While your Lennox® HVAC equipment isn’t able to speak to you, it does have a procedure to tell you about a furnace error.

Its motherboard has twin LED lights that can share a fault code. Subject to the problem, your furnace may use continuous or flashing lights.

While there are some simple heating repairs you can finish on your own, the majority of tasks are best taken care of by HVAC technicians. When your furnace refuses to turn on or provide warmth, call Van Haaften Plumbing & Heating at 641-628-3621 for experienced furnace repair in Pella.

Our technicians will quickly determine and repair the problem, even if you don’t have a Lennox heating system. We can repair all types or models—and get the heat returned to your home quickly.

What Does the Flashing Light on My Furnace Mean?

Your heater relies on lights to flash code when it requires repairs. It also uses this system to tell you it’s working like it should.

Regular heating consists of:

  • Concurrent slow flash—heater working correctly.
  • Simultaneous fast flash—heater is initiating the call for heat.

If you realize that a single light flashing slowly and the other going on and off fast, your heating system might have a low flame signal. This can occur even when your heater is heating properly. It means the flame sensing rod may have buildup or in the incorrect spot on the burner. Call us at 641-628-3621 for help.

Here are several other of the most routine faults for Lennox HVAC systems.

Furnace Won’t Start

Here are a few of the light patterns you may see when your heating system refuses to or keep heating. The majority of these problems need to be repaired by an expert, like one from Van Haaften Plumbing & Heating.

  1. The duo of LED lights are off. This means your heater might not be receiving power. Look at the breaker box to confirm the furnace fuse is not flipped. Try resetting the fuse if it’s in the “off” area. If it immediately turns off following a reset, don’t touch the breaker and contact us at 641-628-3621.
  2. A single light is stable and the other is blinking slowly. This signifies the flame rollout switch is may be malfunctioning. The component is an essential safety device that assists in avoiding fires and carbon monoxide. You shouldn’t attempt to take care of this malfunction yourself.
  3. A single light is flashing quickly and the other is blinking slowly. This often indicates power polarity has been reversed. Your heater may have a wiring issue that calls for professional assistance from Van Haaften Plumbing & Heating.
  4. The pair of lights are flickering slowly. This indicates your heater’s blower motor probably isn’t working. This component distributes hot air from the heating system into your house. We can help in determining what’s causing an issue with this component.
  5. One light is flashing slowly and the other is flickering quickly. This means your heating system may have low voltage or a short circuit. Contact our technicians at 641-628-3621 for assistance.
  6. One light is flickering on, on, off while the other blinks on, off, on. This indicates there could be an issue with your HVAC system’s motherboard or wiring. Van Haaften Plumbing & Heating can find the error and fix it.
  7. Both lights show every other slow blinks. This indicates your HVAC equipment may have a flame error. There could be a problem with its gas supply, gas valve or ignitor control. Call us at 641-628-3621 for support.
  8. A single light flashes slowly while the other stays solid. This often indicates your heating system’s limit switch is malfunctioning. The switch prevents your HVAC equipment from overheating. Reach out to the specialists at Van Haaften Plumbing & Heating for support.

Furnace Blower Works But No Warm Air

Here’s what may be broken when you notice your heater’s blower fan working, but you aren’t receiving any heated air.

  • Both lights are giving alternate fast flashes. This signifies your furnace ignitor may not be working. This component kindles gas in your heater to produce warmth and should be serviced by an expert from Van Haaften Plumbing & Heating.

Turn to Us for Professional Furnace Repair

When you have to have your heating system fixed without delay, depend on the technicians at Van Haaften Plumbing & Heating. Our pros will repair the error without delay and have your space feeling cozy again in no time. Get in touch with us at 641-628-3621 or contact us online to schedule an appointment now.