Practice question

During an A/C performance test on a school bus, ambient is 90°F and the center duct discharge reads 65°F. This indicates:

  1. A faulty thermostat only
  2. Normal cooling performance
  3. Poor cooling performance requiring further diagnosis
  4. An overcharged system only

Answer: C — Poor cooling performance requiring further diagnosis

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Practice more: ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam →