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      Webinar Recordings Index Page   10/03/2017

      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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      [Webinar] Samurai's Sealed System Sleuthing Secrets - 10/30/2017 @7PM ET   10/19/2017

      Having laid some theoretical groundwork in the last webinar, we're going to focus on practical considerations in this one. That means quick n’ dirty techniques for diagnosing sealed system problem using strategically chosen and skillfully interpreted temperature measurements.  Review homework from the first session on 10-2-2017. Home refrigerator practical design and operating rules-of-thumb useful for troubleshooting Practical application exercises Troubleshooting scenario exercise Techniques for making system temperature measurements for determining superheat and subcooling Sealed system diagnosis homework assignment (to be reviewed in the next webinar in this series) If you attended the first webinar in this series, this is your payday! We’re going to apply that keen, penetrating insight you now possess into money- and time-saving shortcuts you can use to diagnose real-world refrigeration systems on service calls. See this calendar event for more details                   

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Dispelling Two Big Urban Myths about the F35 / Sud Error Codes in Whirlpool Duet Front Load Washers

Samurai Appliance Repair Man

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The F35 / Sud error code is one of the more common codes to pop up in the display of the late-model Whirlpool Duet front load washers. There's a lot of urban mythology out there on the Internet about these codes, their causes, and how to fix them. I'm going to deal with the two most prevalent myths out there and inoculate you against their error.

Urban Myth Number 1: "The F35 / Sud error code is caused by a clogged drain pump and to fix it, you have to clean out the drain pump cleanout port."

Reality: The drain pump and its cleanout port have absolutely nothing to do with this particular error code. The control board is programmed to display completely different error codes pertaining to the drain pump such as:

- F01 Pump driver error

- F21 Long drain time

- F27 Overflow condition

You can find these yourself on the tech sheet located inside the washer, either under the top panel or behind the bottom front panel. On that tech sheet, you'll see over six pages of very specific error codes-- 30 in all! -- dealing with distinct, specific aspects on the machine's function and operation.

The F35 error code specifically deals with faults related to the Analog Pressure Sensor (APS). The Sud error code pertains to excess suds detection in the machine. When these two codes occur together (and they don't always), it leads you to a very specific diagnosis but one which has nothing to do with the drain pump.

I know there's a video out on Youtube with a lot of views where the guy claims this fixed it but I assure you that was purely coincidental. He was a DIYer who was just guessing. Saying that a poor drain caused the F35 / Sud error combo is like saying a flat tire caused your car engine to quit starting.

Urban Myth Number 2: "To clear the F35 error code, try pulling the rubber tube off the APS and blowing hard into the tube nipple on the APS to reset it."

Reality: Blowing into the APS does absolutely nothing good. But it does ruin an APS that was already good. These are not like the old bellows pressure switches. Analog pressure sensors are digital transducers that convert an analog pressure into a digital information stream for the CCU. Telling people to blow into the APS is simply going to make them ruin a hundred+ dollar part.

There is some merit, however, to pulling the black rubber tube off the APS and blowing into it back toward the drum (NOT into the APS) to clear any gookus that may have gotten lodged in there and is interfering with the changes in air pressure being sent up the tube to the APS.

The Light of Truth

Let's take a walk through a Whirlpool Duet washer with the F35 / Sud error code combo and investigate its real cause and how to fix it:

Here's the link to the Analog Pressure Sensor (APS) that I replaced to fix the problem in this particular model: http://www.repairclinic.com/PartDetail/Pressure-Switch/W10415587/1938628

As mentioned in the video, a defective APS is the single-most common cause for the F35 / Sud error code combo. There are at least two variations on the APS theme, so be sure to look up the correct sensor based on your complete model number and buy it here. That way, in the off chance that the APS doesn't fix it, you can return it for a refund and buy either the CCU or the Steamer board.

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