Appliantology Live Dojo, Saturday, 4/27/2024 @10 AM ET

We're going to be looking at the tech sheet for a Frigidaire dishwasher and asking specific questions. Problem statement: not drying. Try to answer these questions beforehand and we'll go through them during the Dojo. 

1. What is our load of interest (LOI)?
2. How does our LOI get its power supply? 
3. What two electrical measurements will we make to determine the status of the LOI circuit? 
4. What electrical specifications for our LOI will we use to evaluate our electrical measurements? 

Here's the tech sheet: 

Just now, Koi Guy said:

I'll be there with answers. Maybe not correct answers, but answers nonetheless.  

I think you'll nail it. This should be easy stuff for experienced techs. We've had requests from newer techs to practice reading tech sheets and picking out details. @Son of Samurai will be posting a few other tech sheets with study questions. We'll have a troubleshooting party! 

Another tech sheet for us to practice on. This one is another Frigidaire but a refrigerator this time. Model number LGHB2867PF7A. Tech sheet is below. Here are the study questions: 

1. What kind of power supply does the augur motor require?
2. When the board supplies one side of the power supply to the augur motor, where does that wire travel before it makes it to the motor itself? 
3. What's a reasonable test to do to confirm that the augur motor is capable of running with a proper power supply? 
4. If you find the augur motor is not getting voltage, where is your next stop looking for the missing voltage? 
5. If the cube crush solenoid is getting voltage, does that mean that the auger motor should be getting voltage, too? Why or why not?

This one is a Whirlpool WRT311FZDW01 refrigerator that uses the tech sheet posted below. Questions we'll be going over: 

1. You've got a no-defrost complaint. What's your LOI?
2. What is the spec you'll use to determine whether or not the defrost heater is actually heating properly?
3. Where will you place your probes to measure the voltage supply to the heater? 
4. If volts are in spec, what's your next test to confirm proper heater operation?
5. Entering service mode on this model is wonky and hit or miss (at least in my experience). Suppose you can't enter service mode no matter what you do. What's another good way to test the defrost heater?