While your Lennox® furnace can’t speak to you, it does have a process to get your attention when there’s a furnace error.

Its control board has double LED lights that can show a fault code. Depending on the problem, your furnace could use solid or flashing lights.

While there are various elementary HVAC repairs you can finish yourself, most services are best left to the professionals. When your heater refuses to start or give warmth, call Kapaun & Brown at 641-812-2028 for expert furnace repair in Marshalltown.

Our experts will speedily identify and take care of the malfunction, even if you don’t use a Lennox heating system. We can fix whichever brands or makes—and get the comfort reintroduced to your residence quickly.

What Does the Flashing Light on My Heating System Mean?

Your heating system uses lights to flash code when it is malfunctioning. It also engages this setup to relay it’s working correctly.

Correct function involves:

  • Concurrent slow flash—heating system working properly.
  • Concurrent fast flash—furnace is initiating the call for heat.

If you realize that a single light going on and off slowly and the other blinking fast, your furnace may be experiencing a low flame signal. This can happen even when your heating system is working like it should. It indicates the flame sensing rod could have buildup or in the bad location on the burner. Reach out to us at 641-812-2028 for assistance.

Here are several other of the most routine problems for Lennox heating systems.

Furnace Will Not Start

Here are some of the light arrangements you might see when your furnace refuses to or keep operating. Most of these issues need to be taken care of by a technician, such as one from Kapaun & Brown.

  1. All LED lights are extinguished. This indicates your HVAC system might not have electricity. Find the breaker box to ensure the heater fuse is not flipped. Attempt to reset the fuse if it is in the “off” area. If it promptly turns off after you reset it, don’t touch the breaker and call us at 641-812-2028.
  2. An individual light is unchanging and the other is blinking slowly. This shows the flame rollout switch is may be malfunctioning. The switch is an essential safety tool that assists in avoiding fires and carbon monoxide. You shouldn’t try to take care of this malfunction without professional help.
  3. A single light is flashing fast and the other is flickering slowly. This often indicates power polarity has been inverted. Your furnace might have a wiring problem that needs specialized aid from Kapaun & Brown.
  4. Both lights are flashing slowly. This indicates your heating system’s blower motor likely isn’t operating. This component distributes hot air from the heater into your residence. We can assist in figuring out what’s wrong with this component.
  5. One light is blinking slowly and the other is flashing fast. This signifies your heater might have not enough voltage or a short circuit. Contact our experts at 641-812-2028 for support.
  6. One light is flashing on, on, off while the other blinks on, off, on. This means there may be trouble with your heater’s control board or wiring. Kapaun & Brown can locate the fault and handle it.
  7. The duo of lights are using alternate slow blinks. This indicates your HVAC system likely has a flame problem. There could be an issue with its gas supply, gas valve or ignitor control. Call us at 641-812-2028 for help.
  8. A single light flashes slowly while the other stays continuous. This usually means your HVAC system’s limit switch is experiencing an error. The switch keeps your HVAC system from becoming too warm. Get in touch with the experts at Kapaun & Brown for assistance.

Heater Blower Runs But No Warmth

Here’s what might be wrong when you observe your heater’s blower fan running, but you aren’t receiving any warm air.

  • Both lights are showing every other fast flickers. This signifies your furnace ignitor could not be in working order. This part kindles gas in your heating system to make heat and should be repaired by a specialist from Kapaun & Brown.

Depend on Us for Professional Furnace Repair

When you need to get your heater in working order quickly, trust the experts at Kapaun & Brown. Our pros will handle the fault without delay and have your rooms feeling cozy again in no time. Get in touch with us at 641-812-2028 or contact us online to request an appointment now.