While your Lennox® furnace isn’t able to speak to you, it has a process to tell you about a furnace error.

Its control board has two LED lights that can show a fault code. Depending on the issue, your heating system might use steady or flashing lights.

While there are some simple HVAC repairs you can take care of without an expert, most fixes are best taken care of by HVAC technicians. When your furnace will not start or deliver warmth, get in touch with House of Heating Incorporated at 715-384-3163 for professional furnace repair in Marshfield.

Our experts will speedily detect and fix the breakdown, even if you don’t use a Lennox heating system. We can repair all types or configuration—and get the heat reintroduced to your house quickly.

What Does the Flashing Light on My Furnace Mean?

Your heating system relies on lights to flash code when it requires repairs. It also uses these lights to let you know it’s operating like it should.

Regular heating consists of:

  • Simultaneous slow flash—heater running like it should.
  • Concurrent fast flash—heating system is initiating the call for heat.

If you realize that a lone light flashing slowly and the other flashing quickly, your furnace could have a low flame signal. This can take place even when your furnace is working correctly. It means the flame sensing rod might need to be cleaned or in the wrong location on the burner. Reach out to us at 715-384-3163 for support.

Here are some of the most common problems for Lennox heaters.

Heating System Won’t Turn On

Here are some of the light patterns you may notice when your heating system will not or keep heating. The bulk of these issues must be fixed by a specialist, such as one from House of Heating Incorporated.

  1. The duo of LED lights aren’t lit. This means your heater might not have electricity. Find the breaker box to confirm the furnace fuse has not tripped. Attempt to reset the fuse if it’s in the “off” area. If it instantly trips after you reset it, don’t try to reset it again and get in touch with us us at 715-384-3163.
  2. A single light is stable and the other is flashing slowly. This signifies the flame rollout switch is possibly not working right. The component is a critical safety device that aids in stopping fires and carbon monoxide. You shouldn’t attempt to handle this fault yourself.
  3. An individual light is blinking fast and the other is flickering slowly. This typically indicates power polarity has been reversed. Your heating system could have a wiring problem that calls for specialized aid from House of Heating Incorporated.
  4. Both lights are flickering slowly. This means your heating system’s blower motor probably isn’t working. This component moves hot air from the heater into your house. We can help in determining what’s causing a problem with this part.
  5. A single light is flickering slowly and the other is flashing fast. This signifies your heating system might have low voltage or a short circuit. Reach out to our experts at 715-384-3163 for assistance.
  6. One light is flashing on, on, off while the other flickers on, off, on. This means there may be an issue with your HVAC system’s control panel or wiring. House of Heating Incorporated can determine the fault and handle it.
  7. The pair of lights are using every other slow flashes. This signifies your heating system may have a flame failure. There might be trouble with its gas supply, gas valve or ignitor control. Reach out to us at 715-384-3163 for assistance.
  8. A single light blinks slowly while the other is steady. This often signifies your heating system’s limit switch is experiencing an error. The switch keeps your heater from getting too hot. Get in touch with the experts at House of Heating Incorporated for assistance.

Heating System Blower Runs But No Warmth

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

  • The pair of lights are showing alternate quick blinks. This means your furnace ignitor might not be in working order. This part kindles gas in your HVAC equipment to make warmth and should be repaired by a specialist from House of Heating Incorporated.

Trust Us for Skilled Furnace Repair

When you have to have your heating system in working order fast, turn to the specialists at House of Heating Incorporated. Our technicians will fix the fault without delay and have your space feeling cozy again in no time. Reach out to us at 715-384-3163 or contact us online to request an appointment today.