Furnace troubleshooting

Most Frequent Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® furnace isn’t able to chat with you, it possesses a process to get your attention when there’s a furnace error.

Its control board has a set of LED lights that can show a fault code. Subject to the issue, your heating system might display continuous or flashing lights.

Though there are some elementary HVAC adjustments you can complete yourself, the majority of tasks are best taken care of by experts. When your furnace will not start or provide heated air, reach out to Wolfe & Sons Heating and Cooling at 614-451-0846 for skilled furnace repair in Columbus.

Our specialists will quickly spot and fix the issue, even if you don’t have a Lennox heater. We can fix any brands or makes—and get the heat returned to your home without delay.


What Does the Blinking Light on My Furnace Mean?

Your heater relies on lights to flash code when it requires repairs. It also engages this system to relay it’s operating like it should.

Regular operation includes:

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

If you see a lone light going on and off slowly and the other flashing fast, your heating system might be experiencing a low flame signal. This can occur even when your heater is running like it should. It signifies the flame sensing rod could need to be cleaned or in the incorrect location on the burner. Call us at 614-451-0846 for support.

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

Furnace Won’t Start

Here are many of the light patterns you might see when your heater refuses to or stay on. The majority of these problems have to be repaired by an expert, for instance from Wolfe & Sons Heating and Cooling.

  1. The pair of LED lights aren’t lit. This signifies your heating system might not be receiving power. Check the breaker box to confirm the heater fuse hasn’t tripped. Try resetting the fuse if it has moved into the “off” area. If it immediately turns off after you reset it, don’t try to reset it again and get in touch with us us at 614-451-0846.
  2. One light is solid and the other is flickering slowly. This implies the flame rollout switch is probably malfunctioning. The switch is a critical safety device that helps in stopping fires and carbon monoxide. You shouldn’t seek to repair this issue without professional help.
  3. A single light is flickering rapidly and the other is flickering slowly. This typically indicates power polarity has been transposed. Your heater could have a wiring problem that calls for professional assistance from Wolfe & Sons Heating and Cooling.
  4. All lights are blinking slowly. This indicates your furnace’s blower motor possibly isn’t operating. This piece circulates warm air from the heating system into your space. We can aid in determining what’s causing a problem with this piece.
  5. One light is flickering slowly and the other is blinking fast. This means your HVAC system may have low voltage or a short circuit. Call our professionals at 614-451-0846 for help.
  6. One light is flashing on, on and off while the other blinks on, off, on. This signifies there could be trouble with your heating system’s control panel or wiring. Wolfe & Sons Heating and Cooling can locate the fault and handle it.
  7. The duo of lights show alternate slow flashes. This indicates your heater likely has a flame problem. There might be a problem with its gas supply, gas valve or ignitor control. Call us at 614-451-0846 for support.
  8. A single light flickers slowly while the other is steady. This typically signifies your HVAC system’s limit switch is open. The switch prevents your HVAC equipment from overheating. Contact the pros at Wolfe & Sons Heating and Cooling for support.

Heater Blower Works But No Warmth

Here’s what might be broken when you notice your furnace’s blower fan working, but you aren’t gaining any warm air.

  • The duo of lights display every other fast blinks. This indicates your furnace ignitor could be broken. This piece lights fuel in your heater to create heat and should be fixed by a specialist from Wolfe & Sons Heating and Cooling.

Turn to Us for Expert Furnace Repair

When you need to have your heating system in working order fast, turn to the specialists at Wolfe & Sons Heating and Cooling. Our pros will handle the error without delay and have your space feeling relaxing again in a short time. Call us at 614-451-0846 or contact us online to get an appointment now.

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