Furnace troubleshooting

Top Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® heater cannot talk to you, it does have a procedure to communicate a furnace error.

Its motherboard has double LED lights that can display a fault code. Subject to the failure, your heating system may show continuous or flashing lights.

While there are certain simple HVAC adjustments you can finish yourself, most tasks are best left to HVAC technicians. When your heater won’t turn on or give warm air, call E.B. Air, LLC at 979-335-4262 for professional furnace repair in East Bernard.

Our specialists will swiftly identify and take care of the malfunction, even if you don’t own a Lennox heater. We can fix whichever types or models—and get the heat returned to your house without delay.


What Does the Flashing Light on My Heater Mean?

Your heater uses lights to flash code when it needs to be repaired. It also uses this system to relay it’s working properly.

Regular heating involves:

  • Both lights flash slowly—heating system operating properly.
  • Concurrent fast flash—heater is initiating the call for heat.

If you notice a solitary light flashing slowly and the other going on and off fast, your furnace could be having a low flame signal. This can take place even when your heater is working like it should. It signifies the flame sensing rod may need to be cleaned or in the incorrect area on the burner. Contact us at 979-335-4262 for assistance.

Here are a few other of the most common issues for Lennox heating systems.

Furnace Will Not Turn On

Here are many of the light patterns you might notice when your heater will not or keep heating. The bulk of these errors must be fixed by a technician, for instance from E.B. Air, LLC.

  1. The duo of LED lights aren’t lit. This indicates your heating system might not have electricity. Examine the breaker box to make sure the heater fuse isn’t tripped. Try resetting the fuse if it’s in the “off” area. If it instantly flips after a subsequent reset, don’t try to reset it again and get in touch with us us at 979-335-4262.
  2. A single light is continuous and the other is blinking slowly. This means the flame rollout switch is may be open. The switch is a critical safety guard that assists in preventing fires and carbon monoxide. You shouldn’t seek to handle this malfunction on your own.
  3. A single light is flashing quickly and the other is flickering slowly. This often indicates power polarity has been inverted. Your heater might have a wiring fault that needs expert aid from E.B. Air, LLC.
  4. The pair of lights are blinking slowly. This means your heater’s blower motor probably isn’t operating. This part moves warm air from the furnace into your space. We can help in pinpointing what’s causing a problem with this piece.
  5. A single light is flickering slowly and the other is flickering rapidly. This indicates your HVAC system could have not enough voltage or a short circuit. Call our experts at 979-335-4262 for support.
  6. One light is flashing on, on and off while the other flickers on, off, on. This indicates there might be an issue with your HVAC system’s control panel or wiring. E.B. Air, LLC can find the problem and handle it.
  7. The duo of lights display alternating slow flashes. This indicates your heater likely has a flame issue. There could be trouble with its gas supply, gas valve or ignitor control. Call us at 979-335-4262 for help.
  8. A single light flashes slowly while the other remains continuous. This often indicates your HVAC system’s limit switch is open. The switch prevents your furnace from overheating. Contact the specialists at E.B. Air, LLC for help.

Heater Blower Runs But No Warmth

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

  • The duo of lights display every other fast flashes. This indicates your furnace ignitor could not be in working order. This piece ignites fuel in your heating system to make heat and should be serviced by an expert from E.B. Air, LLC.

Depend on Us for Professional Furnace Repair

When you need to have your furnace fixed without delay, depend on the technicians at E.B. Air, LLC. Our techs will take care of the problem right away and have your residence feeling comfortable again soon. Contact us at 979-335-4262 or contact us online to schedule an appointment today.

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