Customer Questions and Answers for Thermostat Heater by Whirlpool

Lori, if this is occurring during the automatic dry and not the timed dry, the most likely cause is from a detergent residue build-up on the sensor bars that can be cleaned using vinegar and a cloth to scrub the residue off. This is a common occurrence that happens over time from the detergent molecules left in the clothes collecting on the sensor bars when the clothes touch the bars.