Product FAQ

No. The NEOREST bowl and the top unit are exclusively designed as an integrated system, so the top part cannot be transferred or installed onto a standard toilet bowl, or another NEOREST model.

Yes, NEOREST models feature an advanced "Air Deodorizer" system. When the sensor detects a user entering, it automatically starts deodorizing the space and continues for a set time after use to minimize lingering odors.

TOTO products are designed with longevity in mind, but product lifespan is affected by a variety of factors, including but not limited to: - Environmental conditions, such as water supply, humidity, or temperature - Service and maintenance - Usage For additional information, please consult the "Product Service Life and Extended Use Disclaimer" at https://www.totousa.com/warranty-registration, or speak to a TOTO Technical Service agent 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

TOTO products are designed with longevity in mind, but product lifespan is affected by a variety of factors, including but not limited to: - Environmental conditions, such as water supply, humidity, or temperature - Service and maintenance - Usage For additional information, please consult the "Product Service Life and Extended Use Disclaimer" at https://www.totousa.com/warranty-registration, or speak to a TOTO Technical Service agent 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

High-end WASHLETs like the S7A have many of the same features as a NEOREST, including auto-open/close, instantaneous warm water, and auto-flush capability. The main difference is that a NEOREST is a complete, integrated smart toilet with the bidet features built-in seamlessly, whereas a WASHLET is an electronic bidet seat added to a separate toilet bowl. Warranty periods and service options may also differ.

Yes, absolutely! Whether you purchase a WASHLET from a wholesale showroom or a specific retail model (such as T1SW2491 from Costco), as long as it is a TOTO WASHLET going onto a standard TOTO toilet bowl of the same shape (elongated or round), it is fully compatible and will fit perfectly.

Yes, you can install a WASHLET on an older TOTO toilet even if it does not support auto-flush. You may need a specific connector part (e.g., 9AU321-A) to complete the installation. Contact Technical Support with your toilet and WASHLET model numbers to check compatibility. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Instead of purchasing a fully integrated smart toilet (like the NEOREST), we recommend buying a standard TOTO toilet and pairing it with a WASHLET bidet seat. This gives you features like a heated seat, warm water cleansing, and a night light at a much more affordable price point.

Yes, over time, hard water and mineral deposits can clog internal filters or the WASHLET wand, and cause the WASHLET to lose water pressure. To help prevent this, clean the water filter and wand periodically. If pressure issues persist, the unit may require factory repair.

The standard S7 WASHLET does NOT feature the auto open/close lid function. If you want the auto open/close feature for your wall-hung toilet, you must purchase the S7A model instead.

No. The RP and RX wall-hung WASHLET+ systems are designed for a seamless, concealed look. The electrical connection is hardwired directly behind the toilet into a terminal box, rather than using an exposed exterior wall outlet.

The main advantages are that it does not touch the floor, making floor cleaning exceptionally easy, and it creates a sleek, modern look. Maintenance of the tank components are similar to that of a standard toilet, but the tank is accessed by removing the push button plate on the wall.

No, the S5 WASHLET does not support the auto flush feature. If you want auto flush capabilities, you will need to upgrade to the S7 or S7A WASHLET models, which offer the auto flush feature as an add-on option. You must also have the correct in-wall tank system for autoflush, the WT173MA. In-wall tanks cannot be retrofitted for autoflush.

Specific models of TOTO In-wall tank come with pre-installed auto flush units. In-wall tanks cannot be retrofitted for auto flush after installation.

The YT930 series push plates are made of a durable resin/plastic material, while the YT970 series is made of heavier-duty stainless steel or metal. Both are compatible with TOTO in-wall carrier models WT171M, WT172M, WT173M, WT173MA, WT174M, and WT175MA, but the YT970 provides a more premium metallic finish.

No. Currently, TOTO push plates are not manufactured in gold or brass finishes. Available finishes typically include Cotton White, Matte Black, Stainless Steel, and Brushed/Polished Nickel.

No. Standard toilets in the US market, including TOTO products, have a standardized mounting hole spread of 5.5 inches (approx. 140mm), meaning most standard seats will mount properly.

TOTO products are designed with longevity in mind, but product lifespan is affected by a variety of factors, including but not limited to: - Environmental conditions, such as water supply, humidity, or temperature - Service and maintenance - Usage For additional information, please consult the "Product Service Life and Extended Use Disclaimer" at https://www.totousa.com/warranty-registration, or speak to a TOTO Technical Service agent 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

No. TOTO’s high-efficiency toilets are engineered with advanced flushing technologies (such as Tornado Flush) that deliver equal or superior waste evacuation compared to older toilets (e.g., 3.5 gpf), using far less water. It will not clog more easily under normal use.

Yes, you can typically install a standard WASHLET on older or discontinued TOTO toilets. However, you will need a standard WASHLET, not a ’WASHLET+’ model (which requires a specific toilet design to conceal the cord and hose). Also, features like auto-flush may not be compatible with older toilet models. Contact TOTO Tech Service for details on which models can be installed in the standard installation.

It will fit as long as the mounting hole diameter matches (standard single-hole faucets typically require a 35–38mm hole). If you have a traditional 3-hole layout (4-inch or 8-inch centerset), you can use a matching deck plate (escutcheon) to cover the extra holes and mount a single-hole faucet.

TOTO products are designed with longevity in mind, but product lifespan is affected by a variety of factors, including but not limited to: - Environmental conditions, such as water supply, humidity, or temperature - Service and maintenance - Usage For additional information, please consult the "Product Service Life and Extended Use Disclaimer" at https://www.totousa.com/warranty-registration, or speak to a TOTO Technical Service agent 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Commercial flush valves discharge a large volume of water instantly, so they generally require a high flowing pressure of at least 35 psi (0.24 MPa). Insufficient pressure will lead to poor evacuation and cause toilet paper clogs.

Yes, for public restrooms, TOTO offers a "Multi-Feed Soap Dispenser System." Soap is supplied automatically (or via gravity) from one large centralized tank to each individual dispenser. This requires refilling at only one location, significantly reducing maintenance labor.

The total weight of a NEOREST (ceramic bowl + functional unit) is around 40 to 50 kg (approx. 90-110 lbs), which is similar to or only slightly heavier than a standard toilet. Standard residential floors generally do not require reinforcement.

When properly mounted on its bracket, a WASHLET may have approximately 1/2" of left to right movement, as designed. The WASHLET bumpers may appear to be different heights, and may not sit down on the toilet rim when a user is not seated. This is by design, and allows the seat sensor to be activated by the seated user.

No, TOTO does not offer extension kits if the finished wall material exceeds 2 inches. The wall material must be kept under 2 inches for the carrier to be installed properly.

No, TOTO does not offer extensions or longer inlet pipes for in-wall tank systems. The installation must adhere to the specified wall thickness requirements (typically under 2 inches of finished wall material). The in-wall tank carrier must be placed correctly within the framing to accommodate the standard pipe lengths provided.

D-shaped and Square bowl WASHLET+ models designed to pair with an in-wall tank system do not use a standard wall plug. Instead, the WASHLET has a specific electrical cable adaptor that connects directly into an electrical terminal box installed by an electrician.

