You know the story: a technician is called in to repair a computer-controlled refrigerator but doesn't understand how these systems work. Too often, they guess the expensive main control board is the problem and replace it only to see they still have the same problem. D'oh!
It’s time to stop guessing and start knowing what you’re doing!
Today's computer-controlled refrigerators are more complicated to troubleshoot and require technicians who have both analog and digital skills.
Instead of simple mechanical switches controlling the compressor and defrost system, modern high-tech refrigerators use thermistors to report temperature information to a single board computer which, in turn, makes programmed decisions about how long and how fast to make the compressor run, which evaporator coils to send the refrigerant to, evaporator fan motor speed, and frequency and duration of the defrost cycles.
These systems fail far more frequently than the sealed system and comprise the vast majority of service calls.
Although the basic thermodynamics of the refrigeration system itself are the same, today we’re often troubleshooting dual evaporator systems using three-way valves. Here again, most of the problems are control-related and not the sealed system itself.
In fact, if you can effectively troubleshoot the computer controls in a modern refrigerator, this will cover over 90% of your service calls on these units.
This is exactly what the Refrigerator Repair course at the Master Samurai Tech Academy teaches you to do.
You will learn:
- The principles of how refrigerators operate
- The common refrigerator problems you’ll see on the job
- Specialized troubleshooting and repair of single and dual evaporator refrigerators, split-phase and inverter-driven compressors
- A systems approach to troubleshooting modern refrigerators
- How the computer uses thermistors to read temperature and uses that information to control the refrigerator
- How inverters work and how the computer communicates to the inverter to control compressor operation
This course will make you a master troubleshooter of today’s computer-controlled refrigerators, and teach you the skills needed to repair the majority of repair scenarios. You’ll learn at your own pace and at your convenience with our online, video-based training.