LIQUID LINE RESTRICTION TROUBLESHOOTING GUIDE (for TXV systems – R-410A or R-22) If you’re seeing HIGH subcooling HIGH superheat LOW suction pressure… 99% chance you have a liquid line restriction. Here’s how to prove it fast. Common Symptoms • Suction pressure way too low • Superheat 30–60°F • Subcooling 20–40°F • Liquid line cold in one spot, warmer after • Weak airflow out of vents • Compressor super quiet (starved) Quick Checks Before You Tear Anything Apart 1. Dirty filter? Change it 2. Dir
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I discuss the replacement of a TXV and how to plan this out! Learn more about HVAC procedures with our 2nd edition book: https://a.co/d/6anaOob . . . #amazon #2nd #txv #meteringdevice #replacement #component #tool #hvac #hvacr #hvactraining #hvacservice #procedure #repair #thermostatic #expansion #valve #expansionvalve #acservice #acservicetech #TXV | AC Service Tech LLC
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let's properly diagnose the TXV 1st let's feed the TXV enough liquid refrigerant so it can control the superheat for us. We need a full column of liquid AT the TXV inlet, not just outside. This is why I love sight glasses but also a service port at the inlet of the TXV so I can measure subcooling there. restrictions such as clogged filter driers, kinks, double driers, uninsulated liquid lines across a hot attic can all cause this to be an issue. 2nd enough liquid pressure. make sure the liquid r
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Struggling with TXV (Thermostatic Expansion Valve) diagnosis? This video dives into the essential techniques every HVAC technician needs to master for accurate system troubleshooting. Watch on YouTube or directly on the HVAC School website here: https://buff.ly/EszxdQy | HVAC School
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Expansion Valve (TXV) is a key component in Package AC. A faulty or defective TXV can cause cooling issues, low performance, and high pressure problems. In this video, you will learn symptoms of a bad TXV, how to check it, and tips for repair & replacement. | ASR Service Center
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Is airflow the real culprit behind your TXV issues? In our latest video, we're talking troubleshooting and signs to look for to help figure out the why behind your failed TXV. Check it out on our YouTube page or directly on the HVAC School website here: https://buff.ly/Ggk98Lu | HVAC School
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