The limit switch on your furnace in Des Plaines, IL plays an important role, as it can shut off the system whenever necessary to prevent overheating. When your furnace limit switch malfunctions, you may experience problems with heating and short cycling.
Furnace Doesn’t Turn On
If you can’t turn on your furnace, you may have a faulty limit switch. The system might incorrectly sense that the furnace has become too hot, potentially because of damaged components or bad wiring. In some cases, this can prevent the furnace from turning on at all.
Home Doesn’t Get Warm Enough
With a broken limit switch, you may be lucky enough to turn your system on, but that luck may run out quickly. After a short period, the limit switch may signal the furnace to turn off, even though the temperature in your home hasn’t risen significantly. Poor airflow and dirty switch contacts can sometimes cause this type of situation by interfering with the limit switch’s ability to sense the correct temperature.
Furnace Frequently Turns On and Off
When a furnace turns on and off repeatedly, its components can wear down quickly, so you’ll want to prevent this from happening whenever possible. A malfunctioning limit switch can cause this issue, signaling the system to turn off prematurely. If your thermostat then tells the heater to turn on again, the system may turn on and off in short cycles.
A problem with your heater’s limit switch can lead to issues with heating and short cycling. If you’ve noticed that your furnace struggles to heat your home or that it frequently turns on and off, you may want to have an HVAC company inspect your limit switch. For help with a furnace repair in Des Plaines, IL, call Besco Air Inc. Heating & Cooling.
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