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how can I fix my eternal 2KW CSTD convector heater?

My daughter put a damp t shirt over the heater to dry and it stopped working.
Lucy, January 2017
If it's of any reasonable quality it will have a Thermal Fuse - your Thermal Fuse may have popped - you might mend it yourself or have a technician see to it.

I just guess -

https://www.youtube.com/watch?v=pRoryTFM8hM

Good Luck..., January 2017