Product FAQs

Use a soft, dampened sponge or cloth. Never use abrasive materials such as hard-bristle brushes or scouring pads to clean the fixture surface. Use of any abrasive materials may damage the porcelain glaze.

Use a gentle, non-caustic cleanser. Wipe surfaces clean and rinse completely with water immediately after applying cleanser. Rinse and dry any overspray that lands on nearby surfaces. Do not allow cleaners to soak on surfaces.

Toilet bowl cleaners should be used at least once a week. Use a long-handled brush to clean the rim holes and to clean as far into the trap as possible to prevent mineral deposits from forming. Most toilet bowl cleaners are not harmful to the vitreous china surface of the toilet bowl. Follow the cleaner instructions carefully.

Do not use in-tank cleaners in your toilet. Products containing chlorine can seriously damage fittings in the tank. This can lead to leakage and damage. Use of in-tank cleaners voids the product warranty.

SYMPTOM: Water is running constantly

  • CAUSE #1: Fill valve issue. Clean debris from fill valve head. See HOW DO I CLEAN MY TOILET FILL VALVE? for instructions on how to clean your fill valve.
  • CAUSE #2: Fill tube issue. The fill tube which connects your fill valve to your flush valve may be pushed too far down into the flush valve overflow tube. See the pictures below for proper tube placement.

SYMPTOM: Water is running intermittently (leaking into bowl)

  • CAUSE: Flapper or flush valve issue. Clean the flapper to clear any debris that might be compromising the seal.  Alternatively, re-install the flush valve, and check for any crimping of the flush valve gasket.  If the gasket is crimped, the flush valve may need to be replaced.

SYMPTOM: Tank Lever gets stuck in the down position and causes the toilet to run / doesn’t come back up quickly

  • Check that the tank lever mounting nut is tightened properly.
  • Check that the tank lever rod isn’t catching on the re-fill tube going into the overflow pipe.  If so, re-adjust the position of the re-fill tube, or re-install the flush valve such that the overflow pipe is further up and out of the way.
  • If the above suggestions do not resolve the problem, contact Icera Customer Service department at for further assistance.

SYMPTOM: Poor Flush (newly installed toilet).  If flushing performance is not as expected with a newly installed fixture:

SYMPTOM: Poor Flush (previously installed toilet).  If the toilet has been installed and working fine for some time and is now no longer functioning properly:

  • Usually not an issue with the toilet.
  • Check that the tank lever chain is taut (tight). There should be no slack in the chain.
  • Unclog plumbing lines; have plumber snake down to at least 20 feet with a power snake/auger.
  • Check & unclog the plumbing vents (as above),
  • Check for tree root growths disrupting the home sewer lines (e.g., Roto-Rooter).
  • Increase the tank water level. See HOW DO I ADJUST THE WATER LEVEL IN MY TOILET TANK? for instructions.

If your elongated toilet seat looks too short on your toilet, this is usually a problem with the initial installation. This can be easily resolved by removing and reinstalling the seat properly. Watch the short video below to see how to correctly install your seat.

Watch the short video below to see how to install your round-front toilet seat.


Sometimes sediment build-up can get trapped inside the head of the toilet fill valve which can cause the toilet to run. This can usually be resolved by cleaning the valve. Watch the short video below to see how to clean your fill valve.

If the problem persists after you’ve cleaned the valve, please reach out to our Customer Service department for further assistance.


The water level in your tank should be set appropriately in order to get a complete flush. If too much water is entering the tank, the excess will be discarded via the overflow tube. Over time, this may affect the overall water consumption.

The water level should be at or slightly above the “WL” marking (water line) stamped into the back wall of the tank. If the water level in your tank is not at or near this line, take the following steps to adjust the float level on your fill valve. 

  • Using a Philips head screwdriver, rotate the blue screw at the top of the fill valve float.
  • Rotate clockwise to adjust the float up and rotate counterclockwise to adjust the float down. 


VIDEO CONTENT COMING SOON! Please contact our Customer Service department at for assistance.

VIDEO CONTENT COMING SOON! Please contact our Customer Service department at for assistance.

VIDEO CONTENT COMING SOON! Please contact our Customer Service department at for assistance.


In the meantime, please check out this link for a quick guide on how to install your iWash S-11 bidet seat: Icera iWash S-11 Installation Quick Guide

You can also view the full instruction manual here: iWash S-11 Instruction Manual

Your toilet model number is stamped inside the toilet tank on the back wall. It usually begins with a C-, followed by 4 numerical digits:  C-#### 

For St. Thomas Creations or St. Thomas by Icera branded toilets, the model number will be in the following format:  6###.###

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