Module 4: Electrical Systems and Controls

Course Content

Wiring Diagrams
5 Topics
1 Quiz
What Is a Wiring Diagram?
Why Wiring Diagrams Are Important
Common Information Found on Wiring Diagrams
Common Electrical Symbols
Reading a Wiring Diagram
Wiring Diagrams – Knowledge Check
Ladder Diagrams
5 Topics
1 Quiz
What Is a Ladder Diagram?
Parts of a Ladder Diagram
Reading a Ladder Diagram
Ladder Diagrams in HVAC Systems
Why Ladder Diagrams Are Important
Ladder Diagrams – Knowledge Check
Schematics
5 Topics
1 Quiz
What Is an Electrical Schematic?
Understanding Schematic Symbols
Following Current Through a Schematic
Using Schematics for HVAC Troubleshooting
Comparing Electrical Diagrams
Schematics – Knowledge Check
Low Voltage Controls
5 Topics
1 Quiz
What Are Low-Voltage Controls?
Why HVAC Systems Use 24 Volts
Components of a Low-Voltage Control System
Common Low-Voltage Thermostat Terminals
How a Low-Voltage Control Circuit Works
Low Voltage Controls – Knowledge Check
Thermostat Operation
5 Topics
1 Quiz
What Is a Thermostat?
Types of Thermostats
Understanding Thermostat Terminals
How a Thermostat Controls Heating and Cooling
Common Thermostat Problems
Thermostat Operation – Knowledge Check
Control Circuits
5 Topics
1 Quiz
What Is a Control Circuit?
Cooling Control Circuit Sequence
Heating Control Circuit Sequence
Safety Devices in Control Circuits
Troubleshooting Control Circuits
Control Circuits – Knowledge Check
Electronically Commutated Motors (ECM)
5 Topics
1 Quiz
What Is an ECM Motor?
How an ECM Motor Works
PSC vs. ECM Motors
Advantages and Common Problems
Troubleshooting an ECM Motor
Electronically Commutated Motors (ECM) – Knowledge Check
Motor Protection Devices
5 Topics
1 Quiz
Why Motor Protection Is Important
Common Motor Protection Devices
What Causes Motor Overload?
How Motor Protection Devices Work
Troubleshooting Motor Protection Devices
Motor Protection Devices – Knowledge Check
Final Quiz
Module 4 – Final Examination