I have seen from other questions that since my Bosch Exxcel Tumble dryer is only blowing cold air into the clothes then I should check the small red trip switch inside the back of the machine. I have done this and tried to press the red button inward but it seems lifeless and does not click in.. what am I doing wrong ?

John Dunlevy, January 2010

You need to check if the elctricity is getting too the heater. The heater connections can been seen on the righthand side looking at the back of the machine. A mains tester is required or you could use a lamp holder and flex with a bulb. (But be carefull electricity can kill)
If power is at the two connections the heater has blown and replaced it is the only way forward.

pfixit, January 2010