Yes. When installing a WASHLET bidet seat on a TOTO in-wall carrier system, you must purchase the THU805 WASHLET Connection Kit separately. This provides the necessary shut-off valve and adaptor for the WASHLET water supply hose. The TOTO in-wall tank has an integrated water line to connect the shut off valve onto.

I understand this can be frustrating, but if the in-wall tank carrier (such as the WT172M) is already completely installed and enclosed behind the wall, you cannot easily add the internal WASHLET connection kit (THU468) without opening the wall for access. As an alternative, you may need a plumber to run a separate external water supply line for the WASHLET.

On some one-piece TOTO models with a skirted design, reaching the fill valve nut from underneath can be challenging. It may require specialized tools like a basin wrench, or temporarily loosening the toilet from the floor to gain better access to the back. We recommend consulting a professional plumber if it is difficult to reach.

Yes, you can install it yourself, provided you have a dedicated grounded electrical outlet near the toilet and can connect the provided junction valve to your water supply line.

You may need to apply penetrating oil and wait, or use a nut-splitting tool. To avoid accidentally cracking the ceramic bowl by applying too much force, please consult a professional plumber if it remains stuck.

In many US jurisdictions, local building codes require caulking the base of the toilet to the floor for sanitation and stability. However, it is common practice to leave a small gap at the very back uncaulked so that any potential under-floor leaks can be detected early. Please check with your local plumbing code.

No refills are necessary. EWATER+ is created automatically by electrolyzing the chloride ions naturally present in your tap water, so you do not need to add any special liquids.

It is not broken. This is the sound of the EWATER+ automatic cleaning feature, which sprays mist into the bowl or onto the nozzle after use (or when idle for a certain period) to suppress dirt and bacteria.

It is used to temporarily power the electronic flush during a power outage. You insert AA alkaline batteries into the box and connect it to the designated port on the main unit. (*Only for specific models - consult model user manual for details).

Over years of use, invisible mineral deposits like limescale or uric acid scale may have adhered to the surface. Carefully scrub it off using a neutral toilet bowl cleaner and a soft brush or sponge designed for non-stick cookware. For heavy build up, vinegar or CLR mineral remover may be used (use only as directed on product packaging).

Some newer models have adjustable sensitivity (see user manual). Generally, the sensor’s detection distance is fixed and cannot be adjusted. Please note, the bathroom layout, direct sunlight from windows, or wall colors might affect the sensor detection.

The "Light Flush" is ideal when removing liquid waste only or during cleaning. Use the "Full" flush when any solids are involved.

The instantaneous heated seat uses a sensor to detect a user and warms up rapidly. If the room temperature is extremely low, or if thick clothing delays detection, it may feel a bit cool for a split second. If preferred, turn the "Preheating" setting to "On".

Occasional minor resistance will not cause immediate damage because a safety mechanism (clutch system) will slip. However, repeatedly forcing the lid can break the motor or gears, so please avoid doing so.

A blinking light indicates that the internal component that generates the sanitized water (electrolytic cell) is nearing its replacement period. If it is completely off, check the remote control to ensure the feature hasn’t been set to "Off". Contact TOTO Tech Service to arrange service of your NEOREST unit.

While it varies by model, most remotes allow you to adjust the volume or "Mute" the operation tone through a hidden menu or system settings. See your user manual for remote settings instructions.

You can turn these features to "Off" using the remote control buttons, power off the NEOREST unit, or press the "Clean Mode" / "Pause" button (on equipped models) to prevent the lid from closing or the toilet from flushing while you are cleaning.

The nightlight settings can be adjusted using your remote control. Please refer to your specific model’s owner’s manual (usually under the ’Settings’ or ’Auto Functions’ section) to find the exact button combination to toggle the nightlight on, off, or set it to a timer.

Yes, you can turn it off by accessing the menu settings on your remote control and switching the "Nightlight" or "Soft Light" setting to "Off". See user manual for specific remote instructions.

Yes, you can adjust the delay time (e.g., 25 seconds, 90 seconds, etc.) for the lid to close after you leave via the remote control’s menu settings. See model user guide for steps.

The nightlight settings can be adjusted using your remote control. Please refer to your specific model’s owner’s manual (usually under the ’Settings’ or ’Auto Functions’ section) to find the exact button combination to toggle the nightlight on, off, or set it to a timer.

No, the washing and seat-warming features cannot be used without electricity.

Do not use the washing features during a water outage. After water service is restored, dirty water or air may enter the pipes. Run water from another faucet first until it is clear before using the WASHLET.

On most models, settings are stored in internal memory even when powered off. However, on some older models or if unplugged for an extended period (several months), settings may revert to the factory defaults. Please check your settings when powering back on.

The autoflush buttons are included as part of the autoflush kit. They are packaged in a plastic bag, stapled to the installation paperwork. To install, pop off the blank section of buttons on your WASHLET remote, and clip the autoflush buttons into place.

Yes, on many models with auto-flush and auto-open/close features, you can change the sequence so the lid closes before the flush activates. This requires pressing a specific sequence of buttons on the back of your remote control. Please refer to your instruction manual or contact Tech Support so we can provide the exact button sequence for your specific model.

The leaf icon represents the Energy Saver feature. When this light is illuminated (orange or green, depending on the model), it indicates that the Energy Saver mode is currently active. You can turn this feature on or off using the side panel or remote control.

Yes, you can turn it off by accessing the menu settings on your remote control and switching the "Nightlight" or "Soft Light" setting to "Off". See user manual for specific remote instructions.

Yes, you can adjust the delay time (e.g., 25 seconds, 90 seconds, etc.) for the lid to close after you leave via the remote control’s menu settings. See model user guide for steps.

For in-wall concealed tank systems, the shut-off valve is located inside the wall tank access opening: 1. Remove the flush push plate (actuator) from the wall to access the inside of the tank. 2. Look inside the opening to locate the small shut-off valve at the top of the tank (often with a blue/red knob) on the water supply line leading to the fill valve. 3. Turn the valve clockwise to shut off the water supply to the tank before performing maintenance.

You can attach one, but the added thickness might prevent the seat from staying fully upright, or the extra weight might cause the soft-close feature to malfunction.

Some seats are designed to sit slightly elevated (about 2-3mm) and only flex downward to rest fully on the bowl when weight is applied. If it touches the bowl when you sit, this is completely normal.

Yes, you can use general training seats. However, depending on the shape, it might scratch the plastic surface of the TOTO seat. Ensure any rubber pads on the child seat are positioned correctly.

It will not damage the toilet. However, if you use the "Small (or Eco) Flush" when flushing toilet paper, there may not be enough water volume, which can cause the paper to clog the drain line. Always use the "Full Flush" when flushing paper and solid waste.

Close the control stop (shut-off valve), unscrew the cap, and remove the piston/filter. Rinse it under water and use a toothbrush to remove any rust or pipe debris trapped in the mesh, then reinstall. Regular cleaning prevents low water pressure issues.

While EFVs are water-resistant, spraying them directly with a hose or pressure washer can force water into the casing, causing the electronic circuit board to short out. Only clean the exterior by wiping it with a damp, tightly wrung cloth.

