What you can do
- Check that the button has returned and nothing holds it down. Do not pry open the enclosure.
- If flow continues, close the accessible toilet supply valve only if it moves easily.
- Identify the model. Open the service access and clean or replace parts only as its instructions permit, with water isolated.
How to tell whether it helped
After repair, test a full flush and refill. Continuous flow and floor leaks should be absent.
When to stop
Stop if the valve is stuck, water escapes outside the bowl or access is unclear.
How NAPREMO can help
NAPREMO can assess the mechanism and matching parts. Send FIX a photo of the button or cistern and its model.