Electrical problems always require using the schematic to troubleshoot, that high-dollar skill that all appliance techs need to build. So today we’re going to take a look at the schematic for a Bosch dishwasher.
Now, Bosch schematics can seem tricky at first because of how Bosch labels things in the schematic. But always remember: electricity works the same everywhere. Doesn’t matter what manufacturer made the appliance or wrote the schematic, electrons behave the same.
That means that if we know how to do circuit analysis on any appliance, with a little deciphering of Bosch lingo, we can see what’s going on here.
The first step of course in any circuit analysis is to identify the LOI (Load Of Interest). This shows you what circuit you need to then trace out and see what else might be interfering with electron flow and causing the problem in the first place.
To see this type of circuit analysis in action on a Bosch dishwasher, watch the video below:
As you can see, this video teaches some fundamentals of circuit analysis. Such as the first step of tracing a circuit being 1: how do I get line and 2: how do I get neutral?
By finding the LOI and tracing out the circuit, you can then zero in on the components in that circuit that are causing the error code in the first place. And that is how master techs fix electrical problems in appliances.
Get up to speed on troubleshooting modern, computer-controlled dishwashing and laundry appliances with the Master Samurai Tech Advanced Washer, Dryer, and Dishwasher Repair Training course.