Opico Dryer, No air?

[A.R.]

My Opico 795 gas dryer throws up the error No Air when I try to light the burner. Does anyone have any ideas?

 

[Cornish]

There is a little tube (maybe copper pipe) that pokes up after the fan to detect the fan is working. The tube maybe blocked or facing the wrong way?

 

[Henery]

As above, air switch, there is a sensor / switch at the other end of the pipe in the fan housing, I seem to remember the pipe and switch come as one.
You might just have a blocked hole in the end of the sensor tube in the fan housing