Furnace troubleshooting

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

While your Lennox® HVAC equipment cannot chat with you, it possesses a method to communicate a furnace error.

Its control panel has a set of LED lights that can show a fault code. Based on the fault, your heating system may show solid or flashing lights.

While there are certain simple HVAC repairs you can do without an expert, most tasks are best left to HVAC technicians. When your heating system will not start or give heat, call Bell Air Conditioning Inc. at 254-307-9572 for experienced furnace repair in Belton.

Our experts will swiftly determine and handle the failure, even if you don’t have a Lennox furnace. We can fix all types or models—and get the heat reintroduced to your residence quickly.


What Does the Blinking Light on My Heater Mean?

Your furnace relies on lights to flash code when it requires repairs. It also works this system to let you know it’s running properly.

Correct function consists of:

  • Simultaneous slow flash—heater working correctly.
  • Both lights flash fast—furnace is starting to call for heat.

If you notice a lone light blinking slowly and the other going on and off fast, your furnace might be experiencing a low flame signal. This can take place even when your heater is heating correctly. It indicates the flame sensing rod might be dirty or in the bad spot on the burner. Call us at 254-307-9572 for help.

Here are several other of the most common faults for Lennox heating systems.

Heating System Refuses to Kick On

Here are some of the light patterns you could notice when your heat won’t turn on or keep heating. Most of these problems need to be taken care of by a specialist, for instance from Bell Air Conditioning Inc..

  1. The duo of LED lights aren’t lit. This indicates your heating system might not have electricity. Go to the breaker box to make sure the furnace fuse has not tripped. You should reset the fuse if it’s in the “off” position. If it immediately turns off after you reset it, don’t try to reset it again and call us at 254-307-9572.
  2. A single light is unchanging and the other is flickering slowly. This implies the flame rollout switch is may be not working right. The part is a critical safety mechanism that assists in stopping fires and carbon monoxide. You shouldn’t try to handle this problem on your own.
  3. A single light is flickering quickly and the other is flashing slowly. This often indicates power polarity has been reversed. Your heater could have a wiring fault that requires expert assistance from Bell Air Conditioning Inc..
  4. All lights are flickering slowly. This means your furnace’s blower motor probably isn’t working. This part distributes heated air from the heating system into your rooms. We can assist in pinpointing what’s causing an issue with this piece.
  5. An individual light is blinking slowly and the other is blinking fast. This means your heating system might have low voltage or a short circuit. Call our experts at 254-307-9572 for assistance.
  6. One light is blinking on, on and off while the other flashes on, off, on. This indicates there might be a problem with your heater’s control panel or wiring. Bell Air Conditioning Inc. can locate the problem and take care of it.
  7. The pair of lights display alternate slow flashes. This indicates your heater may have a flame problem. There might be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 254-307-9572 for support.
  8. A single light blinks slowly while the other remains steady. This usually signifies your HVAC system’s limit switch is not working. The switch prevents your heating system from getting too hot. Get in touch with the experts at Bell Air Conditioning Inc. for assistance.

Heating System Blower Operates But No Warm Air

Here’s what might be at fault when you observe your heating system’s blower fan working, but you aren’t getting any warm air.

  • Both lights display alternating quick blinks. This indicates your furnace ignitor might be broken. This part lights energy in your furnace to create heat and should be repaired by a technician from Bell Air Conditioning Inc..

Turn to Us for Skilled Furnace Repair

When you need to get your heating system in working order quickly, depend on the experts at Bell Air Conditioning Inc.. Our techs will repair the error without delay and have your rooms feeling cozy again in no time. Call us at 254-307-9572 or contact us online to schedule an appointment today.

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