Sloan Flushmate Troubleshooting Guide (5 Issues Solved!)

You can depend on a Sloan flushmate system for water efficiency and dependable single-flush performance on your pressure-assist toilet. However, make sure you are prepared in case issues arise. For this reason, Sloan flushmate troubleshooting is essential.

You will need to troubleshoot common Sloan flushmate-related issues. These include the toilet not flushing or filling with water, the sensor not working, and leaking. Getting to the bottom of these issues will help you fix the problems in your toilet.

This post offers a step-by-step guide to troubleshooting a Sloan flushmate system and fixing different problems. You will also learn how to adjust a Sloan flushmate actuator

What is a Sloan flushmate

Sloan Flushmate Troubleshooting (Quick Fix)

The table gives an overview of possible Sloan Flushmate problems that could crop up and how to deal with them.

 ProblemPossible CauseRecommended Fix
1.LeakingLoose bolts Improper installation of the gasket, Problems with the drain connection under the toilet bowl  Tighten the bolts, Install the gasket correctly, Check the drain connection under the bowl
2.Sloan Flushmate not flushingClogging in the inlet screen, Low air pressure, Broken toilet handle, Drain line problems, Misaligned flush valve cartridgeRemove the clog on the inlet screen, Repair the broken handle, Use an auger to correct drain line problems, Install the flush valve cartridge correctly
3.Flushmate sensor not workingLow battery, Sensor not installed properly, Shiny doors and locks, High trafficReplace the low battery, Minimize items and activities that drain the batteries.  
4.Toilet not filling with waterLow water pressure, Issues with the rod clearanceContact a certified plumber.

1. Sloan Flushmate Leaking Water In Tank

Sloan Flushmate (View on Amazon) toilets experience leak problems between the toilet bowl and the tank. They stem from improper installation of the gasket and loose bolts connected to the tank using washers, rubber seals, and nuts.

In addition, the drain connection under your toilet bowl and a loose water supply shank are potential causes of leaking. If the problems remain unattended for a while, they’ll cause leaks in other parts of the toilet.


  • Tighten the bolts.
  • Place the tank-to-bowl gasket properly to minimize the chances of leaking.
  • Tighten the locknut on the water supply shank.
  • Check whether you have a sewer gas odor around the drain connection.
  • Replace the seal between the toilet drain and the bowl.
  • If the solutions above fail, consider hiring a certified plumber to bail you out.

2. Sloan Flushmate Making Loud Noise

Sloan Flushmates are pressure-assisted toilets that use extra force to flush the waste down the drain. They compress air, which results in loud whooshing sounds when flushed.

If you are a homeowner who values peace of mind and hates noise, you’ll have to rethink buying and installing this toilet. The good news is you can cure the Sloan Flushmate making loud noise problem.


  • Start by removing the ceramic tank cover from your toilet’s rear tank.
  • Fill a gallon jug to the brim with water.
  • Next, pour water into the black plastic Flushmate container and allow it to flow down the sides and into the base of the ceramic tank.
  • Flush the Sloan toilet and check whether the loud noise is gone.

3. Sloan Flushmate Not Flushing

The last thing you want after relieving yourself is to find out your Sloan Flushmate toilet not flushing. The waste lingering in the toilet bowl makes the fixture unsightly, and you won’t want guests walking into your restroom.

The Flushmate not flushing can arise from clogging in the inlet screen, low air pressure, or a broken toilet handle. You also need to look out for problems in the drain line and misalignment of the flush valve cartridge because they can hinder your toilet from flushing.

Furthermore, some homeowners have reported faulty air draws and leaks in the vacuum breakers as sources of their toilet miseries regarding flushing.


  • Get rid of the object blocking the inlet screen.
  • Troubleshoot the air valve and the actuator to adjust the air pressure.
  • Repair the broken handle.
  • Clear the blockage in the drain line using an auger.
  • Adjust the flush valve cartridge and air inducer correctly.
Why does my Sloan FLUSHMATE keeps running?

4. Sloan Flushmate Sensor Not Working

Sloan Flushmate toilets come with automatic flushing systems with battery-run Retrofit kits. These features make Sloan toilets stay ahead of the competition because they make the units touch-free.

However, problems could plague the touch-free sensors, seeing that they employ batteries to activate the touch-free mechanism. Some individuals might tell you to brace yourself to replace Sloan Flushmate batteries every two weeks. It is because the batteries drain fast, and you can attribute this to some reasons.

