Dual Flush Toilet Keeps Running

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Find the solution for every problem with your toilet

There could be numerous reasons behind your dual flush toilet keeps running. The most common cause is related to the dual flush valve seal. A dirty, warped, or worn-out valve seal will create inadequate sealing and cause this issue. Another prominent reason is a defect in the fill valve that keeps filling the toilet tank continuously. 

We will investigate several possible reasons behind your malfunctioning dual flush toilet. We’ll also offer you dependable solutions to get rid of this problem. 

Find The Reason Why Dual Flush Toilet Keeps Running

Dual flush toilets may be the most effective way to save water. However, these toilets often present problems that go against their environment-friendly nature. If your toilet keeps running after you flush, a large amount of water would be wasted. Dual flush toilets suffer from such issues due to various reasons. 

Presence of debris

It is possible that there is unwanted debris in the water supply. An unclean water supply can cause several issues with your dual flush toilet. One of them is the constantly running water after flushing. If too much dirt and dust accumulate inside your toilet, the functioning of the fill valve can get disturbed. 

You must look for debris and dirt inside the fill valve to investigate this problem. Remove the lid of the fill valve and look carefully with the help of a torch. You could remove the debris by several methods. The most recommended technique is with the help of a small brush. Once your fill valve has been adequately cleaned, you may see the difference in the functioning of your fill valve. 

Misaligned seal 

There may be a problem with the seal or the flapper of your toilet. This could result in constantly running water. Rubber seals can get damaged and misaligned with the passage of time. Such an issue can be investigated by turning off the water supply of the toilet and then checking the seal. 

Note that all the water from the toilet will have to be removed. The seal can be conveniently accessed with the help of a flush valve canister. See if there are any breaks or cracks in the seal. Broken seals will have to be replaced. You also need to check whether the present seal can be realigned or is out of bounds. 

Damaged zip tie 

See whether the zip tie of your dual flush toilet is intact. The zip tie is responsible for keeping the base of the fill valve in the correct position. An improperly set zip valve can lead to a constantly running toilet. Zip ties are more vulnerable to damage as compared to other components of the toilet. 

If a zip tie is broken, it’ll have to be replaced with a new one. In most cases, such a problem can be diagnosed and solved on your own. Many people utilize two zip ties on the fill valve to ensure the stability of their toilet’s base. However, if you aren’t able to decipher the root of this problem, it would be wise to take the help of a professional plumber. A problematic toilet fill valve will keep filling the tank and the flow of water down to the toilet bowl will continue. 

Higher toilet float 

An Afloat cup is present inside the vertical fill valve. The opening and closing of this valve are controlled by the float. This float moves to the bottom of the toilet tank when you flush. This opens the fill valve which then starts filling the tank. 

The float moves to its definite position when the fill valve shuts down. In case the height of the toilet float is more than the ideal height, the excess water enters the overflow tube and the toilet bowl. Any defect in the fill valve of the float could result in the constant running of a dual flush toilet. 

Dual Flush Toilet Keeps Running

Know how to fix a constantly running dual flush toilet 

Whatever be the reason behind a constantly running dual flush toilet, it can be corrected and this wastage of water can be stopped. However, you need to ascertain the exact reason behind the problem before it is corrected. To properly examine the case, you ought to remove the lid of your toilet tank and store it in a safe location. 

If the excess water inside the tank is flowing through the overflow tube, the problem lies in your fill valve. Otherwise, the problem will possibly lie with the toilet seal. To determine the exact cause, you ought to check the level of water inside the tank in relation to the overflow tube. When the tank contains excess water, it flows through the overflow tube. 

A problem with your toilet float or fill valve can thus be diagnosed if the water flows through the overflow tube. It is possible to adjust the height of a toilet floats conveniently. If you incur any damage to the toilet’s fill valve, it will have to be replaced. You can easily get a new toilet fill valve along with a toilet float at any hardware store. 

Fix a dual flush toilet seal 

The toilet seat of a dual flush toilet is the commonest area where the problem lies. 

Step 1: turn off the water supply 

It is essential that you turn off the water supply of your toilet and then follow the further steps. The toilet shut valve is present behind the toilet and it needs to be turned in a clockwise direction. 

Step 2: flush the toilet 

Once you’ve shut down the water supply for the toilet, flush the toilet and keep holding the lever down to eliminate the maximum water.

Step 3: Remove the lid of the toilet

Carefully remove the lid of your toilet and store it in a safe place. 

Step 4: turn the dual flush valve body

Firmly hold the dual flush valve body and rotate it in a clockwise direction. This will help you remove it. 

Step 5: check the status of the seal

Now you can check the status of the seal. See if it is worn out or damaged. 

Step 6: replace the seal

If the seal appears very damaged, replace it. However, a dirty seal can be cleaned and put back in place. A misaligned seal can be straightened and put back in its position. 

Step 7: position the valve

Reinstall the valve that you had removed to check the seal. You can then turn on the water supply to the toilet tank and flush again. This should solve your problem.

Fix a faulty toilet fill valve 

Maybe the problem lies in your toilet fill valve. You cannot really repair your toilet fill valve. You’ll need to replace it. Get yourself a good-quality fill valve from a reliable hardware store. It is easy to set up a fill valve by yourself. 

Adjust the water level of your toilet tank 

It is possible that the culprit is the excess water in your toilet tank. 

Step 1: turn off the water supply to the toilet

It is important that you shut down the water supply to the toilet and then flush it to get rid of water in your working area. 

Step 2: Remove the toilet tank lid 

Carefully remove the toilet tank lid and store it in a safe place. 

Step 3: Adjust the height of the float 

You can adjust the height of the toilet float with the help of a special screw. This screw has to be turned in a counterclockwise direction with the help of a screwdriver. 

Step 4: Open the water supply

See if opening the water supply to the toilet tank now brings the water to a new level. 

Step 5: Adjust the screw

You can adjust the screw with the screwdriver until you attain the height you desire. 

Conclusion 

It is not very difficult to diagnose the exact problem with your dual flush toilet, but it is very important to spot the reason so that there can be a solution. See whether the problem lies in the fill valve, the toilet seat, the toilet float, the zip tie, or whether there is excessive debris. 

You ought to shut off the water supply of the toilet and empty all the water to examine the exact cause. Proper observation will reveal where the problem lies. A faulty toilet float and a damaged fill valve can be replaced. The height of the toilet float can be adjusted as a solution. 

The zip tie also poses this problem in conjunction with the fill valve. A damaged zip tie will also have to be replaced. One ought to examine the condition of the toilet seat and see whether it can be adjusted or it is damaged enough to seek a replacement. 

Note that all of these components are easily available at any other hardware store. Get your toilet repaired on time so that such excessive wastage of water may be prevented. 

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