I have a Maytag Neptune that heats only to 130 degrees on timed and sensor modes. I have changed the gas coils, removed the vent and blower housing and cleaned, and am I'm trying it without the duct. The flame sensor, thermostat, thermistor, and coils (new set) test good. Would the thermostat or thermistor show continuity, but still be bad? I'm guessing one of the two, but I am no expert.
Answer Hello Albert,
Yes, Albert, the thermostat could be bad when showing continuity. The way this could happen is when it gets hot enough that it should open, the contacts inside the apparatus can be stuck and never shutting the heater off. This of course would cause the opposite of your complaint. The thermistor could be part of the issue, but it is more likely to be a control issue than the thermistor, if it ohmed out to the proper resistance (10KO @ 77°F). There could be a lint build-up on the thermistor inside the duct causing it to short cycle. I would suspect the thermistor or the control as the issue.
I am suspecting that you are referring to the highest temperature of the cycle. Here is how the average temperature should be obtained. Insert the temperature probe of your digital meter into the exhaust of the dryer. Start the unit and allow it to top out on its' temperature and cool down twice before annotating any readings. When it tops out, write the reading down.When it bottoms out, write the reading down. When it has done this three times, this is three cycles. Add the six numbers together and divide by six. This number is the average operating temperature.
Checking the average temperature this way should be cycling from about 110°F to about 180°F for an average operating temperature of about 145°F with the unit set to a normal setting.
This thermastat was just replaced last week and used a couple of times. Now its has the same problem. I suspect its open again. Should I replace or is something causing it blow?
Answer Dave, If the thermostat has failed again, check and make sure the exhaust vent duct and vent hood are not restircted,clogged,or kinked. Check the inlet duct under the lint filter and remove any lint build up in the housing. If the unit is in a closet, make sure the doors are remaining open when the dryer is in use.You may also want to consider a new thermistor 35001191, it could be irratic due to the heat stress. Thanks
Electric dryer, comes on but does not heat up.
Answer Hi Christina. I would use a volt/ohm meter part # TJMA-DM1 to assist. you in your diagnosis. There is a thermistor part # 35001191 on the blower housing cover. It should read 10,000 ohms at room temperature of 77°. If not within 5% then change it. There is a safety fuses to the left of it. Make sure it is closed at 0 ohms. Not open or infinity. This will stop the heat. Check the thermostats on the side of the heater assy. part # 35001119. All fuses need to be at o-ohms, closed. They will open in a over heat or a shorted circuit or wire. Make sure the heater ohms out between 10-18 ohms and is not shorted to the casing. Ohm one side terminal to the casing at a time to make sure.