During tests to discover why a refrigeration compressor is running continuously, it is determined that the refrigerated space temperature is slightly above normal without ever reaching the desired minimum temperature. Suction and discharge pressures are normal for the corresponding box temperature. In this situation, what should you suspect?
Official USCG Answer & Rule Citation
Correct Answer: Option B — leaking door gaskets
Compromised, cracked, or worn door gaskets allow continuous ambient air infiltration into the refrigerated box. The thermal load matches the continuous refrigeration capacity, keeping box temperatures slightly elevated while system pressures remain normal for that load.
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