What Should I Do If The Crockery - AEG KD92903E Gebrauchsanweisung

WHAT SHOULD I DO IF THE CROCKERY WARMER
WARNING! Any type of repair must only be done by a specialised technician. Any repair
done by a person not authorised by the manufacturer is dangerous.
Before contacting Technical Assistance, check on the following:
The c
The appliance has been switched on.
The appropriate temperature has been selected.
The air circulation orifices are covered by the crockery.
The crockery was left to heat up for sufficient time.
Heating time depends on several factors, such as, for example:
Crockery material type and thickness.
Quantity of crockery.
How the crockery is arranged.
You can hear the noise of a fan. If the fan is operating then the heating
element is broken; if the fan is not operating then the fan is broken.
The switchboard fuses / circuit breakers have fused / tripped out.
The crockery is heating up too much:
The temperature selector is broken.
The on/off switch does not light up:
Check whether:
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