While your Lennox® furnace cannot talk to you, it does have a method to get your attention when there’s a furnace error.

Its motherboard has two LED lights that can share a fault code. Subject to the fault, your heater could display solid or flashing lights.

Although there are certain basic HVAC adjustments you can complete without an expert, many fixes are best handled by HVAC technicians. When your heating system will not turn on or deliver heated air, contact Lakeside Heating & Air at 509-284-4265 for experienced furnace repair in Chelan and Wenatchee.

Our experts will rapidly identify and take care of the breakdown, even if you don’t have a Lennox heater. We can repair any types or configuration—and get the heat returned to your residence quickly.

What Does the Blinking Light on My Heater Mean?

Your furnace relies on lights to flash code when it is malfunctioning. It also works this system to let you know it’s heating correctly.

Normal operation includes:

  • Simultaneous slow flash—heating system operating correctly.
  • Both lights flash fast—heater is beginning to call for heat.

If you see a solitary light flashing slowly and the other flashing quickly, your heater may have a low flame signal. This can take place even when your heater is working correctly. It means the flame sensing rod could have buildup or in the incorrect location on the burner. Contact us at 509-284-4265 for help.

Here are some of the most common issues for Lennox HVAC systems.

Heater Will Not Turn On

Here are some of the light sequences you may see when your furnace will not or keep heating. Most of these issues must be taken care of by a professional, such as one from Lakeside Heating & Air.

  1. The duo of LED lights are off. This signifies your heater might not have electricity. Examine the breaker box to ensure the heater fuse isn’t triggered. Try resetting the fuse if it’s in the “off” area. If it instantly turns off following a reset, don’t try to reset it again and call us at 509-284-4265.
  2. A single light is unchanging and the other is flashing slowly. This implies the flame rollout switch is may be not working right. The switch is a critical safety mechanism that aids in avoiding fires and carbon monoxide. You shouldn’t seek to handle this fault without professional help.
  3. One light is flashing fast and the other is flashing slowly. This likely signifies power polarity has been reversed. Your heating system may have a wiring problem that calls for expert support from Lakeside Heating & Air.
  4. The duo of lights are flickering slowly. This means your heater’s blower motor possibly isn’t working. This part sends hot air from the heating system into your house. We can aid in pinpointing what’s causing an issue with this part.
  5. One light is flickering slowly and the other is blinking quickly. This indicates your heater could have insufficient voltage or a short circuit. Call our technicians at 509-284-4265 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This indicates there might be a fault with your heater’s control panel or wiring. Lakeside Heating & Air can pinpoint the error and take care of it.
  7. The pair of lights are using every other slow flashes. This indicates your HVAC system likely has a flame failure. There may be an issue with its gas supply, gas valve or ignitor control. Reach out to us at 509-284-4265 for help.
  8. A single light flickers slowly while the other stays steady. This usually signifies your heater’s limit switch is not working. The switch stops your HVAC equipment from becoming too warm. Get in touch with the professionals at Lakeside Heating & Air for support.

Heater Blower Operates But No Warm Air

Here’s what could be broken when you hear your heating equipment’s blower fan working, but you aren’t getting any heated air.

  • The pair of lights are giving alternate quick flashes. This indicates your furnace ignitor could not be in working order. This part ignites fuel in your furnace to produce warmth and should be fixed by a technician from Lakeside Heating & Air.

Depend on Us for Skilled Furnace Repair

When you have to have your heating system fixed quickly, trust the specialists at Lakeside Heating & Air. Our technicians will fix the issue without delay and have your house feeling comfortable again in no time. Contact us at 509-284-4265 or contact us online to request an appointment now.