Question about Maytag Neptune MDG5500AW Gas Dryer

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Motor won't start when machine fully wired

If I pull a red lead off of the low temp sensor (L120? it has two small red leads), I can get the dryer to start fine, but the igniter/gas won't do its thing. If I reconnect it when running (or short across the sensor by directly connecting the two leads), the dryer stops after about two seconds, probably via safety switch. However, if I repeatedly tap the lead against the prong where it normally connects (1-2 times a second), the igniter will glow, the gas will ignite and the dryer will run properly. This perpetuates until the L160 kicks in with the door is on, or the high-temp safety kicks in with the door off. Or until I get tired of testing it.

It's difficult to say if there is a problem with the low temp sensor since I can get the dryer to work by including it in the circuit via the tapping method. The dryer is always tested cold (55F in the basement). Any ideas before I go on a part chase?

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Do you have a ohm meter ? if so you can check the low temp sensor for a open should also check the hi temp sensor they are both required in the circuit for the dryer to work properly they should both read as closed circuits what you are doing with the tapping is reseting the fault timer in the control that is why you can get it to run like that
The gas valve and ignitor will not work if one of the sensors is bad there is also a flame sensor if it is bad it will not let the dryer run look at the wiring diagram on the back panel these are the things I would check first

Posted on Dec 15, 2007


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