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Why Does My Furnace Not Run More Than A Few Minutes?

Why Does My Furnace Not Run More Than A Few Minutes?

Are you getting used to listening to your furnace’s familiar vibration, only to have it shut off within a few minutes? Many furnaces tend to repeat this process over and over. When your furnace turns on and then turns off after a few minutes, you must identify the cause and look for reliable professionals for HVAC repair near me so that you can keep your place warm during the cold winter months.

A furnace running only for a few minutes usually occurs due to short cycling where a heating system repeatedly starts and shuts down.

What Causes The Furnace To Turn On And Off Continuously?

There are numerous reasons why your furnace may be short cycling, so let’s take a closer look at the causes and consequences.

  • A Clogged Or Defective Flame Sensor

If your furnace shuts down after a few minutes, it’s likely due to a faulty or unhygienic flame sensor. This crucial component intends to monitor the gas burner. Also, when a flame sensor cannot detect the burner, the furnace runs for a few moments before shutting down and restarting.

Homeowners can contact professional HVAC companies in Orlando to inspect their furnace, or they can wash the flame sensor themselves with a lightly erosive pad. If cleaning it does not resolve the issue, the flame sensor may need to be changed entirely.

  • Airflow Remains Restricted

When your furnace starts and stops, it could be an indication that you have insufficient airflow. If there is inadequate airflow, the heat exchanger in the furnace will frequently heat up. This problem is more likely to occur if the heating unit is in a congested storage area.

If there is a blockage in the inlet pipe leading from the outside into your home, it might be the reason for short cycling. When the exchanger reaches its maximum temperature, the furnace automatically shuts down after a few minutes.

Resolving the problem of low airflow necessitates a multi-pronged approach. To begin, ensure that all the filters of your furnace are clean. Also, get the filters replaced every few months to ease the burden on your HVAC system and ensure that fresh air comes filtered into your home.

  • Pressure Switch Failure

Another common cause of your furnace turning on and off after a few minutes is a faulty pressure switch. The pressure button should close with airflow from the draft inducer machine through the burner to indicate that combustion is safe. If the pressure switch fails, the ignition does not get notified that it is safe to proceed.

  • Control Board Failure

The control board has overall responsibility for providing power to all of your furnace’s internal workings. When this component is faulty or broken, the heating system immediately begins and shuts down.

There will be no power source to the ignition system, which keeps the heating system operating for extended periods if the control board is not running accurately.

If you are lately experiencing problems with your furnace, it’s time to look for a professional for HVAC repair near me. At AmeriTech Air Conditioning and Heating, we can help you save money on your furnace repair. To book our expert services, call us now at (407) 743-7106.