Customer Questions and Answers for Infinite Switch Top Burner Control Switch by Whirlpool

Tom, the motor would need to be tested for 120VAC at the red wire during a low spin. If there is a constant 120VAC, the motor WP74005785 has failed and would need to be replaced. It is likely that the windings are bad and causing the motor to overheat. If there is not a constant 120VAC, the fan switch would need to be tested for 120VAC at the yellow wire and the red wire. If there is a constant voltage at the yellow wire but not the red, the contacts in the switch W10341820 are failing and would need to be replaced. If there is not a constant 120VAC at the yellow wire, the relay 12001452 would need to be replaced.