Fundamentals of HVAC
Suction line temperature - Vapor Saturation
What is Superheat?
0 volts at control board with a good fuse and all safeties intact
What is a bad transformer?
Pumps refrigerant through the system
What is the compressor?
Changing states from liquid to gas
What is evaporation?
Changes direction of refrigerant?
What is a reversing valve?
Liquid Saturation - Liquid line temperature
What is superheat?
120 volts on 1 leg at condenser, 0 volts on 2nd leg
What is a bad fuse?
Causes "flashing" into evaporator coil
What is a metering device?
Changing states from liquid to solid
What is freezing?
Typically energized to produce heat in defrost mode
What are heat strips?
Erratic pressures and Oscillation in compressor
What is Non-Condensables in system?
Typical voltage of a Heat Pump Air Handler
What is 240 volts?
Forces heat out of outdoor unit
What is the condenser fan motor?
Changing states from gas to liquid
What is condensation?
Forces reversing valve to "shift"
What is refrigerant pressure?
Suction pressure and Discharge pressure equalized while system is running
What is a Non-Pumping compressor?
The breaker for outdoor unit constantly trips on call for cooling
What is a grounded compressor?
Allows refrigerant to flow only one way
What is a check valve?
Also known as CFC's
What are Chlorofluorocarbons?
Prompts system to go into defrost mode
What is the outdoor coil temp sensor?
The state of refrigerant before it enters metering device
What is liquid?
Condenser motor not running but works when blade is spun manually
What is a bad capacitor?
Absorbs heat from within the occupied space
What is the evaporator coil?
Also known as HFC's
What are Hydrofluorocarbons?
The wires typically assigned in a heat pump system
What is R, C, Y, G, O/B, W2?