How HVAC Refrigerant Pressure Switches Work & Troubleshooting!

I Show How to Read the Cut-In and Cut-Out Pressures of High and Low Limit Refrigerant Pressure Switches used in HVAC. I Show How the Refrigerant Pressure Switches Work and How to Troubleshoot Them by Reading the Refrigerant Gauges and Measuring Resistance with a Multimeter. Supervision is needed by a licensed HVACR Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.

Tool List-

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How the Defrost Board Works-
Defrost Board Wiring-
DFT Sensor Testing-
Pressure Switch for Fan Control-

Here are some of the Tools I use:
UEI DL479 Multimeter with temp sensor
Appion Valve Core Removal Tool
Blue Vapor Yellow Jacket Gauge-
Red Liquid Yellow Jacket Gauge-
Quick Coupler for the Gauges-
JB Test Gauge High Side-
JB Test Gauge Low Side-
Yellow Jacket Refrigerant Gauge Set
Refrigerant hoses with valves
Yellow Jacket Gauge set & hoses
Yellow Jacket 4 Port Manifold w Hoses
FieldpieceSMAN360 Digital Manifold Set
FieldpieceSMAN460 Digital Manifold Set
Compact Ball Valve for Refrigerant Hose
QuickDisconnect 90 for refrigerant hose
JB 6 CFM Vacuum Pump
Appion Blue 3/8″ to 1/4″ Vacuum Hose
Appion Red 3/8″ to 1/4″ Vacuum Hose
Yellow Jacket 1/4″ by 1/4″ hose
CPS Vacuum Micron Gauge
Supco Vacuum Micron Gauge
RectorSeal Bubble Gas Leak Detector
UEI DL389 Multimeter
Fieldpiece ST4 Dual Temp Meter
Air Acetylene Torch setup
15% Silver Brazing Rods
Nitrogen Regulator
Nitrogen Flow Meter
Digital Refrigerant Scale
Accutrak VPE Ultrasonic Leak Detector
Imperial Kwik Charge 535-C
FieldpieceSDMN6 Dual Manometer Pump
Supco Magnet Jumpers
2 pairs of alligator clips-
JB Vacuum Pump Oil
General Tools digital Psychrometer
Fieldpiece SDP2 Digital Psychrometer
Ratcheting Service Wrench
Appion G5 Twin Recovery Pump
Irwin Wire Stripper/Cutter/Crimper

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