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      Webinar Recordings Index Page   11/07/2017

      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) Refrigerator Sealed System Thermodynamics, Part 3 (Length: 1:11:56) Refrigerator Sealed System Thermodynamics, Part 4 (Length: 37:45) Refrigerator Sealed System Thermodynamics, Part 5 (Length: 16:35) 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] Appliantology Workshop   11/09/2017

      Information is the name of the game in the appliance repair trade today. Appliantology is a powerful information tool for the professional appliance repair technician. But just like with any of the more capable tools in your tool bag, many of the more powerful features are hidden from you unless you "read the manual." Ugh! Who wants to do that? Well, this is one time when you don't have to! In this webinar, Team Samurai will personally walk you through the site and show you many of the useful and powerful features that even long-time users probably never knew existed.   
Koffeehound62

HVAC blows cool air in the morning but warm in the afternoon

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Koffeehound62

Here is the description of what my in-laws heater does in the mornings recently but works fine in the afternoon. The morning temps recently have been in the 20's - 30's.

Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas.

The first day I did find the draft inducer was binding up and not spinning. After freeing this up with wd40 it has been working since. I have ordered a new one and will replace it when it arrives. Not sure what could be causing the heat not to work in the mornings. I suspect the colder temps lately have something to do with it but I don't know what component could be " cold sensitive" . Any help would be great!

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Bobice

A drawback to gas heat is that in colder weather is that the gas flows much slower sometimes not at all

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Koffeehound62

Is there any troubleshooting I can do to rule out the gas? The system is a central unit on the roof, I think a Carrier or Bryant. Not sure because I can't seem to find a manufacturers label.

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applianceman18007260692

I wonder is it could be the hose from the pressure switch to Draft inducer?

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Koffeehound62

I just went over and checked it since it is cold out and the draft inducer motor wasn't spinning. The new one should fix the problem but I'll let you know what happens after it arrives and I install it.

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BryanS

I'm confused. In your post you said the ignitor did NOT glow but you heard a hissing for 8-10 seconds. Shouldn't the ignitor be glowing if gas is flowing. I didn't think it would even get to that point if the pressure switch isn't making, which would mean the inducer fan would need to be running. You said it was binding up. It sounded like it was cycling properly once you got the fan running except the ignitor didn't glow. Shouldn't we be figuring out why the ignitor didn't glow even though gas was being put out? I feel like in a typical sequence the ignitor kicks on then gas flows to ignite. Maybe I'm wrong or misunderstanding. I haven't ran many gas furnaces.

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Daveb1972

Guys, you are missing the gold here, igniter should be glowing. Disconnect it and measure its resistance. It should be 60-80 ohms I'd SiC and 10-14 if SiN ( you can tell the difference by the look of the element, SiC or Silicon Carbide is black with shiny flects in it. It is VERY BRITTLE and often is flat with a large flat white ceramic base. The other type is SiN or Silicon Nitride, and is way more durable, and has a matte finish and often a solid bar for the heated part, and also a white ceramic, thought this ceramic will most likely be glazed, the wires are likely to be silicone or Teflon; whereas SiC are usually fibreglass braid coated wires).

The sequence you describe is exactly what should happen when the igniter has failed.

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applianceman18007260692

You could unplug the ignitor and fire up the system with ohmmeter connected to the harness to see if power is getting tothe ignitor. If no voltage hunt down an open lmit and look for blocked stack or something else that would cause a limit to trip.

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Koffeehound62

The new draft inducer fan fixed the problem.

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Daveb1972

If the inducer fixed it then the pressure switch wasn't closing, and that keeps the igniter from lighting. This also means the gas valve should NOT have been opening. This could be a miss hearing problem, or a problem with the control. If the igniter isn't beeing activated the gas shouldn't be flowing even for ignition trial.

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