Always close the control stop completely and press the manual override button to relieve any remaining pressure before removing the top cap. Disassembling the valve while pressurized is dangerous, as water can spray out violently.

Yes. If trapped air or rust in the pipes hits the flush valve directly, it can damage the delicate internal rubber seals or cause clogs. First, open a nearby sink faucet to fully drain out any rusty water and air before operating the flush valve.

Never use abrasive cleansers or metal scouring pads, as they will scratch and ruin the chrome plating. Wipe it down with a soft cloth and warm water mixed with a mild detergent, then dry completely with a clean cloth to preserve its finish.

No. Spraying directly can cause liquid to seep into the gaps, short-circuiting the electronics and causing a malfunction. Please spray the disinfectant onto a cloth first, or use a disinfecting wipe to clean the surface.

No. TOTO EFVs (electronic flush valves) are designed to deliver a precise, fixed volume of water per flush (e.g., 0.125 gpf or 0.5 gpf) depending on the model, and the volume cannot be adjusted. Double-check the model installed on your toilet or urinal. EFVs that begin with product SKUs "TET" are designed for use with toilets, while SKUs that begin with "TEU" are designed for urinals. Incorrect product installation may result in too much or too little water volume for the ceramic product. If the flow is weak, check the internal piston for debris and ensure the control stop is fully open.

While EcoPower hydro-generates electricity from water flow, it contains an internal backup battery (or energy storage cell). If the faucet experiences extremely low usage or has been installed for 7 to 10 years, the backup cell will need replacement due to natural degradation.

The electronic run-time of automated faucets is fixed (10 second on demand, or 20 second continuous). To adjust the actual water pressure/flow rate, manually adjust the control stop (shut-off valve) located under the sink by closing it slightly.

Always use TOTO genuine specified soap. Pouring third-party soap with different viscosities, or adding foam soap into a liquid-type model, can clog the internal pump or prevent proper dispensing, leading to severe equipment failure.

If you notice lingering odors even after cleaning the deodorizing filter, it is time for a replacement of the deodorizer cartridge (charcoal filter). Depending on usage, it typically needs to be replaced every few years.

Consult the user manual for your specific model, and follow instructions in the sections "Long Periods of Disuse" and "Freeze Prevention" (if indicated). Generally speaking, the junction (shut off) valve should be closed, the water pressure discharged from the wand, and the unit powered off. In addition to draining the water from the unit, you should add a cup of water or a commercial evaporation retardant to the toilet bowl. This prevents the water seal from evaporating, which would allow sewer gases to enter the room.

Yes, many NEOREST models feature the "Clean Lift" function. By pressing a button on the side of the unit or using the remote control, the top unit lifts up a few centimeters (automatically or manually) to allow easy cleaning of the gap.

This is caused by airborne mold or bacteria attaching to and multiplying on mineral deposits (iron, calcium, etc.) from the water. Clean regularly with a neutral detergent and ensure the EWATER+ mist feature is enabled.

Consult your user manual for model-specific instructions. Keep the bathroom warm or perform the "Water Draining" procedure according to the manual. For models equipped with a freeze-prevention flow mode (which automatically flushes a tiny amount of water periodically), turn that setting to "On".

Press the "Wand Cleaning" button on the remote control or main side panel (indicated by the symbol of a wand with water droplets). The nozzle will extend without spraying water. Wipe gently with a damp towel. Press the button again or press "Stop" to retract. For remote/side panel instructions specific to your unit, please consult the user manual.

Perform the "Water Draining" procedure on the main unit. Draining water from the supply connections and inside the unit prevents components from cracking due to freezing. Follow the steps in the manual (see model user manual, under Freeze Damage Prevention).

Do not use acidic or corrosive cleaners, thinners, benzine, or abrasive cleaners on WASHLET. These can cause the plastic to crack or discolor, and corrosion to electrical components.

Yes, the toilet lid can be removed without any tools. Depending on the model, you can either gently widen one of the hinges outwards or release a specific lock lever to pull it upward. Clean area with a damp towel. Please refer to your manual as instructions vary by model.

Gently wipe the remote control receiver and sensor windows with a soft, dry cloth. For tougher stains, use a cloth dampened with a diluted neutral detergent, then wipe dry with a clean cloth. Avoid harsh cloths or chemical wipes, as they can cause scratches.

Yes, basic maintenance includes wiping the unit down with a damp towel and neutral cleaner, manually wiping the wand, removing the WASHLET from the mounting bracket to clean underneath, and periodically cleaning the water filter and deodorizer filter located on the unit. If you plan to be away for an extended period, it’s also a good idea to drain the water from the unit using the wand cleaning button to prevent mineral buildup, and then unplug it.

Yes. Power off the WASHLET product and unplug. Find the Main Unit Removal Button on the right hand side of the unit, and press inwards while sliding the unit forward a few inches, to disengage from the mounting plate. Tilt the unit upwards and clean the toilet bowl rim and mounting plate area with a damp cloth. Reinstall the unit by centering the WASHLET on the toilet bowl, and sliding straight back until it clicks securely back into the mounting plate.

The deodorizing filter door on the side of the WASHLET opens similarly to a battery door on a TV remote. Please follow these steps: 1. Locate the middle tab on the filter door. 2. Gently lift up on the middle tab to open it. No special tools are needed. 3. If it is difficult to reach or feels stuck, it may be easier to remove the WASHLET seat from the toilet bowl first to get a better grip.

Since the seat is made of plastic, using chlorine bleach or strongly acidic/alkaline cleaners will cause discoloration or cracking. Please use a neutral toilet cleaner.

Cleaners containing alcohol can degrade the plastic over time, leading to micro-cracks. We recommend wiping with a damp cloth or using neutral, non-alcohol toilet wipes.

These are called "metal marks," which occur when metal cleaning tools, rings, or belt buckles rub hard against the ceramic, leaving metal powder behind. They can be gently rubbed off using a ceramic polishing pad or a commercial mild abrasive cleaner.

For ceramic bowls, TOTO recommends the use of non-corrosive, non-abrasive gel-based toilet cleaners, as well as dish soap or cleaning vinegar. Do not leave chemical cleaners sitting on the ceramic for extended periods as they can damage fittings; rinse thoroughly after cleaning.

Never pour boiling water into a ceramic toilet. Ceramic is highly sensitive to thermal shock. Pouring hot water can cause sudden uneven expansion, causing the bowl to crack instantly or split in half, which is extremely dangerous. Use cold or lukewarm water (below 104°F/40°C).

No. We strongly advise against using bleach, descaling agents, or harsh chemical cleaners inside the WASHLET or toilet tank. These chemicals will damage the internal rubber seals, flappers, valves, and mechanical components. Use a mild soap or vinegar solution for external cleaning only.

During freezing nights, open the faucet slightly to allow a thin, continuous stream of water (about the thickness of a pencil lead) to run. Make sure the lever is set to the mixed (middle) position so that "both hot and cold water" lines flow.

This is limescale caused by dried mineral deposits from the tap water. Spray a diluted citric acid (or vinegar) solution, let it sit for a few minutes, then gently scrub with a soft sponge. Never use harsh scouring pads or abrasive cleaners, as they will scratch the chrome finish.

