Frigidaire Dryer AEQ6000ES2 only works on LOW or Air Fluff-No Heat

[sup3rs74r]

Hello. My dryer only works when the temperature LED is in LOW or AIR FLUFF/NO HEAT. If I select MAXIMUM, HIGH or MEDIUM then the dryer blinks three LEDs (drying, cool down, extended tumble), beeps three times and nothing happens. I entered diagnostic mode and the only error shown is E9E followed by 000. I got a E68 followed by 002 but I cleared it and never again appeared. I also found that if I turn the selector knob three counterclockwise turns instead of two I get codes like C01 00 192, C02 01 032, up to C11 00 000. Do these "extra" codes mean anything. I have verified both the Thermal Limiter and the High Limit Thermostat to have continuity, so I think they are OK. I also checked the resistance of the Control Thermistor and it reads 53.4K which I believe is normal (less than 10% variation from the manual 50k). I have checked wiring and there is 120V between RED and WHITE, 120V between BLACK and WHITE and 240V between RED and BLACK. This was checked inside the dryer where the power cord goes out. I also ran the Function Tests. All functions perform OK. The only thing I noticed is that when I turn the selector knob, from flashing LEDs to motor ON heater ON, I have to press the SELECT button to make the dryer start. The same thing happens when going from motor ON HEAT off to motor ON heat ON, the heater relay does not "click", but if I press the SELECT button, I hear the click and the thermistor number starts to go up. I have a bad feeling about the control board. Is there something I could be missing? Thank you very much for any help