The limit switch is an important part of the safety features of the furnace in your home in Jeffersontown, KY. It controls the blower, turning it on and off to prevent overheating or other furnace problems. Read on to learn about some signs that you could have a malfunctioning limit switch.
The Furnace Overheats
The limit switch’s job is to detect an overheating furnace, so its failure to do so could result in equipment damage or a fire hazard. An HVAC technician will need to take a look and repair your furnace, which may mean replacing the limit switch.
The Blower Runs Constantly
If your furnace is overheating, a constantly running blower suggests that the problem is a bad limit switch. The blower could continue running even if the switch does shut off the flame, which results in cool air coming out of the vents.
Your System is Short Cycling
This occurs when the furnace turns on and off in quick succession. The furnace ends up not being able to heat your home effectively. Several things could cause short cycling, but a bad limit switch is one of the common ones.
Your Furnace won’t Start Up
Modern furnaces have a feature that shuts them off completely if the limit switch breaks or otherwise malfunctions. When that happens, you can try a reset by leaving the furnace off for at least 30 seconds and then turning it back on. If that doesn’t work, then you’ll need an expert’s help.
We’ve been a family-owned and -operated company for decades. If you need to replace a limit switch or schedule preventive maintenance for your furnace, call us at Elder Heating and Air.
As a Trane Comfort Specialist, Elder Heating and Air takes pride in providing flat rate pricing and around-the-clock emergency service. Our work comes with a 100% satisfaction guaranteed, and we have a sizable truck fleet loaded with common repair parts.
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