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Yes, Another No heat but....

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Yes, I know another no heat question. Everything works except heat. Tested continuity on element- check Thermal Limit switch continuity-check

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  #1 (permalink)  
Old 07-10-2014, 09:27 AM
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Default Yes, Another No heat but....
Model Number: MDE9700AYM   Brand: Maytag   Age: 5 - 10 years   

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Yes, I know another no heat question. Everything works except heat.

Tested continuity on element- check
Thermal Limit switch continuity-check
Thermostat resistance-check
Blower thermostat continuity-check
Checked voltage at dryer terminals (120 and 221)-check

What else can I check or need to recheck? ANythoughts or advice is greatly appreciated


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  #2 (permalink)  
Old 07-10-2014, 01:46 PM
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See the attachment for the tech sheet.

Check the thermistor resistance.

If OK then all that is left in the heater circuit is the heater relay on the board or the centrifugal switch on the motor.

You could check across the black to blue wires (heater relay contacts) at the control board.
With the unit plugged in and at rest you should see 0 volts.
Start a heating cycle, if you get 240 volts then you know that the relay contacts are not closing.
This could be the relay itself or the electronics that control the relay.

If you decide to try this test be very careful because you are messing with 240 volts which is lethal.


If you do not get 240 volts then odds are that the centrifugal switch on the motor is not closing or is bad.
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Old 07-10-2014, 05:02 PM
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Denman You are the BEST! You were right Thermistor was bad. The funny thing is I replaced it with a brand new it must have been DOA. I reset the code and put in my old one (I ordered a new thermostat, thermal cut off and thermistor because my thermostat went out. I replaced all three at the same time)back in and everything works.
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