These are mineral deposits (limescale) from hard water. Wipe them gently with a soft cloth dampened with a neutral cleaner or diluted citric acid. Avoid using strong acidic cleaners or abrasives, as they can peel off the chrome plating.

Although the faucet body and under-counter controller boxes are water-resistant, spraying them directly with a pressure washer or hose can force water past the seals, short-circuiting the electronics. Please use a damp cloth to wipe them down instead.

Empty all the remaining soap from the tank, fill it with warm water (approx. 104°F/40°C), and activate the dispenser several times (using the manual flush switch or sensor). This will flush out and dissolve any soap residue hardened inside the supply tubes.

Because of its tankless (or hybrid) design, your home’s water pressure might be affecting the flush. First, ensure the junction (shut-off) valve is fully open, and test the function using the remote. If flush is still weak, turn the junction valve, and consult the user manual on how to clean the water supply filter to ensure it is not clogged with debris. If issue persists, contact TOTO Technical Service to arrange repair. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

If issue originated after using the manual flush procedure due to electrical outage, or during installation process, ensure the manual water supply cord or knob has been disengaged. If issue began after regular use, debris might be caught in the internal water supply valve, or a component may have degraded. Stop using the toilet immediately, close the junction (shut-off) valve, and contact TOTO Technical Service to arrange repair. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

The batteries are likely dead. Remove the back cover of the remote control and replace all the batteries with new alkaline ones. If issue does not resolve, check inside the battery housing for corrosion or terminal damage. Damaged remotes may require replacement.

- Inspect the remote control for any damage or debris around the button that may prevent it from fully clicking. - Test the autoflush functions by sitting on the seat for 20+ seconds and standing up. - If flush does not trigger, internal components may be damaged and require service. Contact TOTO Technical Service to arrange service. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Yes. Rust can clog the water filter or internal valves, causing the toilet to stop flushing or run continuously. Always run water from another faucet (like the sink) until it is completely clear before allowing water into the NEOREST.

The water supply pressure might be too high, or air may be trapped in the pipes (water hammer effect). Try adjusting the flow by slightly closing the shut-off valve, or have the plumbing inspected.

Simultaneous flashing of all LED indicator lights signals an internal system error or safety lockout: 1. Perform a soft system reset: Unplug the power cord from the wall outlet for 3 minutes, then plug it back in. 2. Verify that the main water shut-off valve is fully open, as a sudden lack of water pressure can trigger error states. If the lights continue to flash after resetting, the unit requires authorized repair. Contact TOTO Tech Support with your model number, serial number, and a short video clip of the flashing lights to initiate service.

First, ensure the unit is powered on, indicated by a solid green Power light on the WASHLET unit. If lights are off, locate the power button on the remote (circle with a vertical line symbol) and press and hold until the unit beeps, and the power light turns on. Check that the batteries in the remote are new. If the remote lights up when buttons are pressed but the toilet does not respond, the remote may have lost connection or the remote receiver may have failed. If there is still no response, contact Tech Support for further troubleshooting and possible repair.

The mechanism that slows down the closing of the seat/lid (soft-close hinge) may be worn out or damaged. The component or the entire seat/lid assembly needs to be replaced. Contact TOTO Technical Service to arrange service. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

First, ensure the unit is powered on, indicated by a solid green Power light on the WASHLET unit. If lights are off, locate the power button on the remote (circle with a vertical line symbol) and press and hold until the unit beeps, and the power light turns on. Check that the batteries in the remote are new. If the remote lights up when buttons are pressed but the toilet does not respond, the remote may have lost connection or the remote receiver may have failed. If there is still no response, contact Tech Support for further troubleshooting and possible repair.

Make sure you are sitting fully on the seat. The bidet spray will not operate if the seat sensor does not detect a user. Some models have a pressure-based sensor in the hinge area, and others have a touch-based sensor near the front of the seat. Ensure the unit is powered on, indicated by a solid green power light.

Check if the temperature setting on the remote control (indicated by the symbol of a water droplet with a thermometer - see model user manual for details) is set to "Off" or "Low". If model has a hot water tank (A or C series), consecutive uses can deplete the hot water tank, causing the water to temporarily become cold until it can reheat. If issue persists, please contact Technical Support to request service. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Check if the deodorizer setting is turned "Off". If the deodorizing air filter is clogged with dust, its effectiveness will decrease. Please clean the filter monthly (see user manual). If odor remains, the deodorizer cartridge (charcoal filter) may need to be replaced.

An energy-saving feature like "Timer Energy Saver" or "Auto Energy Saver" may be active. - This feature lowers the seat temperature during periods of infrequent use. - Turn off the energy saver if preferred.

Make sure the main unit is securely slid onto the base plate until it clicks. If the mounting hardware on the base plate itself is loose, you will need to remove the main unit and retighten the hardware to tighten to the toilet bowl. A 1/2" left to right movement while installed is normal and as designed.

Check if a toilet seat cover or a child’s training seat is covering the seat sensor. It may cause the sensor to incorrectly detect that someone is still sitting. If issue persists, contact TOTO Technical Support for additional assistance. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

For tank-type models, it is normal for excess water to drain from the nozzle area due to thermal expansion when water in the tank heats up. Many models will purge a small amount of water from the wand just before use. The wand self-clean function also rinses the wand before and after use. If it leaks heavily and constantly, close the shut-off valve and contact TOTO Technical Service to request repair. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

First, select the "Stop" button on the side panel controller or remote (indicated by a square symbol.) Water spray may also be stopped by the user raising themselves off the seat sensor briefly. If this does not stop the spray, unplug the power cord from the outlet.

This is normal. The "Premist" feature automatically sprays a mist of water inside the toilet bowl before use to prevent waste from sticking to the ceramic surface.

This is the sound of the automatic self-cleaning feature (EWATER+ or self-cleaning wand) operating, or the heater cycling to keep the seat warm. It is not a malfunction.

The unit may have detected a ground fault (electrical leak) internally, or the plug itself (or the GFCI outlet) could be faulty. For your safety, stop using the unit immediately, close the shut-off valve, and contact TOTO Technical Service for troubleshooting. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Scale or mineral buildup (calcium) might be clogging the nozzle holes. Extend the nozzle manually and gently clean the tip with a toothbrush. If issue persists, contact TOTO Technical Service to arrange service. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Depending on the shape of the training seat, it may constantly block the seat sensor, or conversely, prevent the sensor from detecting a user when someone is seated. Remove the training seat or operate the unit manually. Additionally, children may not be heavy enough to activate a WASHLET seat sensor.

Please follow these troubleshooting steps for new installations: 1. Verify the power cord is securely plugged in and the main Power LED light on the seat is lit. 2. Ensure the main water supply valve is opened completely. 3. Note that WASHLETs feature a built-in seat sensor for safety; water will not spray unless a person is seated. You can test functionality by sitting on the toilet or pressing the seat sensor (rear right side of seat) for A, C, and K series models, or covering the circular sticker with a bare hand for S series models, and then pressing the wash button.

