The Bosch WTMC8520UC Dryer has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your Bosch might be giving you.
The 'Start/Stop' indicator light does not illuminate
This is a reminder and not an indication of a problem
A warning signal is emitted and the display shows 'E:01'
Exhaust air duct is blocked or too long
Possible causes include a fault in the program sequence or malfunction, unsuitable program selection, or the motor limit temperature was exceeded
The drying program did not meet the expected dryness level
The sensor is not functioning properly due to dirt accumulation
The air duct is obstructed causing inefficient drying
The initial moisture content in the laundry was too high
The dryer exceeded the programmed drying time
The motor overheated during the drying process
There is no power supply to the dryer
The dryer has not been set to any program
The drum light does not function
The dryer is not receiving electricity
The dryer door is open
The room temperature is too low for optimal dryer operation
The gas supply valve is not open
There is an error in the program execution