While your Lennox® HVAC equipment cannot speak to you, it possesses a process to tell you about a furnace error.

Its control board has two LED lights that can display a fault code. Based on the malfunction, your heater could display continuous or flashing lights.

Although there are certain basic furnace adjustments you can take care of without an expert, most tasks are best left to the professionals. When your heating system won’t turn on or put out heated air, contact Kohles & Bach Heating & Cooling at 515-278-2900 for professional furnace repair in Des Moines.

Our specialists will swiftly determine and take care of the problem, even if you don’t use a Lennox heater. We can service whichever kinds or models—and get the warmth reintroduced to your house fast.

What Does the Flickering Light on My Heating System Mean?

Your heating system depends on lights to flash code when it requires repairs. It also works this system to relay it’s operating like it should.

Normal heating consists of:

  • Concurrent slow flash—heater working properly.
  • Both lights flash fast—heater is starting to call for heat.

If you see a lone light flashing slowly and the other flashing quickly, your furnace may have a low flame signal. This can happen even when your heating system is working properly. It indicates the flame sensing rod may have buildup or in the wrong spot on the burner. Call us at 515-278-2900 for assistance.

Here are some of the most common faults for Lennox furnaces.

Heater Will Not Kick On

Here are many of the light patterns you could see when your furnace won’t turn on or keep running. The majority of these errors have to be fixed by a professional, like one from Kohles & Bach Heating & Cooling.

  1. All LED lights are off. This means your heating system might not be receiving power. Find the breaker box to ensure the heating system fuse is not tripped. Try resetting the fuse if it’s in the “off” position. If it promptly turns off following a reset, don’t try to reset it again and call us at 515-278-2900.
  2. A single light is continuous and the other is flickering slowly. This signifies the flame rollout switch is possibly open. The component is a critical safety device that helps in stopping fires and carbon monoxide. You shouldn’t attempt to handle this fault without professional help.
  3. An individual light is flickering rapidly and the other is flickering slowly. This typically signifies power polarity has been inverted. Your furnace might have a wiring error that requires expert support from Kohles & Bach Heating & Cooling.
  4. All lights are blinking slowly. This means your heating system’s blower motor possibly isn’t running. This piece sends warm air from the heater into your home. We can assist in figuring out what’s wrong with this part.
  5. An individual light is flickering slowly and the other is flickering rapidly. This means your heating system may have low voltage or a short circuit. Get in touch with our technicians at 515-278-2900 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This indicates there might be a malfunction with your heater’s control panel or wiring. Kohles & Bach Heating & Cooling can locate the issue and fix it.
  7. The duo of lights are using every other slow flashes. This means your HVAC system likely has a flame issue. There may be trouble with its gas supply, gas valve or ignitor control. Reach out to us at 515-278-2900 for assistance.
  8. A single light flashes slowly while the other remains continuous. This often indicates your HVAC equipment’s limit switch is malfunctioning. The switch stops your HVAC equipment from becoming too warm. Call the experts at Kohles & Bach Heating & Cooling for support.

Furnace Blower Runs But No Heat

Here’s what could be at fault when you hear your heater’s blower fan on, but you aren’t gaining any heated air.

  • The pair of lights are showing every other fast flickers. This means your furnace ignitor could not be working. This part ignites energy in your heater to produce warmth and should be fixed by an expert from Kohles & Bach Heating & Cooling.

Depend on Us for Expert Furnace Repair

When you need to get your heating system in working order fast, trust the professionals at Kohles & Bach Heating & Cooling. Our technicians will take care of the issue right away and have your residence feeling cozy again in no time. Reach out to us at 515-278-2900 or contact us online to get an appointment today.