No, never pour vinegar, descaling agents, or chemical solutions directly into the internal water inlet lines of the WASHLET. Doing so will damage internal rubber seals, valves, and solenoids. While a mild vinegar solution can be used externally to wipe the wand exterior, internal backflow check valves cannot be DIY-serviced. If the whistling sound originates from the internal seat mechanics, contact TOTO Tech Support to arrange factory repair service.

A weak spray is usually caused by mineral buildup or a clogged filter. 1. Turn off the water supply 2. Locate the water filter (see WASHLET user manual for model-specific location) 3. Remove the filter and clean it with a small brush and running water. 4. Reinstall the filter and test the spray. If the problem persists, 1. Extend the WASHLET wand using the Wand Cleaning function 2. Unplug the WASHLET to leave the wand extended 3. Clean the wand using a brush and vinegar solution 4. If mineral build up is seen, fill a plastic bag with vinegar and attach to wand using a rubber band. Let soak for 30 minutes and clean with a brush. 5. Connect the WASHLET to power and test the spray If the problem persists, please contact Tech Support for factory repair.

Please verify your settings first: 1. Check the remote control to ensure the Auto Open/Close feature is turned ON. 2. Make sure the sensor on the unit is not blocked or dirty. 3. Note that the Auto Close function operates on a timer after you walk away. If it seems slow, you can adjust the timer settings using the remote control menu. Check your model user guide for remote setting directions.

Yes, this is completely normal. What you are experiencing is the "Pre-Mist" function. When the seat sensor detects someone sitting down, it automatically sprays a fine mist of water onto the bowl surface to help prevent waste from sticking. Some models may also discharge a small amount of water from the wand into the toilet bowl, to discharge the water sitting in the wand while not in use.

First, ensure the WASHLET is powered on, indicated by a solid green power LED on the main unit. Check for environmental factors that might block the remote signal from reaching the receiver on the main unit (see user manual for location), such as shelves, cosmetic bags, tissue boxes, etc. Test remote connectivity by holding in other locations (left vs right side of unit). Dark painted walls may limit the remote range by absorbing, rather than bouncing the remote signal. If issue persists, contact TOTO Technical Support for additional assistance. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

A flashing green power light usually indicates that the WASHLET is not fully locked into the mounting base plate. Press the release button on the right side of the unit, slide the seat slightly forward, and then push it firmly back until you hear a loud click. This ensures the connection is secure and should resolve the flashing light.

A continuous leak directly from the bidet wand nozzle typically indicates an internal valve failure within the WASHLET. This cannot be serviced at home. Please contact TOTO Tech Support to arrange a return repair service to have the internal mechanics replaced.

A flashing green power light indicates that the WASHLET unit is not securely locked into its mounting base plate. Press the release button on the side of the WASHLET, slide the seat slightly forward, and then push it firmly back toward the tank until you hear it click and lock into place. If issue persists, contact TOTO Tech Service for possible repair.

Inspect remote for any damage caused by dropping or submerging in water. Inspect the remote battery area for signs of rust or battery corrosion. Replace old batteries with new ones. If remote does not light up when buttons are selected, it may be damaged and require replacement.

If your remote lights up, and the dryer may be activated, but the wand doesn’t spray, the unit may need a hard reset, due to a safety error. Hard resets require pressing remote buttons in a specific order, which varies by WASHLET model. If the issue persists, contact Tech Support with your model number for further troubleshooting.

If WASHLET is newly installed, verify model number and user guide or spec sheet, to ensure your model has automatic open/close capability. Then, ensure the feature is not accidentally turned off on your remote control (check user manual to change the settings for Auto Open/Close). Also, check if the sensor area on the unit is clean and unobstructed. If issue persists, contact TOTO Tech Service for further troubleshooting.

If the wand extends but does not spray, first check if the water supply valve on the wall is fully open. Then, ensure the mesh water filter on the side of the WASHLET is clean and not clogged with debris.

Remote issues may be best troubleshot by a TOTO Technical Support agent, to determine if the unit requires a reset or service. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

If the wand is stuck, grinding, and spraying improperly right out of the box, it was likely damaged during shipping. Please return the unit to your retailer for a replacement.

If your WASHLET remote does not light up at all, first replace the batteries in the remote, and inspect the battery box for any damage or corrosion. Then, ensure the WASHLET main unit is plugged in and has power. Check the Power LED light on the main unit. If it is not showing solid green, find the power button on the remote, and press and hold for 5-10 seconds, listening for a beep and watching for the power light to turn on.

The mechanism that slows down the closing of the seat/lid (soft-close hinge) may be worn out or damaged. The component or the entire seat/lid assembly needs to be replaced. Contact TOTO Technical Service to arrange service. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

If the push plate on your in-wall system is sticking: 1. Carefully unclip and remove the push plate cover from the wall. 2. Inspect the actuator rods behind the plate to ensure they are properly aligned, not bent, and set to the correct length. 3. Check for any dust or debris buildup around the buttons. 4. Ensure the push button mounting frame is not over-tightened against the wall, which can bind the buttons. If the issue persists, contact TOTO Tech Support for internal flush valve maintenance guidance.

A loose wall-hung bowl may be caused by several factors: 1. The mounting hardware securing the ceramic bowl to the in-wall carrier frame needs tightening - Locate the mounting access holes on the side or underside of the ceramic bowl. - Insert the appropriate size Allen wrench or socket tool into the access holes to tighten the mounting bolts. - Tighten securely so the bowl rests firmly flush against the wall 2. The metal rods or mounting hardware may have been incorrectly adjusted before bowl installation. Remove bowl and check installation guide for exact measurements 3. Incorrect wall framing or in-wall carrier installation may result in wall movement or flexing when the weight of a user is on the bowl. If issue persists, contact TOTO Technical Support for further troubleshooting. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

A continuously running in-wall toilet is usually caused by a dirty/worn flush valve seal or a stuck fill valve: 1. Remove the push plate to access the internal components. 2. Turn off the internal water shut-off valve. 3. Remove the central flush valve assembly and inspect the rubber seal at the bottom for debris, mineral buildup, or warping. 4. Clean the seal and valve seat thoroughly. If the rubber seal is deformed or blistered, replace the flush valve seal gasket. For further assistance, contact TOTO Technical Support for troubleshooting.

For in-wall tanks, the access panel is located directly behind the push plate on the wall. Carefully remove the push plate cover to access the internal tank components, such as the fill valve and flush valve, for maintenance or replacement. For further assistance, contact TOTO Technical Support for assistance.

First, remove the push plate to access the internal tank. Turn off the water supply valve located inside the wall. If the water stops trickling into the bowl within a few seconds, the fill valve is likely overfilling the tank and needs to be replaced. If the water continues to leak into the bowl while the supply is off, the flush valve seal is likely the issue. For further assistance, contact TOTO Technical Support for assistance. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

If your flush mechanism is sticking and keeping the tank running, the push rods behind the push plate may need adjustment or replacement. First, remove the push plate and ensure the flush rods are properly seated and not bound. If they seem to be rubbing or stuck, ensure they are clicked into place by twisting clockwise, until a click is heard. Contact TOTO Tech Service for further troubleshooting.

If the push button on your in-wall toilet faceplate is sticking, the push rods behind the plate may need adjustment. Check the rods that connect the button to the internal mechanism. If they are uneven, it can cause the button to bind or stick. Adjust the rods so they are completely flush and even.

