Field answer
Direct answer
Low suction with high superheat often points toward a starved evaporator, which can come from restricted metering, restricted liquid line flow, low charge, or airflow conditions that must be separated carefully. Use the current equipment manual, code book, employer procedure, and qualified supervision before applying this on live work.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as HVAC service diagnostics and drill a smaller set before returning to mixed practice.
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