This micro-switch is designed for use in your microwave. The function of this part is to monitor the door latch position and communicate to the electronic control board whether the latch is open or closed. If your microwave does not provide heat, or will not start properly, you may need to replace the micro-switch. This part is approximately 1 inch in length and 3/4-inch in width. It is made of black plastic with two metal prongs. This is an OEM part sourced directly from the manufacturer. This part is sold individually. Be sure to disconnect the microwave from the power source before you begin this repair.
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Woody
October 15, 2017
The microwave seems as if it is operating normally, timer, light, turntable, but does not heat food. What part, or parts do you think i need to fix the problem?
For model number LTM9000ST
Hi Woody,
Thank you for your question. I would suggest testing your door micro switch. If that part is not working it will not allow your magnetron to activate and heat your food. You should also check your diode, and your fuse as well. If all of those parts are fine it may be your magnetron that is the issue. Good luck with your repair.
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Vince
September 9, 2017
Microwave only works if i push on door.
Hello Vince, thank you for contacting us. That would be the door switch, it would need to be replaced. Some models have more than one switch in the door, you may want to replace all of them at the same time. Good luck with the repair!
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Dave T
January 2, 2018
A fan continues to run when the door is opened. Previously it did not do this.
For model number LMV2015ST
Hello Dave, Thank you for your inquiry. We would recommend checking the following parts to fix your issue: the micro switches for the door, the exhaust fan motor, and the control board. You can test the parts with a multimeter. If you are unfamiliar with how a multimeter functions, there are YouTube videos available to assist you. Hope this helps!
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George
July 16, 2019
The microwave turns on, but shuts off after a few seconds and the light goes out. Jeanette recommended to replace switches part number PS352923/294. Are there any more switches besides those two for the above microwave? Why does the light go out also? Is there another problem other than the switches?
For model number LCRT1513ST
Hi George,
Thank you for your question. There are 3 door switches listed for you microwave. The part number for 2 of the door switches are PS3529294 and the part number for the third switch is PS3522736. If the light is going out after few minutes the issue would be one of the door switches and you will need to test the parts with a multimeter. Here is a link to one of our videos on YouTube that you may reference on how to use one, https://www.youtube.com/watch?v=bWC44fHn0As. I hope this helps. Thank you and have a great day!
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Sandy
September 3, 2019
Microwave turns on when the door is open which sensor do I need?
For model number LCRT1510SV
Hello Sandy, Thank you for the question. I recommend testing each switch to verify the defective part, but the most commonly replaced door switch is the PartSelect Number: PS3529294 when the appliance operates when the door is open.There are 2 of these switches. Hope this helps!
Would this part affect the light, turntable and magnetron from working
For model number LMV1683ST
Hi Jeff,
That is a great question. The function of this part is to monitor the door latch position and communicate to the electronic control board whether the latch is open or closed. If your microwave does not provide heat, or will not start properly, you may need to replace the micro-switch. I hope this helps. Thank you and have a great day!
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Matt
February 14, 2020
For our LG lmh2016st microwave the interior fan comes on when the door is opened. Everything else works fine. A video on the web indicated this could be corrected by replacement of one or both of the door switches. On your website the following two micro switch pns that look like what was in the video: Ps3522738, ps3529293. Which of them would be appropriate for the problem i described? Maybe one is for the top latch and the other for the bottom?
For model number LMH2016ST
Hi Matt,
Thank you for your question. There are 3 door switches or micro switches listed under your model number. The part number for the switches that would fit in the top and the bottom of the switch holder is PS3522738. The part number for the switch that would go in the middle of the switch holder is PS3529293. We hope this helps. Thank you and have a great day.
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Mark
December 11, 2018
When you put a item in and closed door and set timer and hit the start button nothing happens
For model number LMV1813ST
Hi Mark,
Thank you for your question. If the dryer is not starting after you hit the start button, there are some parts that you will need to check to see which ones are causing the issue. You will need to check the fuse, the micro switches, the lamp holder and the capacitor. I hope this helps. Thank you and have a great day!
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Michael
February 11, 2019
Part #4002 in schematic shows continuity with door open. Parts #4001 show continuity with door closed. Is that correct or should #4002 show continuity when closes as well. No power displayed at all. Ceramic and tco both show continuity. Made a modest pop sound and then everything went dark. Any suggestions? Michael
For model number Lmhm2017st
Hello Michael, Thank you for contacting us. Yes, PS3529294 is supposed to show continuity in the open position and PS3519053 must show continuity in the closed position. I suggest checking the following parts: PS3522743 Fuse,Time Delay, and PS3529294 with the multimeter. Hope this helps!
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Michael
February 11, 2019
Both ps3529294 and the one ps3592923 microswitches all test properly and the door latch mechanism properly engagesall 3 of them. Ps3522743 20 amp fuse,time delay, also shows continuity through it. There is no power display on the board on the board when plugged in. Door open or closed makes no difference. The thermal cut off ps3530459 also shows continuity but again there is no display of anything on the unit.
For model number lmhm2017st
Hello Michael, Thank you for contacting us! I suggest now checking PS3530459 Thermostat, and PS3519053 Holder Assembly,Locker with the multimeter. Good luck with the repair!
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