The mounting bolts or nuts securing the seat to the bowl (underneath or on top) may be loose. Please refer to the manual and firmly retighten the nuts. You may also want to inspect the seat mounting holes for damage to the attachment area.

The soft-close components that control the slow-closing action have likely reached the end of their lifespan. The soft close hinge, or the entire seat assembly, must be replaced.

No, plastic seats with cracks should not be repaired. Please stop using it immediately and replace the seat for safety. If the seat is part of a WASHLET or NEOREST product, please call into TOTO Technical Service to arrange service for your unit. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

The chain or cable connecting the trip lever to the flush valve inside the tank might be disconnected or broken. Open the tank lid and check the condition of the chain.

The fill valve or diaphragm that controls the water level inside the tank may have degraded over time. Some TOTO fill valves may be serviced to replace the inner diaphragm to prevent operational sounds. - See video on TOTO USA YouTube here: https://youtu.be/8k7OyAtLj3U?si=LBDfrxLC3N5fAC8a If sound is continuous/persistent, perform a "Leak Test" to determine if a tank component like the flush valve or fill valve requires replacement.

This is condensation, which occurs when the bathroom is hot and humid while the water inside the tank is very cold. It is not a malfunction, but to prevent future issues, wipe it off regularly or improve room ventilation/dehumidification.

Solid objects get caught in the trapway and cause severe clogs. Do not use a plunger, as it will push the object further in. Contact a professional plumber immediately to retrieve it.

Seepage or moisture under the bowl may be caused by a poor seal between the toilet and the drain flange. - Remove the toilet from the floor. - Inspect the drain flange. For proper seal, the flange should sit higher than the finished floor. If it is recessed below floor level, consult a plumber about raising it higher with a drain flange extender. - Install a new wax ring. TOTO recommends the use of a plain wax toilet ring, without inner plastic ring, for best seal. - Inspect the toilet for any visible damage or cracks. - Reinstall toilet onto flange, ensuring unit is bolted firmly and sits evenly on the floor.

Look closely at the water surface in the bowl to see if there are any ripples. Also, put a few drops of food coloring into the tank. Wait a while without flushing; if color appears in the bowl water, water is leaking from the tank.

The lever shaft might be rusted/corroded, or the internal lift chain or flapper might be catching on another component. Inspect the inside of the tank to clear any obstructions, or lubricate (or replace) the trip lever.

Yes, if you can identify the tank model number (usually stamped or engraved on the inside back or side of the tank), you can purchase just the lid as a replacement part. For safety, remove the cracked lid immediately.

If the issue occurs soon after installation, inspect the tank to bowl mounting hardware and washers, and compare to the installation instructions for your model. Leakage may occur from mounting holes if the rubber and metal washers are not installed in the correct order to create a tight seal within the toilet tank. Likewise, the tank to bowl gasket (foam or rubber) may have been incorrectly installed or pinched during installation. To find location of leakage: - Turn off the water, and uninstall the tank from the bowl. Prop upright, and fill the tank with water to check for leaks. A few drops of food dye may help to identify the area of leakage. - Check for any indication of cracks in the tank, which can be caused by overtightening of the hardware. - It is possible for the rubber washers and foam gaskets to degrade over time, due to age or exposure to chemicals in the tank. They may need to be replaced.

The nuts on the bolts securing the toilet to the floor (closet bolts) may be loose, or the floor might not be level. Tighten the nuts gently, insert plastic toilet shims into the gaps to eliminate the wobble, and secure the base with caulk.

This is a sign that your drain line or the house vent pipe (vent stack) is starting to clog. Because air cannot escape smoothly during a flush, air is sucked through the toilet bowl trap, making a noise.

This indicates a partial clog in the trapway or drain pipe. Use a plunger immediately to clear the obstruction, or consult a plumber to address any clogs in the building plumbing system.

This may be caused by a degraded washer inside the connection, a loose nut, or a cross threaded hose connection. First, close the shut-off valve and slightly tighten the nut with a wrench. If the leak persists, we recommend replacing the entire supply line (as most have integrated washers).

These could be "crazing," which are tiny fractures only in the surface glaze caused by thermal expansion differences, or actual "cracks" in the ceramic structural body. If the lines run all the way to the backside or if water is seeping through, it is a structural crack and requires immediate replacement.

This is "hydrolysis," a condition where rubber components break down and dissolve over time after long-term submersion in water. While not abnormal, it means the part has reached the end of its lifespan and should be replaced with a new flapper before leaks occur.

You can perform a simple "Leak Test" to isolate the issue: 1. Flush the toilet normally and let the tank fill completely. 2. Shut off the water supply valve behind the toilet. 3. Make a pencil mark at the water level inside the tank. 4. Wait 2 to 4 hours without using the toilet. 5. Check the water level. If the water has dropped to the level of the flapper or flush tower, the flush valve/flapper is leaking and needs replacement. If the water level remains the same but runs when the water is turned back on, the fill valve needs replacement.

This sound is known as ’water hammer.’ It occurs when the toilet’s fill valve shuts off abruptly against high household water pressure. To resolve this, you can try slightly closing the water supply valve to reduce the flow rate, or consult a plumber to install a water hammer arrestor on your plumbing line.

You can perform a simple test to determine if the issue is with the flush valve (flapper) or the fill valve: 1. Flush the toilet and let it refill to its normal level. 2. Mark the water level inside the tank. 3. Turn off the water supply valve and wait 4 to 6 hours. 4. Check the water level. If it has dropped significantly, the flush valve (flapper) likely needs to be replaced. If the water level has barely moved, the fill valve may be the issue.

This is usually caused by a worn, degraded, or debris-clogged valve cartridge. Please replace the valve cartridge with a new one. Be sure to close the shut-off valves before starting the work.

The O-rings on the cartridge may have degraded, or the cartridge retaining nut might be loose. Tighten the nut or replace the cartridge (or the O-rings).

The lubricating grease inside the cartridge has worn away, or debris is caught inside. Replace the valve cartridge as soon as possible.

This is caused by a loose nut or a degraded internal gasket/washer. Close the shut-off valve first, then use a wrench to snug up the nut. If the leak continues, replace the flexible supply hose line.

Your water heater’s temperature setting might be too low, the internal thermostatic cartridge may be faulty, or the hot/cold water pressures might be unbalanced. Try raising the water heater temperature slightly above the faucet’s desired output. If issue persists, contact TOTO Technical Service for additional troubleshooting. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

This is a "water hammer" effect caused by abrupt changes in water velocity. Try operating the lever more slowly, or slightly close the shut-off valves under the sink to regulate the flow rate (faucet). If issue persists, install a water hammer arrestor.

