I disassembled the dryer and through troubleshooting found that only one of three heater elements on the back wall of the fryer was working (turning orange). I traced the wiring from the heater elements back to the control board assembly where I found a severe short (burn mark) on the surface of the board. I purchased a new control board assembly which solved the problem. When installing the new board, be sure to transfer the jumper assembly from the old board to the new board. Otherwise the digital display will flash "88" and the dryer won't work.