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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.
    • Samurai Appliance Repair Man

      [Webinar] Practical Refrigeration Sealed System Thermodynamics - 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. Here are the topics we're going to discuss: 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) See this calendar event for more details                   
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michla

Amana GUC090B35B Furnance flue problems

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michla

Hi all, been awhile since I've been on here but I've got one for the experts on "furnace-tology".

Strong, gusty 45mph winds typical for Fall here have been messing with my induced draft blower vacuum signal to the pressure switch, especially the cyclonic nature of said winds this year.

Shuts the furnace down prematurely when alternating positive/negative pressure waves in the flue mess with the blower vacuum signal from gusts blasting across the furnace exhaust flue outlet above the roofline. Flue terminates approximately 22 feet above the ground, through the garage roof, along the split level exterior wall, through the adjacent eave of the attached main house terminating about 3 feet above the roofline. PVC 2.5 inch diameter.

Result: the pressure switch diaphram plunger taps the microswitch toggle just slightly enough to open the circuit making the furnace controller think the draft blower has failed--result, premature flame shutdown and begin another inefficient heating cycle. The flue top has a convex rain cap of course.

Draft blower is new last winter. Pressure switch vacuum tests prove ok for possible torn diaphram. Pressure microswitch continuity tests check ok at microswitch. I relocated the pressure switch closer to the draft blower with a much shorter hose a week ago when the wind was blowing thinking that would help with a stronger vacuum signal but particularly bad winds this weekend proved that futile.

Tonight it’s calm here for the first time in 4 days and the furnace is completing heating cycles normally. I’m now wondering what I can do to keep gusts from creating pressure waves down the flue or wind-capping the flue.

Does anybody know of a flue-cap product for just such a condition? Is there a flue cap made specifically for wind problems like this?

Edited by michla

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Bullstok

post picture of flue termination if possible. closer up and farther away.

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michla

I'd like to, but I don't have a premium subscription here to upload photos

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kdog

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RegUS_PatOff

I'd like to, but I don't have a premium subscription here to upload photos

upload to some photo / hosting / sharing site, then post the links here ...

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michla

I've got it--answered my own post !

I didnt even know a "directional wind cap" exists till someone told me yesterday---pivots a shield around like a weathervane with the wind. That's it, Im on it.

Thanks guys.

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