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My dryer was not heating properly so I did continuity tests which revealed that the cycle thermostat was bad. I jumped the two purple wires to see if it would work and it did. I ordered the new part, when it came I went to start it while jumped and it shorted out and smoked. Now it will not run unless you hold in the start button, but will then immediately start to smoke and the two purple wires get real hot. any idea what can be done to repair the problem or part to replace. i was thinking about retaping all the wires because there seems to little tiny burn holes in a few of them.
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Rank: Advanced Member
Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455
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Originally Posted by: erickrocks  ...1. My dryer was not heating properly...
...2. so I did continuity tests which revealed that the cycle thermostat was bad...
...3. it shorted out and smoked...
...4. Now it will not run unless you hold in the start button, but will then immediately start to smoke and the two purple wires get real hot... 1. Can you describe it more detailed? 2. How did you do it? 3. Where the smoke was coming from? 4. Did you install the new thermostat or you kept turning the dryer on with those two wires connected together? Gene.
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Rank: Member
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Joined: 4/6/2011(UTC) Posts: 2
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Originally Posted by: Gene  1. Can you describe it more detailed?
2. How did you do it?
3. Where the smoke was coming from?
4. Did you install the new thermostat or you kept turning the dryer on with those two wires connected together?
Gene. Well the dryer would not heat so I started process of elimination with the thermostats, fuse, heating element etc. by checking their continuity which revealed that the cycle thermostat was bad as it was open. I read that to insure that this was the problem, all I had to do was put the two purple wires that went to it, together. I did and the heat started to work. I turned it off and ordered the part, cycle thermostat. Before it got here My girlfriend tried to dry a load but the dryer would not start. Before I put the new part in I wanted to see why it was not starting, it turned out to be a bad door switch, that I temporarily jumped, and the dryer started up, with the two purple wires still jumped. However it started to smoke immediately around the main power circuit area and the purrple wires got very hot. Now the start button will not stay in and must be held in to get action, but it smokes immediately and I stopped. There is also visible little burn holes or marks on a few of the wires. I was gonna take them apart individually and put electric tape on any and all visible marks. I dont want to put the cycle thermostat in so I dont burn it up. Also while trying to start it jumped, it would only start on very hot dry cycle. Thanks for your help if there is anymore info you need feel free to contact me, also my email is erickrocks.hockin@gmail.com
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Rank: Advanced Member
Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455
Was thanked: 4 time(s) in 4 post(s)
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The cycling thermostat  has four terminals. Two large and two small. The continuity suppose to be tested across the two large terminals. Two small terminals are for the internal bias heater and can not be tested for continuity. The normal resistance across these terminals is between 6000 Ohms to 8500 Ohms. If the ohmmeter is set to Rx1 scale then it can show open circuit. The two wires which could be temporary (for a few seconds) connected together for the test purpose only are the red and the red/white wires connected to the large terminals on the cycling thermostat. Putting these two purple (on the wiring diagram these wires shown as violet) wires together created a short to the motor and a back power to the heating element. Possible the damage to the door switch was a result of this short as well. At this time looks like the motor has to be replaced. Hopefully the timer is not damaged yet. - The motor Part number: AP3094245
Gene.
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