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1.4.1: Hands-On HVAC Troubleshooting

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    🔹 Problem 1: AC is running but not cooling.
            ✅ Step 1: Check thermostat settings—is it set to "Cool"?
            ✅ Step 2: Inspect air filter—is it clogged?
            ✅ Step 3: Examine condenser coil—is it covered in dirt?
            ✅ Step 4: Measure refrigerant pressure—is it too low?

     

    🔹 Problem 2: Furnace is blowing cold air.
            ✅ Step 1: Check the thermostat mode—is it set to "Heat"?
            ✅ Step 2: Inspect the pilot light (for gas furnaces).
            ✅ Step 3: Look at the air filter—a dirty filter can restrict airflow.

     

    🔧 Hands-On Exercise:
            ✅ Find your HVAC air filter and check its condition—if it’s dirty, replace it.
            ✅ Adjust the thermostat by 5 degrees and see how long it takes for the system to respond.

    1.4.1: Hands-On HVAC Troubleshooting is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.