Bovie pedal problem

Hi, I have a problem with two Icon GP, that were recently bought. Both work well when activating cut and coaguation with the handpiece. However, when I try to activate cut and coagulation from the pedal there´s no output power. I believe the pedal works correctly because when I press the yellow pedal, I can observe on the screen that cut is selected but I have no output. The same occurs with coagulation.