Ew for Model Number MEDB850WQ0 Dryer would not run. I checked and found the Thermal Fuse to have an open circuit which indicates it had failed. I also measured and found the Exhaust Thermistor to have an OPEN circuit at room temperature (75 F). According to the Tech Sheet supplied with the dryer, the Exhaust Thermistor resistance changes with temperature, so the resistance at room temperature should have been 8.5 - 13.5 K ohms. The Tech Sheet advised changing the Exhaust Thermistor if the resistance did not fall within the specified range. I just received the new parts, and tested them before installation. The Thermal Fuse tested OK. The NEW Exhaust Thermistor is again measuring an OPEN circuit, which is not in the specified range. Can you please advise me if this is correct for the Exhaust Thermistor? Thanks
Answer Hello EW, You should check the range of your meter since it will have to be set high enough to read the resistance of the thermistor. At room temperature the exhaust thermistor should read 11.5KO to 13.5KO. This will need to be read on about a 20KO resistance range on the test meter. Please note that 20KO is the same as 20,000O of resistance so the 20,000 range will need to be used to read the resistance or the meter will read Ol which means more resistance than the meter can read at that scale on the meter. Read More... Answered by AppliancePartsPros.com | Friday, May 31, 2019