Whirlpool 3387134 Dryer Cycling Thermostat

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Part Number:	AP3131939
MFG Part Number:	3387134
Made by:	Whirlpool

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My dryer heater will not heat up. I have checked the heating element, fuse and cleaned the vent. How do you check the thermostat to see if that is the problem?

Phyl

Answer The two large terminals will be closed, and the two small ones should ohm out around 250 ohms. You also need to check and make sure you have 240 volts coming to the dryer.

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My dryer heat does not warm up enough on the high setting, the medium setting seems to work just fine, but takes longer to dry a load. There is no blockage and I was looking for a thermistor part but do not see one on the parts list your site has. Should we try to replace the thermostat? What other issues would cause the high setting only to no longer work?

Therese for Model Number LER8620PWO

Answer Hello Therese. You will need to check the temperature coming out of the dryer when on high heat. It should read around 160° on the high end, and 110° on the low end. If it is cycling before the 155-160° mark, you may have a bad cycling thermostat. You can test this with a multi-meter with temperature TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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Dryer's Auto Moisture Sensor feature not working.(new sensor P/N: AP3094143 needed?) Also, clothes are getting too hot during Timed Dry settings- even on the Delicate/Low setting. Along with that, the heater element cycles on and off without the drum turning on the Timed Dry setting. All vents are clean, air flows strong. Any help as to what parts to check and/or replace would be greatly appreciated!

B.d for Model Number 110.66842500

Answer Hello B.D! Have you tried doing a load with the dryer doing a load with the vent unhooked from the dryer? If the issue still persists, you could be looking at the dryer cycling thermostat 3387134. Hope this helps!

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Latest Questions

Trying to test Cycling Thermostat. The red outer prongs give an ohms reading of 1.7 ohms on meter, not 0 and not 1, so is the thermostat good or bad? The purple inner prongs give a reading of 7000. Problem is that dryer heats sometimes and not others. It might start out blowing hot, but later blows with no heat. thanks!

Kerry for Model Number 110.79522800

Answer Kerry, the small "brass" colored terminals should have a resistance reading of 5500 to 8500 ohms. The two outer "silver" terminals should be a "closed" circuit at room temperature and an "open" (infinite resistance) circuit at 150 dgrs. with the meter set at the lowest resistance range (RX1 scale).

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I have a Whirlpool Ultimate Care II gas dryer. On the highest setting the heating element immediately turns orange and ignites the gas. However, after about 10 minutes it goes out and never comes back. Does this indicate a problem with the cycling thermostat? If I check the continuity, should I expect it to read "0" even though it does initially start the flame? Thanks.

David

Answer Hello David, This is either a bad coil on the gas valve or the gas valve has failed.

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I have a kitchen aid model keys750jq1. Symptoms: I hear nothing and the motor will not start. 1. I have power at the terminal block 120/240. 2. i checked the door switch, it has continuity. 3. i checked the thermostat heater, it read 7200 ohms. 4. i check the push to start relay it has continuity upon pressing switch in. 5. i disconnected all the wires from the timer and checked continuity per the timer switch diagram on time dry and at end of cycle. the continuity of the switches check out. 6. I checked the motor wire harness. All sockets are open to ground 7. I checked the motor wire harness resistance: white to blue it read 1,840 ohms with PTS switched open and 1,040 ohms with PTS pushed in. 8. I checked the motor terminal spades. At the white to blue terminals it reads 2.4 ohms. All other terminal spade connections are open. Can anyone tell me what is wrong? Thanks.

Matt for Model Number keys750jq1

Answer Matt, You will want to check the continuity of the thermal fuses to make sure that they have continuity. If no continuity then they are defective and would need to be replaced.

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Dryer Cycling Thermostat

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How to Replace Dryer Cycling Thermostat #3387134

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