While your Lennox® heating system isn’t able to talk to you, it possesses a way to get your attention when there’s a furnace error.

Its motherboard has twin LED lights that can show a fault code. Based on the problem, your furnace may show solid or flashing lights.

Although there are a few basic furnace fixes you can take care of without an expert, many fixes are best handled by HVAC technicians. When your heater will not kick on or give heated air, get in touch with Kohles & Bach Heating & Cooling at 515-278-2900 for expert furnace repair in Des Moines.

Our specialists will swiftly determine and handle the issue, even if you don’t use a Lennox heater. We can service all types or configuration—and get the warmth returned to your home quickly.

What Does the Flashing Light on My Heater Mean?

Your heating system depends on lights to flash code when it is malfunctioning. It also works this system to tell you it’s operating correctly.

Regular heating involves:

  • Concurrent slow flash—heating system heating properly.
  • Both lights flash fast—furnace is starting to call for heat.

If you notice a solitary light going on and off slowly and the other flashing rapidly, your heating system might have a low flame signal. This can take place even when your heater is heating correctly. It indicates the flame sensing rod could be dirty or in the incorrect area on the burner. Call us at 515-278-2900 for assistance.

Here are a few other of the most common errors for Lennox HVAC systems.

Heating System Won’t Start

Here are many of the light sequences you could observe when your heater won’t turn on or keep running. The bulk of these errors must be fixed by an expert, such as one from Kohles & Bach Heating & Cooling.

  1. All LED lights are off. This signifies your heating system might not have electricity. Find the breaker box to confirm the heating system fuse hasn’t flipped. You should reset the fuse if it is in the “off” area. If it instantly flips after you reset it, don’t try to reset it again and contact us at 515-278-2900.
  2. One light is stable and the other is flashing slowly. This implies the flame rollout switch is may be open. The switch is an essential safety device that assists in preventing fires and carbon monoxide. You shouldn’t try to handle this issue yourself.
  3. An individual light is blinking rapidly and the other is flashing slowly. This typically signifies power polarity has been reversed. Your heater might have a wiring fault that needs specialized assistance from Kohles & Bach Heating & Cooling.
  4. Both lights are blinking slowly. This means your heating system’s blower motor probably isn’t operating. This piece moves hot air from the HVAC system into your space. We can assist in determining what’s wrong with this part.
  5. One light is flashing slowly and the other is flashing rapidly. This means your heater may have low voltage or a short circuit. Contact our specialists at 515-278-2900 for support.
  6. One light is flashing on, on, off while the other blinks on, off, on. This indicates there could be a fault with your heating system’s control panel or wiring. Kohles & Bach Heating & Cooling can determine the error and fix it.
  7. Both lights display alternate slow flickers. This signifies your heating system possibly has a flame problem. There may be a problem with its gas supply, gas valve or ignitor control. Call us at 515-278-2900 for support.
  8. An individual light flashes slowly while the other is solid. This typically means your heating system’s limit switch is not working. The switch keeps your HVAC system from becoming too warm. Reach out to the professionals at Kohles & Bach Heating & Cooling for assistance.

Furnace Blower Runs But No Heat

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

  • The duo of lights are showing every other rapid flickers. This indicates your furnace ignitor may not be working. This piece ignites fuel in your furnace to create warmth and should be repaired by an expert from Kohles & Bach Heating & Cooling.

Trust Us for Skilled Furnace Repair

When you have to get your heater in working order without delay, trust the technicians at Kohles & Bach Heating & Cooling. Our technicians will fix the fault right away and have your space feeling relaxing again in no time. Reach out to us at 515-278-2900 or contact us online to schedule an appointment right away.