The present invention relates to a motor controller for an air conditioner and a motor control method. The support body has at least two needle-shaped projections on the side facing the cleaning sponge, with these projections being arranged in only one common recess of the cleaning sponge. The method may further include sensing an absolute exhaust pressure at the venturi, and sensing a temperature of the exhaust gases. Stability of the contact between the probe and the tissue sites is assessed while applying the therapy.