TXV Diagnosis: Superheat, Subcool & Split Temps

Struggling with TXV (Thermostatic Expansion Valve) diagnosis? This comprehensive video breaks down the essential techniques every HVAC technician needs to master for accurate system troubleshooting. What You'll Learn: Key Diagnostic Rules: When subcool readings allow TXV diagnosis The critical superheat thresholds (normal vs. problematic) How to use split temperatures to confirm your diagnosis Troubleshooting: How to test if a TXV is actually stuck vs. slightly restricted The hand-on-bulb test technique for verification Distinguishing between TXV failure and compressor slipping Open TXV scenarios and what they reveal Real-World Applications: Compressor slipping vs. TXV overfeed diagnosis Airflow issues that mimic TXV problems When adding refrigerant helps vs. when it doesn't Tips Covered: Why superheat alone isn't enough for diagnosis Using subcool readings as your diagnostic gateway The importance of split temperature verification Heat pump mode testing for stuck TXVs This isn't just theory - we break down real scenarios you'll encounter in the field and give you the systematic approach to get it right every time. HVAC school playlist with all our TXV videos:    • TXV   HVAC school podcasts on TXV: https://www.hvacrschool.com/podcasts/... https://www.hvacrschool.com/podcasts/... https://www.hvacrschool.com/podcasts/... https://www.hvacrschool.com/podcasts/... #HVAC #TXV #Superheat #Subcool #HVACDiagnosis #HVACTraining #HVACTech #troubleshooting Read all the tech tips, take the quizzes, and find our handy calculators at https://www.hvacrschool.com/ or the HVAC School Mobile App on the Google Play Store (https://hvacrschool.com/play-store) or App Store (https://hvacrschool.com/app-store).