Continuously running flush valves may be caused by several factors. After turning off the water shut off valve, check the following: - Is the manual push button stuck in the pressed in position, and cannot pop back out? (Exposed flush valves only) If so, remove the lower cover and unstick or replace the part - Remove the valve cap (brass or plastic) and remove the piston assembly. Inspect the piston and the inside of the valve for debris or damage - Remove the metal portion of the solenoid from the plastic base. Inspect the plunger on the underside of the metal portion, ensuring it is not wedged or stuck. Replace if plunger does not slide smoothly

Inspect the sensor window for build up or damage. Gently wipe the sensor window with a soft cloth. Check the installation height of the sensor window against the installation manual. Recalibrate the flush valve sensor by using the following steps: - Unplug the sensor and back up battery wire harnesses - Wait 5-7 minutes - Plug the wire harnesses back in to begin calibration. Ensure your hand or body are not covering the sensor window. Place the valve cover (exposed valves) or wall plate (concealed valves) back into place without adding security screws. - Exit the area and allow the sensor to calibrate for 5-7 minutes. During this time, a red light will blink once every 4 seconds - When the light stops blinking, calibration is complete - Test function as normal by standing in front of the sensor for longer than 20 seconds, and then exiting the area (dark clothing that absorbs light can sometimes make it harder for the sensor to detect a user) If issue persists, contact TOTO Technical Service for additional assistance. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

The sensor might be detecting reflections from mirrors or stainless steel opposite the urinal, or direct sunlight might be hitting the sensor. Alternatively, it could be the "Maintenance Flush" feature, which automatically flushes every 24 hours (toilets) or once every 12 hours (urinals) of non-use to prevent the trap from drying out and maintain the charge from the EcoPower generator.

Continuously running flush valves may be caused by several factors. After turning off the water shut off valve, check the following: - Is the manual push button stuck in the pressed in position, and cannot pop back out? (Exposed flush valves only) If so, remove the lower cover and unstick or replace the part - Remove the valve cap (brass or plastic) and remove the piston assembly. Inspect the piston and the inside of the valve for debris or damage - Remove the metal portion of the solenoid from the plastic base. Inspect the plunger on the underside of the metal portion, ensuring it is not wedged or stuck. Replace if plunger does not slide smoothly

EcoPower valves are self-generating using the flow of water, but they do contain a backup battery cell. If the urinal experiences very low usage for extended periods, or if the battery reaches the end of its lifespan (approx. 7-10 years), the backup battery will need to be replaced.

This indicates a circuit board error, a failed sensor, or a completely dead battery. Try resetting the unit by disconnecting the power (or battery) briefly. If it continues, follow the manual to replace the faulty component (e.g., sensor unit).

Check if the sensor window is dirty and wipe it with a soft cloth. Additionally, if a user stands in front of the toilet for too short a time (only a few seconds), the system will not recognize it as a valid use and will not automatically flush. Installation error or maintenance may lead to a poorly-calibrated sensor. Follow the steps below to recalibrate the sensor distance: - Unplug the sensor and back up battery wire harnesses - Wait 5-7 minutes - Plug the wire harnesses back in to begin calibration. Ensure your hand or body are not covering the sensor window. Place the valve cover (exposed valves) or wall plate (concealed valves) back into place without adding security screws. - Exit the area and allow the sensor to calibrate for 5-7 minutes. During this time, a red light will blink once every 4 seconds - When the light stops blinking, calibration is complete - Test function as normal by standing in front of the sensor for longer than 20 seconds, and then exiting the area (dark clothing that absorbs light can sometimes make it harder for the sensor to detect a user) If issue persists, contact TOTO Technical Service for additional assistance. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Remove the cap from the "Control Stop" (shut-off valve) located next to the valve body, use a flathead screwdriver to turn it clockwise until it stops to completely shut off the water supply (exposed valves). For concealed EFVs (inside the wall), remove the sensor plate and find the valve handle to turn off. Then, inspect and replace the internal parts. If issue persists, contact TOTO Technical Service for additional assistance.

- Ensure that the water supply to the valve is opened fully. - The internal mechanism of the button may be worn out, or the piston/diaphragm inside the valve body might be stuck. - Shut the control stop, disassemble the valve, and inspect the push button and internal components. If issue persists, contact TOTO Technical Service for additional assistance. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

The rubber gaskets inside the vacuum breaker (a safety valve that prevents backflow of sewer water) may have degraded over time. Since leaking water here can ruin floors, replace it immediately with a vacuum breaker repair kit.

This is a "water hammer" effect, caused by the high-velocity water flow stopping abruptly, creating high pressure in the pipes. Slightly close the control stop to reduce the flow rate, or install a water hammer arrestor in the piping.

This indicates that the backup battery voltage is low. Although EcoPower self-generates electricity from water flow, the backup battery will need replacement if the toilet hasn’t been used for a long time or after several years (approx. 7–10 years) of service.

No. EFVs have a fixed flush volume per model (e.g., 1.28 gpf or 1.6 gpf) and cannot be adjusted electronically. If the volume decreases, check how far the control stop is open, and clean any rust or debris from the internal water supply filter/piston.

The sensor may be falsely detecting reflections from a stall door, clothes hanging on a hook directly opposite, or a mirror. Adjust the sensor’s detection range (sensitivity) to a shorter distance using the remote control or settings switch. Alternatively, it could be the "Maintenance Flush" feature, which automatically flushes every 24 hours (toilets) or once every 12 hours (urinals) of non-use to prevent the trap from drying out and maintain the charge from the EcoPower generator.

It is highly likely not a scratch, but a "weld line" formed during the plastic molding process. It does not affect the sensor’s detection or water resistance. However, if you experience actual operational issues, please contact our support team.

Please try the following troubleshooting steps: 1. Check the water pressure: Ensure the water pressure coming into the flush valve is not too high, which can force the solenoid open. 2. Inspect the solenoid: The solenoid might be stuck in the open position. Carefully open it and gently reset the internal components.

There may be a water leak from the faucet supply lines or the soap dispenser connection joints. Because of the risk of electrical shock or short circuits, immediately close the main shut-off valves, unplug the power cord, and then inspect the gaskets and hoses.

Ensure the control stop (water shut off valve) is fully open. The sensor window might be dirty or clouded with hard water stains. Wipe the sensor window with a soft cloth. Also, ensure that the electrical wiring connectors inside the under-counter control box are securely connected. Mistakes during installation or maintenance can lead to incorrect sensor range. To recalibrate the sensor, follow the steps below: - Unplug the sensor wire and back up battery wire harnesses from the controller - Wait 5-7 minutes - Ensure the sensor is clean, and there is nothing inside the sink area - Plug in both wire harnesses to initiate the sensor calibration. A red light will blink in the sensor window every 4 seconds - Leave the area undisturbed for 5-7 minutes, or until the light stops blinking - Test the function normally, by placing for hands naturally in the sink for a few seconds (do not wear black gloves during testing, as sensor may not register) If water flow does not trigger, contact TOTO Technical Service for further troubleshooting. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

Locate the control stop (shut-off valve) underneath the sink and turn off the water completely. Remove the metal portion of the solenoid from the plastic base. Check the plunger located on the underside of the metal portion. Ensure it is not stuck, wedged, or damaged. Afterward, clean or replace the solenoid valve.

Wipe any grime off the sensor window. Also, check if the liquid soap tank is empty, or verify the power source of the under-counter control box (ensure the AC plug hasn’t been pulled or check for dead batteries).

Soap may have dried and hardened inside the nozzle valve, or foreign matter may be trapped. Wrap the nozzle tip with a cloth soaked in warm water (approx. 104°F/40°C) to dissolve the hardened soap. If it continues to leak, the internal check valve needs replacement.

