Replacement of the over-temperature protection switch
(STB) / temperature controller at the defroster (preheater)
43
9.
Withdraw the control system casing.
To do this, push the control system casing in the direction of the rear panel by approx. 3 - 5 mm in
such a way that the press-in keyhole fasteners unlatch from the 4 keyholes of the casing wall.
10.
Pull the fan box with the fan to be changed in direction center of the device and remove it out of the
device.
