Remove the lid from the toilet cistern and check that the water level in the cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush.
It could be a faulty cistern float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet type cistern valve and how to adjust the water level.
-
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls as water is drained from the cistern when the toilet is flushed. This opens the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
+
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls as water is drained from the cistern when the toilet is flushed. This opens the valve for the water to start refilling the cistern. The float rises with the water level as the cistern fills and then it shuts off the water when it reaches the desired height (or amount of water).
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main. It may not rise in the pan but if it slowly drains from the pan whilst flushing there's still a blockage somewhere. You may need to call a plumber.
Remove the lid from the toilet cistern and check that the water level in the cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush.
-
-
-
It could be a faulty float valve closing off the water supply to the cistern too soon.
+
It could be a faulty cistern float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet type cistern valve and how to adjust the water level.
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls as water is drained from the cistern when the toilet is flushed. This opens the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main. It may not rise in the pan but if it slowly drains from the pan whilst flushing there's still a blockage somewhere. You may need to call a plumber.
Check that the water level in the toilet cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush?
+
Remove the lid from the toilet cistern and check that the water level in the cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush.
-
Remove the lid from the cistern and check how much water is stored there, prior to a flush.
+
It could be a faulty float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
-
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet valve and how to adjust the water level.
+
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet type cistern valve and how to adjust the water level.
-
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls when the toilet is flushed and the water is drained from the cistern opening the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
+
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls as water is drained from the cistern when the toilet is flushed. This opens the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main. It may not rise in the pan but if it slowly drains from the pan whilst flushing there's still a blockage somewhere. You may need to call a plumber.
Check that the water level in the toilet cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush?
Remove the lid from the cistern and check how much water is stored there, prior to a flush.
It could be a faulty float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet valve and how to adjust the water level.
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls when the toilet is flushed and the water is drained from the cistern opening the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
-
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main
+
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main. It may not rise in the pan but if it slowly drains from the pan whilst flushing there's still a blockage somewhere. You may need to call a plumber.
Check that the water level in the toilet cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush?
+
+
Remove the lid from the cistern and check how much water is stored there, prior to a flush.
It could be a faulty float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet valve and how to adjust the water level.
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls when the toilet is flushed and the water is drained from the cistern opening the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main
Check that the water level in the toilet cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush?
It could be a faulty float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
-
[https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet valve and how to adjust the water level.
+
[link|https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet valve and how to adjust the water level.
-
[https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls when the toilet is flushed and the water is drained from the cistern and rises with the water level as it refills and then shuts off the water at the desired height.
+
[link|https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls when the toilet is flushed and the water is drained from the cistern opening the valve for the water to start refilling the cistern. It rises with the water level as it fills and then shuts off the water at the desired height.
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main
Hi @melzmark,
Check that the water level in the toilet cistern is the correct height indicating that there is sufficient water in the cistern to perform a complete flush?
It could be a faulty float valve closing off the water supply to the cistern too soon.
You didn't specify the make and model of the toilet so here are two links that may help.
[https://digitalassets.reecegroup.com.au/m/42d895458604a187/original/Technical-Guide-Performa-Bottom-Inlet-Valve.pdf|This] one shows a bottom inlet valve and how to adjust the water level.
[https://www.thespruce.com/different-types-of-toilet-fill-valves-4094288|This] one shows different types of inlet valves but their principle of operation is basically the same. A float mechanism attached to the valve falls when the toilet is flushed and the water is drained from the cistern and rises with the water level as it refills and then shuts off the water at the desired height.
If you meant that the water in the toilet pan rises when the toilet is flushed and then slowly drains, rather than draining quickly then there's a blockage in the pipe somewhere between the toilet and the sewer main