If your Morphy Richards kettle reaches boiling point but continues boiling without switching off automatically, this may be caused by a damaged or incorrectly fitted limescale filter, a lid that isn't fully closed or excessive limescale build-up.
Many Morphy Richards kettles use steam travelling through an internal steam pipe to activate the automatic shut-off mechanism. If steam escapes before reaching this mechanism, the kettle may continue boiling.
Important: If your kettle fails to switch off automatically, switch it off, unplug it and stop using it until the issue has been resolved or assessed.
Why Does My Kettle Keep Boiling Without Switching Off?
The possible causes include:
- Damaged, missing or incorrectly fitted filter: Steam may escape instead of travelling through the intended route to activate automatic shut-off.
- Lid not fully closed: Steam may escape through the lid rather than reaching the shut-off mechanism.
- Limescale build-up: Excessive mineral deposits can affect kettle performance and may contribute to abnormal boiling behaviour.
- Automatic shut-off mechanism: If the lid and filter are in good condition and the kettle has been maintained correctly, an internal fault may require assessment.
A kettle continuing to boil without switching off is not normal operation and should not be ignored.
How Does My Kettle's Automatic Shut-Off Work?
When water reaches boiling point, steam travels through an internal steam pipe to activate the automatic shut-off mechanism.
For this to work correctly, steam must follow the intended route.
If the lid is open or the removable limescale filter is damaged, missing or incorrectly fitted, steam may escape before reaching the mechanism.
This means a kettle that continues boiling does not automatically have a faulty heating element or thermostat. The problem may be associated with the lid or removable filter.
Can a Damaged or Missing Limescale Filter Stop My Kettle Switching Off?
Yes. On models where the filter forms part of the intended steam path, a damaged, missing or incorrectly fitted filter can prevent automatic shut-off.
When water reaches boiling point, steam travels through an internal steam pipe to activate the automatic shut-off mechanism.
If the filter is torn, damaged, missing or incorrectly fitted, steam may escape rather than travelling through the intended route. This can prevent the kettle from switching off automatically.
With the kettle unplugged and completely cool:
- Check that the removable limescale filter is correctly positioned and securely fitted.
- Inspect the filter for tears, holes, warping or other visible damage.
- If the filter is removable and contains mineral deposits, clean it according to the appliance's cleaning instructions.
- If the filter is damaged or missing, replace it with the correct compatible part.
Replacement limescale filters are available to purchase for many Morphy Richards kettle models through our Spare Parts collection.
Use your kettle's model number to check compatibility and availability before purchasing. If a suitable replacement filter is not listed, please contact Customer Support for further assistance.
Removable filters are maintenance parts and are not normally covered for routine wear or accidental damage under the appliance guarantee. This does not affect your statutory consumer rights.
Do not continue using a kettle that fails to switch off automatically until the issue has been resolved or assessed.
Can an Open or Incorrectly Closed Lid Stop My Kettle Switching Off?
Yes. An incorrectly closed lid can allow steam to escape and prevent the automatic shut-off mechanism from operating correctly.
With the kettle unplugged and completely cool:
- Check that the lid closes fully and securely.
- Make sure nothing is obstructing the lid.
- Inspect the lid and its closing mechanism for visible damage.
If the lid is damaged or will not close securely, do not use the kettle until the issue has been resolved or assessed.
Always ensure the lid is correctly closed before operating your kettle.
Can Limescale Cause My Kettle to Keep Boiling?
Excessive limescale can affect kettle heating performance and may contribute to abnormal operation.
Limescale forms naturally from minerals in the water supply when water is heated. It is not produced by the kettle and does not, by itself, indicate a manufacturing fault.
Limescale can develop in both hard-water and soft-water areas. Soft water still contains dissolved minerals, although deposits generally form more slowly.
Morphy Richards recommends checking for limescale regularly and descaling approximately once a month as a general guide, depending on usage and water hardness.
Use a proprietary descaling product suitable for your kettle and follow the product's instructions.
If your kettle has failed to switch off automatically, do not repeatedly operate it to test whether descaling has resolved the issue. Keep it unplugged until the safety concern has been resolved or appropriately assessed.
Does a Kettle That Keeps Boiling Mean It's Faulty?
Not necessarily.
A damaged or incorrectly fitted removable filter, an incorrectly closed lid or excessive limescale may contribute to automatic shut-off problems.
These causes do not automatically indicate a manufacturing defect, and replacing the entire kettle may not be necessary if the issue relates to a replaceable filter.
However, a kettle that continues boiling without switching off is a potential safety concern.
If the lid and filter appear correctly fitted and undamaged, or the cause remains unclear, the appliance should be assessed before further use.
What Should I Do If My Kettle Won't Switch Off?
If your kettle has continued boiling without switching off automatically, leave it unplugged and contact Morphy Richards Customer Support with:
- Model and serial number – Found on the appliance's rating label.
- Place and date of purchase.
- Proof of purchase – If not already provided with your warranty registration.
- Photographs – Clear images showing the inside of the kettle, including the base, lid and removable filter where fitted.
- Checks completed – Including the condition of the lid and filter, and when the kettle was last descaled.
We can check your warranty registration using your email address, but proof of purchase may still be required to validate your warranty.
This information will help us assess the appliance's condition, identify whether a replacement part or further investigation is appropriate and advise on the next steps.
Do not continue using the kettle, repeatedly test the automatic shut-off or attempt to dismantle or repair the appliance yourself.