TOTO THU767 Auto-Flush Unit, refer to the following common problems and solutions:

• Unit Not Flushing Automatically:
  • Ensure the Washlet is powered on and the auto-flush unit is correctly plugged in.
  • Verify that the remote control flush cover is properly installed and the flush button is functional.
  • Check the flapper chain connection to ensure it has proper tension and is not tangled.
  • Confirm that your Washlet model is compatible with the auto-flush unit.
• Manual Flush Lever Obstructed:
  • Adjust the position of the auto-flush unit inside the tank to ensure it does not interfere with the manual flush lever.
• Water Leakage:
  • Turn off the water supply immediately.
  • Inspect all water connections for tightness.
  • Check the flapper for proper seating and any damage.

For persistent issues, contact TOTO customer support.

8. Specifications

9. Warranty and Support

This product comes with no stated warranty. For technical assistance or further inquiries, please visit the official TOTO website or contact their customer service department.

TOTO Official Website: Visit the TOTO Store on Amazon