Uric acid scale (calcium deposits from urine) has likely built up inside the urinal’s internal trap. You can use a commercial urinal descaler, or remove the ceramic strainer to brush and clean out the trapway directly.

If usage is low, the water seal inside the trap may have evaporated, allowing sewer gases to escape. Alternatively, uric acid scale may be clinging under the rim or strainer. Flush manually to restore the water seal and clean thoroughly with an acidic bowl cleaner.

No. Using a urinal with a broken strainer will allow debris like gum, trash, or cigarette butts to fall into the trapway, causing clogs that may require removing the entire urinal from the wall. Replace the strainer immediately.

The gasket sealing the connection between the urinal and the drain pipe (flange) has likely failed. The urinal must be removed from the wall to replace the gasket.

If it is near the surface, you might be able to retrieve it with tweezers. If it has fallen deep into the internal trap, do not use a plunger, as this will push it tighter. A professional plumber will need to dismount the urinal from the wall to extract the object.

We understand it can be challenging to find parts for discontinued models. For in-wall (concealed) flush valves (EFVs), original parts may have been replaced with revised part numbers. Please contact TOTO Tech Support with the original part number or your EFV model number (often on a sticker on the rear side of the wall plate), and our technicians will identify the correct compatible replacement part.

If you have the WT174 in-wall tank, any flush plate from our YT9 series is compatible. For a white finish, we recommend the YT930 or YT920 models as suitable replacements.

Installation of an angle stop and TOTO adaptor are required to connect a WASHLET to your TOTO in-wall tank. THU807 is the correct part for installation with the WT172M carrier, while THU805 is the correct part for the WT173M carrier.

No, the installation hardware in "Bag 2" is not sold as a single combined kit. Each part (flange, inlet, nuts, washers, studs, caps) has a separate part number. Please check the parts breakdown for your specific in-wall carrier model to order the specific parts you need.

NEOREST and WASHLET seats have integrated heating elements and wiring, so they need to be replaced by a certified TOTO repair technician. Contact TOTO Tech Service to assist with service options.

For many of our standard 2-piece toilets (including models like ST743S, ST753, and ST784S), you can use our universal 3-inch flapper. The correct replacement part number is THU500S.

If a specific internal part (like an older brass piston assembly) is discontinued, it often means the entire internal valve assembly needs to be updated or replaced with a newer version. Please contact Tech Support with your toilet’s model number, and we will provide the superseding part number or the current replacement kit.

Yes, in most cases, TOTO updates part numbers slightly over time (often by changing a letter at the end, such as from ‘A’ to ‘B’ or ‘R’) to indicate a newer manufacturing version or an updated material. As long as the base number is the same and Tech Support or an authorized distributor provided it, it is a direct replacement and will fit.

TOTO Tech Support does not sell parts directly to consumers. However, you can easily purchase authorized TOTO replacement parts through our network of local distributors, plumbing supply stores, or online retailers (such as Amazon).

Using the seat without bumpers can cause the plastic seat to crack under your weight. Please purchase replacement bumpers as spare parts and install them.

For standard TOTO Soft-Close toilet seats, breakage requires complete replacement. For WASHLET and NEOREST products, it is possible to replace only the lid on certain models, while damage to the seat hinge and seat itself require repair by a certified technician.

The toilet tank model number is located either on a sticker, or stamped in black ink on the inside back wall of the toilet tank. It usually starts with "ST" or "CST" followed by a 3-digit number and letters (e.g., ST454E or CST744). Please do not use the numbers found underneath the tank lid, as those only correspond to the lid itself.

I understand how difficult it can be when the ink stamp fades. If you cannot read the "ST" or "CST" model number inside the tank, please take two clear photos: 1. One from the front of the toilet with the lid down. 2. One side profile showing the entire toilet. Email these photos to our Tech Support team, and we will gladly help identify your specific toilet model and the parts you need!

The mounting screw for the remote control is included in the original packaging, typically inside a small plastic bag along with the Installation Manual or the remote itself. Please check the box thoroughly. Note that this screw is not sold as a separate replacement part. If you cannot locate it, you can take the remote base plate to a local hardware store to find a matching screw. This screw is not essential to keeping the remote on the bracket, but does prevent the remote from being removed from the wall hanger.

Our TOTO Tech Support team is available to assist you Monday through Friday, from 8:00 A.M. to 8:00 P.M. Eastern Standard Time. You can reach us by phone, live chat, or email during these hours.

TOTO provides a 1-year service warranty on paid out-of-warranty repairs. This warranty begins on the date you pay your repair invoice. If you experience the same issue within that year, please contact Tech Support with your previous case number.

The model and serial number are usually printed on a white sticker located on the back of the WASHLET unit, near where it meets the toilet tank. It may be on the left side, right side, or occasionally on the very back edge. Units also ship with a model sticker on the underside of the lid, but this sticker is sometimes removed during installation. Model numbers will begin with "SW" or "TCF." Please locate this sticker before calling for the fastest support.

To initiate a warranty claim, you simply need your proof of purchase (receipt). You can register your product and start a claim on the TOTO website. Most WASHLET warranties (like the 2-year warranty for the S7A) cover the cost of replacement parts or repairs, but do not cover labor costs.

If your WASHLET needs to be sent to a TOTO repair facility and you no longer have the original packaging, Tech Support can send you a shipping box and a prepaid FedEx return label. Once you receive the box, simply pack the unit (you can keep your remote control) and drop it off at FedEx.

TOTO does not typically send field technicians for in-home WASHLET repairs. Instead, we offer a convenient mail-in repair service. Please contact Tech Support, and we can send you a specially designed shipping box and a prepaid FedEx return label. Removing the WASHLET is very simple, and we will provide step-by-step instructions so you can easily ship it to our repair facility.

If our WASHLET Repair Team evaluates your unit and determines that it cannot be safely or effectively repaired, the standard service or evaluation fee is typically waived. In that case, you have the option to have the unrepaired unit shipped back to you or safely disposed of at our facility.

To send your WASHLET in for factory repair, please follow these steps: 1. Contact TOTO Technical Support to create a ticket and provide a photo of your WASHLET’s serial number. 2. TOTO will email you a FedEx shipping label and instructions. 3. Ship the unit via FedEx. The repair typically takes about 3 to 5 business days once received at our facility. 4. Once the repair is complete, we will email you an invoice with a secure payment link. (Some repairs covered under warranty) 5. After payment is received, your WASHLET will be shipped back to you. 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support

TOTO offers factory repair of most WASHLET models, for a flat rate based on model number and manufacturing date. This fee covers all parts, labor, shipping, and includes a shipping box with a prepaid label. Once repaired, the unit comes with a 1-year warranty.

Once received at the factory, most WASHLETs will be repaired within 3-5 business days. To check on the status of your repair, you may reply to the initial case email thread, or contact Technical Support for a status update by phone, or emailing techsupport@toto.com 📞 Phone: Call (888) 295-8134, Option 4 (Toll-Free), Hours: Mon–Fri, 8:00 AM – 8:00 PM EST 🌐 Online Request (24/7): https://www.totousa.com/toto-customer-support