Why Does My Heating System Keep Turning Off?
Your furnace is equipped with several safety switches that constantly monitor internal conditions to protect your heating system from damage—and keep you safe. If something goes wrong, these switches will shut down the system to prevent a potential failure or hazard. What Happens When a Safety Switch Is Triggered? If a safety switch detects a problem, your furnace will shut down. After a few minutes, the control board will attempt to restart the system. If the issue is still present—or if a switch itself is malfunctioning—the furnace will shut down again. This cycle may repeat until the underlying problem is fixed. What Do Safety Switches Monitor? The safety switches in your furnace are keeping a close eye on these critical components: ✅ Airflow Low airflow can lead to overheating in the heat exchanger. Several issues can reduce airflow, including: Dirty air filters Dust buildup on the blower wheel Closed or blocked air vents Obstructions in the ductwork A technician can inspect these components and restore proper airflow to keep your furnace running efficiently. ✅ Flame Sensor This sensor ensures that a flame is present whenever fuel is flowing into the ignition chamber. If fuel enters without a flame, it can...
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