If your Morphy Richards kettle keeps boiling and won’t switch off automatically, this is usually caused by limescale build-up inside the kettle.
Limescale is a natural result of heating water and, over time, it can affect how your kettle operates — including how it detects when the water has reached boiling point.
This guide explains why this happens and how to care for your kettle to keep it working as expected.
Why your kettle keeps boiling
The most common cause of a kettle continuing to boil is limescale affecting the heating element.
Kettles are designed to switch off automatically once the water reaches boiling point. However, when limescale builds up:
It can coat the concealed heating element
It may interfere with temperature detection
It can prevent the kettle from switching off at the correct time
This can result in the kettle continuing to boil after the water has already reached temperature.
What is limescale?
Limescale is a white, chalky deposit made up of minerals such as calcium and magnesium, which are naturally present in tap water.
It forms when water is heated
It builds up more quickly in hard water areas
Over time, it can collect inside your kettle, particularly on the heating element
Limescale is a normal occurrence and not a fault, but regular care is important to maintain performance.
How to care for your kettle
As outlined in your Morphy Richards user manual, regular descaling is essential:
Descale regularly – we recommend descaling your kettle every month, depending on usage and water hardness
Use a proprietary descaling product suitable for stainless steel, glass or plastic
Follow the descaling product instructions carefully
Ensure all electrical connections are completely dry before using the kettle again
⚠️ Important: Excessive limescale can affect performance and may cause the kettle to switch off incorrectly. Regular descaling helps prevent this and supports the long-term use of your kettle.
How to reduce limescale build-up
Empty the kettle after use instead of leaving water standing
Avoid overfilling beyond the maximum fill line
Descale more frequently if you live in a hard water area
Regular care will help your kettle operate efficiently and reduce the likelihood of ongoing boiling issues.
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