Improper sensor installation, shiny doors, and locks are some areas to check when trying to diagnose the cause of low batteries. Sloan Flushmates batteries are also incredibly sensitive to high-traffic areas, lighting that could trigger the mechanism, and a long sensor range distance.

These pose considerable danger to the batteries because of their power-draining capabilities and will eventually render your Flushmate sensor useless.


Contact a professional from Sloan Flushmate to troubleshoot the problem.

5. Sloan Flushmate Not Filling With Water

Having established that Sloan Flushmates rely on pressure to guarantee top performance, anything that interferes with the pressure will lower its functionality. One issue that could arise because of this is the Sloan Flushmate not building pressure.

Failure of the tank to fill with water stems from the low water pressure in the water supply line, clogging in the inlet filter, and problems with the rod clearance.


  • Cut off the water supply.
  • Flush the Sloan toilet to relieve air and water pressure from the system.
  • Unscrew the locknut holding the supply shank.
  • Separate the flush rod from the flush-handle linkage.
  • Remove the screws holding the flush rod to the Flushmate, then use those screws to secure the flush rod to the replacement Flushmate.
  • Unscrew the nuts holding the bolts that protrude from the toilet’s base.
  • Lift the tank from the bowl and drain the residual water that accumulated in the tank into the bowl.
  • Place the tank aside carefully on its backside.
  • Take the tank-to-bowl gasket off the discharge extension.
  • Use a spanner wrench to unscrew the locknut at the base of the tank.
  • Slip the Flushmate system out of the Sloan toilet tank.
  • Get the replacement gasket for the Flushmate. Ensure the ribs face downward.
  • Place the supply shank in the tank, followed by the Flushmate system.
  • Screw the locknuts on the threads at the bottom of the toilet tank.
  • Rejoin the tank to the bowl by positioning the gasket over the protruding discharge extension.
  • Tighten each bolt tightly with hex nuts and brass washers.
  • Use the alternate approach to tighten the tank by pressing the bowl nuts downwards on each side to prevent leakage. Also, avoid over-tightening the nuts because excess pressure breaks them.
  • Reconnect the water supply line to the shank and restore the water supply to the Sloan tank.
  • Allow the tank to refill and flush to see if you’ve solved the problem.

Sloan Flushmate Cartridge Troubleshooting

As stated earlier, a misaligned flush valve cartridge can reduce air and water pressure, which eventually affects the Sloan Flushmate’s flushing power. Therefore, if flushing problems arise from the cartridge, it’s good to know how to fix them.

Follow the procedure below to fix an improperly installed cartridge.

  • Cut off the water supply to the tank.
  • Flush the Sloan fixture to ease the pressure.
  • Disconnect the flush rod from the handle connection and move it away from the flush valve cartridge.
  • Use a pair of pliers to remove the cartridge from the handle.
  • Rotate the flush valve cartridge anticlockwise and take it out of the tank.
  • Check the O-rings and remove the debris and other clogs from the accessories. If they are damaged, consider replacing them.
  • Replace the cartridge in the tank and turn it clockwise. Rotate it until a black thread shows above the cartridge.
  • Make 1/4 turns, stopping briefly at each interval until the tank pressurizes and water stops flowing into the bowl.
  • Flush the toilet to check whether you solved the problem.
  • Replace the handle linkage and the flush rod.
How do you adjust a Sloan FLUSHMATE actuator?

Why Does My Sloan Flushmate Keep Running?

Low water pressure, a blocked inlet screen, and a misaligned flush valve cartridge will cause your Sloan Flushmate toilet to run continuously.

How Do You Adjust A Sloan Flushmate Actuator?

  • Turn the water supply on and charge the vessel.
  • Ensure the flush handle or push button is stationary.
  • Set the actuator 1/8 inch from the push button or flush handle.
  • Hold your actuator as you loosen the Phillips set screw in the actuator.
  • Turn the actuator clockwise or anticlockwise to get proper spacing.
  • Tighten the set screw.

Final Thoughts On Sloan Flushmate Troubleshooting

Sloan Flushmate can be a great addition to your restroom because of its water-efficiency capabilities. However, problems like leaking, loud noise, toilet not flushing, sensor not working, and tank not filling with water are some problems to expect when handling these toilets.

So, familiarize yourself with the Sloan Flushmate troubleshooting procedures highlighted in this post.

Here are other interesting topics:

Let Us Know How We’re Doing!

Did this expertly prepared resource answer your question?

Do you have another question about home maintenance, home improvement projects, home appliance repair, or something else?

Get more information, send in questions and keep the discussion going by contacting the I’ll Just Fix It Myself company customer service team at at 1-800-928-1490 or Email us at [email protected]