Liquid Line Restriction on AC Unit Explained Found Bad TXV

In this HVAC Video, I show how to tell if you have a liquid line restriction such as a clogged metering device, clogged filter drier, or clogged strainer screen. In this case, the TXV bulb lost some of its refrigerant pressure. I measure saturated temperatures, line temps, superheat, and subcooling to determine the problem. I put the determined that the TXV had lost part of its bulb charge but not all of it so when I put the bulb in warm water, the superheat lowered. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety. Follow us on Facebook! https://www.facebook.com/acservicetech Check out our newest full articles at https://www.acservicetech.com/articles Try our new quizzes! Do you have what it takes? https://www.acservicetech.com/quizzes My Paperback, E-Book, Workbook, Quick Reference Cards: https://www.acservicetech.com/store E-Book: https://play.google.com/store and search "AC Service Tech" My Paperback and Quick Cards: https://www.amazon.com/shop/acservicetech Support the Channel: https://www.patreon.com/acservicetech Tool List: https://www.amazon.com/shop/acservicetech Tools Used in the Video: Yellow Jacket Refrigerant Gauge Set http://amzn.to/2aenwTq Refrigerant hoses with valves http://amzn.to/2aBumVI Fieldpiece ST4 Dual Temp Meter http://amzn.to/2wc1ME3 Electrical Diagnosis Tools: UEI DL389 Multimeter http://amzn.to/2xAdaJf UEI DL479 Multimeter with temp sensor http://amzn.to/2jtsUbJ Magnet Jumpers- https://amzn.to/2PyKPQZ Alligator Jumpers- https://amzn.to/2PxqJXn Irwin Wire Stripper/Cutter/Crimper http://amzn.to/2dGTj2V Vacuum Tools: JB 6 CFM Vacuum Pump - http://amzn.to/2nqbvo8 CPS 4 CFM Vacuum Pump - https://amzn.to/2DxgPwY Appion Valve Core Removal Tool - http://amzn.to/2uYr8WL Appion Blue 3/8" to 1/4" Vacuum Hose - http://amzn.to/2uYlVyc Appion Red 3/8" to 1/4" Vacuum Hose - http://amzn.to/2uYg6Ro Yellow Jacket 1/4" by 1/4" 3’ hose - http://amzn.to/2umtcod Appion 1/4" by 1/4" and 3/8” hose - https://amzn.to/2Zyxzx9 Uniweld 1/4" by 1/4" 2’ hose - https://amzn.to/2GFov1Y CPS Vacuum Micron Gauge - http://amzn.to/2v1nM3O JB Vacuum Pump Oil - http://amzn.to/2mGrlXy Checking the Charge Tools: Yellow Jacket Refrigerant Gauge Set http://amzn.to/2aenwTq Refrigerant hoses with valves http://amzn.to/2aBumVI Yellow Jacket Gauge set & hoses https://amzn.to/2vLVkV9 Yellow Jacket 4 Port Manifold w Hoses https://amzn.to/2BkuGIq Digital Refrigerant Scale http://amzn.to/2b9oXYl Ratcheting Service Wrench http://amzn.to/2dGV4Nh FieldpieceSMAN360 Digital Manifold Set https://amzn.to/2BdoaD4 FieldpieceSMAN460 Digital Manifold Set https://amzn.to/2nB4Fe6 Compact Ball Valve for Refrigerant Hose https://amzn.to/2KUisW8 QuickDisconnect 90 for refrigerant hose https://amzn.to/2MMtVcg RectorSeal Bubble Gas Leak Detector http://amzn.to/2ckWACn Fieldpiece ST4 Dual Temp Meter http://amzn.to/2wc1ME3 Fieldpiece Bead K Type Temp Sensor https://amzn.to/2DBwKfs Fieldpiece Wet Bulb Temp Sensor https://amzn.to/2RRI7Tw Fieldpiece TC24 Temp Clamp https://amzn.to/2qHLyjZ Flaring Tools: Yellow Jacket Flaring Tool - https://amzn.to/2OBxGlM Spin Flaring Bits 1/4", 3/8", 1/2", 5/8", 3/4"- https://amzn.to/31BCs8Z Yellow Jacket Flaring Tool with Set Depth - https://amzn.to/2QIKsQH Yellow Jacket Torque Wrench - https://amzn.to/2NRR68Q Uniweld Swage and Flare Kit- https://amzn.to/2T55jyn Nylog - https://amzn.to/2MLJcch Ridgid Tubing Cutter - https://amzn.to/2DnjjR1 Wolverine Tube Reamer - https://amzn.to/2QGLyMV Swaging Tools: Manual Copper Tube Swage/Expander- https://amzn.to/2WRPa1M Spin Swaging Bits 1/4" to 7/8" for the Drill- https://amzn.to/2YQwwqS Uniweld Hydraulic Swaging Tool- https://amzn.to/2MlrI8m Uniweld Swage and Flare Kit- https://amzn.to/2T55jyn Uniweld Hammer Swage kit- https://amzn.to/2CzWMMU Uniweld 3/4" Hammer Swage- https://amzn.to/2CzXsSs Uniweld 7/8" Hammer Swage- https://amzn.to/2Mja5WE Uniweld Multi-Size Hammer Swage- https://amzn.to/2T3Cx1b Brazing Tools: Air Acetylene Torch setup - http://amzn.to/2aQalsb 15% Silver Brazing Rods - http://amzn.to/2gVLyLc Ameriflame Oxy Acetylene Torch Setup #1  Tip - https://amzn.to/2SRm3JF Nitrogen Regulator - http://amzn.to/2bXdR5f Uniweld NitroVue Flow Regulator - https://amzn.to/2GnsaAo Uniweld Nitrogen Flow Meter - http://amzn.to/2brvoBg Uniweld Soft Flame Sweating Torch Setup for Acetylene - https://amzn.to/2DyzRD8 Stay Brite #8 Silver Bearing Solder and Flux - https://amzn.to/2XIDJsY Aluminum Braze Rods - https://amzn.to/2IGNMu Refrigerant Leak Detection Tool: Accutrak VPE Ultrasonic Leak Detector https://amzn.to/2nFYKVe Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal.

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