Hot water timer unit

[deacon2112]

Our unit in the kitchen comes on during the night for an hour to heat up the water.There is also a power boost button which can be pressed for more hot water.

However,the unit is now overheating,and giving off a slight burning smell.I took the cover off and there is no sign of dark discolouring to the wires or any components.
Any help would be appreciated.

 

[Spark123]

I take it you are on E7? If you are sure it is the unit then best practice is to replace the unit on a like for like basis, does it look something like this?:

http://www.tlc-direct.co.uk/Main_Index/Water_Heating_Index/Immersion_Heater_Timers_2/index.html
Or

http://www.tlc-direct.co.uk/Products/HOELEC7.html

 

[deacon2112]

Its along the same lines except older,at least 15 years old.Its about the size of the bottom one.Think I need an upgrade.

 

[JohnD]

Overheating is often caused by a wire loose in the terminal. More often the Black one, though no-one knows why.