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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                   
herfdog

ZDIS150WSSC GE ice machine

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herfdog

Ice formation is great but the ice freezes together in the bin where it is supposed to slowly melt away to make room for fresh ice. In the bin it turns into a giant ice ball which cannot be broken up very easily or removed.  I noticed the bin was freezing cold even with the door open and little ice in it. I've seen lots of problems with ice machines but not this. The sealed system has not been serviced so I do not expect an over charge to be the problem. Has anyone ever seen this? And what should be done to stop the excessive freezing?

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AccApp

That makes no sense. This is what I call a "sheet-cutter" type icemaker. Water is pumped and recirculated onto an evaporator plate (which is the only source of heat removal in the compartment) until it is sensed to be thick enough. The valve then switches to shove hot gas through the evaporator which then releases the sheet of ice onto a grid of heated wires which then cut it into 3/4" x 3/4" x sheet thickness pieces. The usual failure for these is to have a wire in the cutter grid break and not be able to cut the sheet into pieces. Is it making normal size pieces? When is the last time you cleaned it? Do you have unusually hard water in your area?

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herfdog

I agree, this makes no sense! Which is why I posted my question. I completely understand that the evaporator plate is the only source of heat removal in the unit. 

The wires on the grid are all intact and it is heating and making perfect 3/4 x 3/4 cubes which in turn freeze together at some point later on. The hot gas valve is doing it's job correctly in the harvest cycle, releasing the sheet of ice before the next freeze cycle begins. The machine was descaled recently and the evaporator plate looks clean. The water in this area moderately soft.

And to answer most of your points, ice is not clinging together until after it's been in the bin for a while.

 Again I ask, has anyone ever seen this before or have any clue as to the cause? 

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AccApp

That is truly bizarre and something I've never seen. The only thing I can imagine causing this would be some contaminant in the water source.

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herfdog

Bizarre is the right word to describe this. What kind of contaminant causes re-freezing?

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AccApp

Salt could cause ice cubes to freeze together, maybe something else could. Has anyone else ever seen this? 

 

And how long did this run normally before the problem developed?

 

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herfdog

Salt... perhaps a malfunctioning water softening system could cause this. Salt in the water would cause the evaporator to work overtime to make the sheet of ice in the first place, wouldn't it? Possibly causing the colder temps in the bin that I noticed.

I do not know how long it ran normally before this problem started.

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AccApp

Do you have a water softening system in use?

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herfdog

I don't know if they do or not.

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