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      On-demand appliance repair training videos for Professional Appliantologist members Over 30 hours (and growing!) of original, high quality appliance training webinars developed and given by yours truly are at your fingertips, on topics you won't find anywhere else. Fill in those knowledge gaps, strengthen those areas of uncertainty, and boost your skills. Watch on mobile or desktop at your convenience whenever, wherever.  Ultra Short Primer on Basic Electricity, Circuits, Ohm's Law, and Schematic Reading (Length: 1:04:48) Basic Refrigerator Troubleshooting (Length: 1:10:45) Schematic Reading Workshop, 10/2015 (Length 1:19:08) Troubleshooting Strategies for Computer-Controlled Appliances (Length: 48:34) Semiconductors and PN Junctions (Length: 1:04:37) Appliance Temperature Sensing Devices & Technology (Length: 1:27:33) Voltage Measurements, Meters, Ghost Voltages, and Triac-controlled Neutrals (Length: 1:29:32) Troubleshooting with Tech Sheets, Part 1, 4/2016 (Length: 1:09:26) Troubleshooting with Tech Sheets, Part 2, 4/2016 (Length: 1:21:11) Tech Sheet Review, 4/9/2016: Bosch Speed Cooker, Amana Refrigerator, GE Glass Cooktop Range (Length: 1:22:58) Pulse Width Modulated (PWM) Switches used in Samsung Switched Mode Power Supplies (SMPS) (Length: 27:07) PWM Computer Cooling Fan in a Whirlpool Refrigerator (Length: 14:53) Understanding AC Split-phase Household Power Supplies (Length: 52:41) Troubleshooting a Samsung Electric Dryer without Disassembly using Live Tests and the Schematic (Length: 22:47) Troubleshooting a Bosch Dishwasher No-Heat Problem using the Schematic and Live Tests (Length: 15:38) Linear Motors and Linear Compressors (Length: 55:54) Bi-directional PSC Drive Motor Systems in Whirlpool VM Washers (Length: 56:52) Appliance Service Call Structure and Troubleshooting Strategies (Length: 1:00:16) The Ten Step Troubleshooting Tango and Workshop Exercises (Length: 1:35:39) Troubleshooting Ten-Step Tango Advanced Workshop (Length: 1:32:06) Ten-Step Tango Troubleshooting Workshop: Refrigerators (Length: 1:35:57) Whirlpool Duet Washer Schematic Analysis & Whirlpool Dryer Moisture Sensor System (Length: 1:03:04) Neutral Vs. Ground, Inverter Microwave, Digital Communications, Loading Down in DC loads, and more! (Length: 1:14:45) Gas Oven Service Call After a Parts Changing Monkey (Length: 36:04) AFCI and GFCI Circuit Protection Technology (Length: 41:26) Troubleshooting Samsung Refrigerators and more (Length: 1:29:58) 3-way Valves and Dual Evaporator Refrigerators (Length: 1:15:45) Split-Phase Compressors and PTC Start Devices (Length: 1:11:57) Gas Dryer Ignition Systems (Length: 53:50) Refrigerator Sealed System Thermodynamics, Part 1 (Length: 43:07) Refrigerator Sealed System Thermodynamics, Part 2 (Length 1:09:09) To access these webinars and all the other info-goodies here at Appliantology, become a Professional Appliantologist today. If you need cost-effective, time-flexible, state-of-the-art appliance technical training, check out the Master Samurai Tech Academy.
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7Katz

Kenmore Dehumidifier m/n 580.54501500 Motor and Noise

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7Katz

Greeting Fellow Samurais:

This grasshopper has heard strange (loud) buzzing noises from the model listed above; in addition to the buzzing sounds, a hum was heard. In attempting to troubleshoot the unit, I turned on the power and noticed that the fan was turning backwards... At least it appeared to be; the vanes were not turning in a direction so as to "scoop" the air, but in the reverse. It would appear that the polarity is reversed somehow. What would cause this problem? Bad board? Shot sensor? A short circuit somewhere?

The motor itself spins freely; the bearings seem OK. Is there a test I can perform to determine the cause?

Any suggestions would be appreciated. This is a good machine and has worked quite well so far. I would really like to get it back up and running. BTW I have the service manual PDF. Thanks for that, also.

7K

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Need appliance parts? Call 877-803-7957 now!

RegUS_PatOff

Has this Dehumidifier worked for you OK up till now ?

The Fan is AC, and wouldn't turn backwards unless someone replaced the wrong Motor or Fan Blade.

So .... what's "humming" and "buzzing" ?

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7Katz

The motor itself was humming; it seems like it struggles to get up to speed.. There was a buzzing sound coming from the cabinet; I figure it was a loose screw or tube hitting the outer metal. I will double-check all fasteners and loops.

This is the first time I have serviced the motor; even with AC power, is there anything that would cause the motor to run in such a way? To the best of my knowledge this is the original motor.

I have a motor from another unit. But the one in the Kenmore has five ports on the connector end, the extra motor I have has three. Would the board send a "funky" signal to the motor?

Should I just replace the motor? What electronic tests would help, if any?

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RegUS_PatOff

Kenmore 580.54501500 made by LG

other Motors may work, if they are 120v AC

2 speed LG Fan Motor

click on picture

00697565.jpg

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