How to Overcome Tankless Toilet Malfunctions

How to Overcome Tankless Toilet Malfunctions

Tankless toilets, also known as wall-hung toilets or concealed cistern toilets, can occasionally experience malfunctions like any other plumbing fixture. Here are some common tankless toilet malfunctions and how to overcome them:


  • Solution: If your tankless toilet is clogged, you can try using a plunger or a toilet auger to clear the blockage. Be gentle when using these tools to avoid damaging the toilet.

Running Water:

  • Problem: If the water keeps running after flushing and doesn’t stop, it can waste water and increase your water bill.
  • Solution: Check the flush valve and flapper. They might be worn out or improperly seated. Adjust or replace them as needed. Also, check the float mechanism and adjust it if necessary.

Leaking Water:

  • Problem: If you notice water leaking from the base of the toilet or around the connections, it can lead to water damage.
  • Solution: Tighten any loose connections and inspect the wax ring or rubber gasket sealing the toilet to the floor. If it’s damaged, it should be replaced. Ensure the toilet is level to prevent leaks.

Weak or Incomplete Flush:

  • Problem: If the toilet flushes weakly or leaves waste behind, it may not be flushing properly.
  • Solution: Check for mineral deposits or debris in the flush holes and rim holes. Clean them with a toilet brush or a special cleaner. If the problem persists, the water pressure might be low, so ensure the water supply valve is fully open.

Constant Dripping or Refilling:

  • Problem: If you hear the toilet constantly refilling or dripping into the bowl, it can be a sign of a faulty fill valve.
  • Solution: Inspect and, if necessary, replace the fill valve. Adjust the water level to the appropriate height. Make sure the float is not damage or binding.

Unusual Noises:

  • Problem: If you hear gurgling or unusual noises when flushing or after flushing, it can indicate a ventilation issue.
  • Solution: Check the ventilation pipes and make sure they are not block. Ensure that the pipes have proper venting to allow air to flow freely.

Frequent Clogs:

  • Problem: If your tankless toilet frequently clogs, it could be due to excessive use of toilet paper or improper disposal of foreign objects.
  • Solution: Educate users about proper toilet usage and discourage flushing non-biodegradable items. Consider using a toilet paper that is designe to break down easily in water.

No Flush at All:

  • Problem: If the toilet doesn’t flush at all, it could be a problem with the flush handle or the flush valve.
  • Solution: Inspect the flush handle and replace it if it’s broken. Check the flush valve for any obstructions or damage. If necessary, replace it.

If you’re not comfortable with DIY plumbing repairs, it’s best to contact a professional plumber to diagnose and fix the issue with your tankless toilet. Plumbing problems can sometimes be more complicated than they appear and may require specialized knowledge and tools to resolve safely and effectively.