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  1. May 16, 2023 · Set your thermostat to kick the heater on when it restarts. On your thermostat or control unit, turn the heat up so that the furnace will kick on when you restart it. In other words, if it is 70 °F (21 °C), set your thermostat to at least 75 °F (24 °C). If it is 80 °F (27 °C), set your thermostat to 85 °F (29 °C).

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    • Incorrect Installation. One possible reason for your furnace not turning on could be an incorrect installation of the new filter. It is essential to ensure that the filter is correctly aligned and securely in place.
    • Clogged Air Ducts. Another common issue that can prevent your furnace from turning on is clogged air ducts. Over time, dust, debris, and pet hair can accumulate in the ducts, obstructing the airflow.
    • Tripped Circuit Breaker or Blown Fuse. It is worth checking if a tripped circuit breaker or a blown fuse is causing your furnace to malfunction. A sudden power surge or electrical issue can trip the circuit breaker or blow a fuse, cutting off the power supply to your furnace.
    • Faulty Thermostat. A faulty thermostat can also prevent your furnace from turning on after changing the filter. Check if your thermostat is set to the desired temperature and mode.
  2. Replacing your furnace or AC air filter is actually pretty simple to do. I'll guide you through all that you need to know to do the job right. #furnacefilter...

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  3. Apr 4, 2019 · Why Did My Furnace Turn Itself Off? Watch our comprehensive furnace fixing yourself guide and read it here - https://blog.reviewhomewarranties.com/furnace-no...

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  4. Jun 26, 2024 · Leave the breaker (s) off for at least 10 minutes while the system is off and “rebooting.”. After 10 minutes have elapsed, go back to the breaker box and flip the HVAC breaker (s) back on. Now that power is restored to your furnace, go back to the thermostat, make sure it is set to “heat,” and then turn the temperature above the room ...

  5. Apr 26, 2024 · Look for the vents where the air enters into the furnace system to locate the filter near either the air return duct or the entrance to the blower chamber. 4. Slide out the old filter and hold it up to the light. Use both hands to carefully pull the filter out for inspection.

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  7. Mar 24, 2023 · The first step is to check your furnace’s diagnostic light so you can figure out why your furnace is locked out. Here are the steps you should take when resetting your furnace: Check the diagnostic light. Turn the furnace power off. Relight the pilot light (if needed) Turn the furnace power back on.

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