Understanding the distinction between voltage and voltage drop as well as understanding what a load is in an electric circuit are essential troubleshooting concepts for the professional appliantologist to grasp. In my years of working with other appliance techs online here at Appliantology.org, I have found that many, from rookies to seasoned and battle-hardened techs, do not have a firm grasp of these concepts. As a result, many professional appliance techs (I said many, not most) don't know how to effectively troubleshoot electrical problems in an appliance using a schematic in a coherent and strategic way.
For example, if you don't understand electrical loads and voltage drops, how will you apply the standard troubleshooting technique of load analysis when you're analyzing a schematic to figure out why a motor isn't running? Or, another example, if you don't understand the difference between measuring voltage and measuring a voltage drop, how will you apply the time-honored troubleshooting tactic of half-splitting to locate the missing voltage in a circuit?
The video below is a sample from the Samurai Appliance Tech Boot CampFundamentals of Appliance Repair Course and explains the concepts of voltage, voltage drop, and loads:
The Samurai Appliance Tech Boot Camp teaches these and other basic skills of the trade in the Boot Camp's Fundamentals of Appliance Repair course and fills in these and other knowledge gaps that many techs have. Whether you're new to the trade or you've been in it for many years but have never had the opportunity (or time) to gain these fundamental technical skills, you can learn them conveniently online at your schedule and pace right from the comfort of your computer. The lessons are a combination of text, video, and audio and most of the lessons have a quiz at the end to test your knowledge and help you think about and apply the concepts to ensure you have a firm grasp of them. Most of all, it's a fun way to learn!
Bosch dishwasher not heating? Stalling in cycle? Not filling? Some other weird problem? Wouldn't it be nice if you could get just get some clue about what's wrong? Well, you can!
All Bosch dishwashers (and most modern appliances that use electronic control boards) store fault codes pertaining to specific areas the appliance is having a problem with... or at least the areas that the control board thinks is having a problem. Anyway, it's a good place to start. These control boards all have a secret key dance to enter that secret service mode and receive those error codes.
Now, for the first time ever in the history of the Interwebs, Brother PDuff reveals the super secret key dance to enter service mode and retrieve the stored error codes. Let's listen in...
You can try to access the test program to retrieve possible fault codes:
With the door closed, press and hold the second and fourth buttons to the right of the display while pressing the On button. As long as these two buttons are pressed, the associated leds will light, then the display will show the model coding identifier. Release the two buttons. Press the same two buttons to display any stored fault codes:
0 = No fault 1 = Fault in Hydro Sensing system 2 = Heater fault 4 = Fill fault 8 = Fault in NTC system 16 = Water switch cannot be positioned
Note: If more than one fault is detected, the fault code is added up. Ex: Fault code 3 = fault 1 + fault 2.
The Samurai Appliance Tech Boot Camp is currently in the Beta testing phase. Final pricing for tuition will be announced after the Beta phase. The Beta class will be a very small group of carefully selected early testers who agree to provide constructive feedback for improving the course. After the Beta period, all students will pay the full tuition at the current rates.
The specially-reduced tuition for the Beta class is $100 for the first half of the course, Part 1: Fundamentals.This is a fraction of what the full tuition for Part 1 will be. Financing is available.
If you would like to be considered for the Beta testing group, please submit your application by Tuesday, April 8, 2014.
The Boot Camp will be open for the Beta class to begin their studies on April 13.
Part 2 of the Boot Camp is still in development and its Beta period will be announced later.
We're still pecking away like little Woody Woodpeckers writing unit lessons, making screencasts, creating quizzes, working from sun up to moon rise to get Part 1 of the Samurai Appliance Tech Boot Camp ready to unleash on an unsuspecting and woefully unprepared world by April 13. Yep, that's our deadline so picked because it's right before Holy Week. Seemed like a good place for a deadline.
Meanwhile, as promised in my last post, I've prepared a little morsel of the course which you are invited to sample. The purpose of this sample is not so much to give you a peek into the course content, although it does that, but rather to give you an idea of the look and feel of the course. If you're not familiar with online learning, this may help give you an idea of what it's like. To take the sample course, Kommen zie hither, bitte.
The other important part of the course, which you won't see unless you're enrolled, is the forum where you can ask questions and get help on the units you're working on that are giving you trouble. Between the quizzes and the forums, Samurai Appliance Tech Boot Camp is the web's premiere interactive appliance repair learning experience.
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