Asko butterfly dryer (condenser) control panel has ceased to operate with the exception of the P4 button on Air Fluff. For awhile the P1, P2 and P3 buttons would work, but the dryer would need to sit idle or be turned off, but ultimately it would finally start. But most recently, the P4 has been the only button to work, and then oddly enough the machine would start on its own at any time in air fluff (no heat). We see the problem to possibly be one of three, 1) the control panel is worn out, 2) the element is also burned out, but this doesn't seem probable since it was functioning until the most recent control problem, or 3) there is a sensor that we are unaware of that has failed.