Pressure Drops Below Manufacturer Thresholds Disable Most HVAC Cooling and Heating Cycles
https://precisionhvacrepairsacramento-licensed-sac-near-super-mark9096.talesignal.com/posts/matching-r-410a-specifications-makes-sure-your-unit-reaches-72-degree-temperature-targets-reliably
The number one problem with HVAC systems is refrigerant pressure falling below manufacturer diagnostic benchmarks, which prevents cooling or heating cycles from completing