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HVAC Technician Troubleshooting Questions

📅 Jan 10, 2026 | ✅ VERIFIED ANSWER

The Diagnostic Process

Employers need problem solvers. They will give you a scenario like "The AC is freezing up" and ask for your diagnostic steps.

Scenario Answers

  • Frozen Coil: "I would check for airflow issues first (dirty filter), then check refrigerant levels for a leak."
  • No Power: "I start at the breaker, then check the disconnect, then the capacitor and contactor."

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