Earl for Model Number MEDB850WQ0 This is a follow-up to the overheating problem with Maytag Bravos Dryer Model Number MEDB850WQ0. I followed your advice, and found that the heater relay was definitely a closed circuit (continuity). Thank you! That should be my problem. In reading the Tech Sheet for my unit, on page 5, "Heat will not shut off" section, it says to measure the resistance between P4-3 and P4-6 at the connector. Just as a check, I did this and could get no continuity across these two leads, therefore, no resistance measurement. I know the Exhaust Thermistor is good since I replaced it and checked it for continuity. Please explain. I was hoping that my problem of overheating is with the heater relay. The dryer is in very good shape, and the wiring harness looks fine, and not pinched anywhere. Thanks again! It should read as an open circuit, if closed then replace the main control board.
Answer Earl, The reading from P4-3 to P4-6 should read 10k ohms if not the circuit is open, possibly a bad thermistor and/or a loose connection or an open wire. Read More... Answered by AppliancePartsPros.com | Wednesday, July 3, 2019