While your Lennox® heating system cannot talk to you, it possesses a process to tell you about a furnace error.

Its motherboard has two LED lights that can share a fault code. Depending on the problem, your heating system might use steady or flashing lights.

Though there are various simple heating adjustments you can complete on your own, most fixes are best taken care of by the professionals. When your heating system refuses to start or give warmth, get in touch with Fairfield Heating & Cooling at 740-331-4331 for expert furnace repair in Lancaster.

Our technicians will speedily identify and repair the issue, even if you don’t own a Lennox heating system. We can repair any brands or models—and get the warmth returned to your residence quickly.

What Does the Flashing Light on My Heater Mean?

Your heater uses lights to flash code when it requires repairs. It also engages this setup to let you know it’s heating correctly.

Correct function involves:

  • Simultaneous slow flash—heater operating like it should.
  • Both lights flash fast—heater is beginning to call for heat.

If you realize that a lone light flashing slowly and the other going on and off rapidly, your heater may have a low flame signal. This can take place even when your furnace is operating correctly. It indicates the flame sensing rod may need to be cleaned or in the wrong area on the burner. Call us at 740-331-4331 for help.

Here are some of the most routine problems for Lennox HVAC systems.

Heating System Refuses to Start

Here are many of the light patterns you might observe when your heater refuses to or keep heating. The bulk of these errors must be taken care of by a technician, for instance from Fairfield Heating & Cooling.

  1. All LED lights aren’t lit. This indicates your heater might not have power. Go to the breaker box to make sure the furnace fuse hasn’t flipped. You should reset the fuse if it is in the “off” area. If it immediately flips after a subsequent reset, don’t try to reset it again and contact us at 740-331-4331.
  2. An individual light is unchanging and the other is flashing slowly. This shows the flame rollout switch is possibly malfunctioning. The switch is an essential safety tool that aids in preventing fires and carbon monoxide. You shouldn’t attempt to fix this issue on your own.
  3. A single light is blinking rapidly and the other is flickering slowly. This often indicates power polarity has been reversed. Your heater could have a wiring problem that calls for expert help from Fairfield Heating & Cooling.
  4. All lights are blinking slowly. This signifies your furnace’s blower motor likely isn’t running. This component sends warm air from the heater into your house. We can help in pinpointing what’s causing an issue with this part.
  5. One light is blinking slowly and the other is blinking rapidly. This means your HVAC system might have not enough voltage or a short circuit. Call our specialists at 740-331-4331 for assistance.
  6. One light is flashing on, on, off while the other flickers on, off, on. This means there may be a malfunction with your heating system’s control board or wiring. Fairfield Heating & Cooling can determine the error and take care of it.
  7. Both lights show every other slow blinks. This indicates your heating system possibly has a flame error. There might be a problem with its gas supply, gas valve or ignitor control. Call us at 740-331-4331 for support.
  8. A single light flashes slowly while the other is steady. This usually indicates your HVAC system’s limit switch is experiencing an error. The switch stops your HVAC system from becoming too warm. Get in touch with the specialists at Fairfield Heating & Cooling for assistance.

Furnace Blower Runs But No Heat

Here’s what might be wrong when you observe your heating equipment’s blower fan working, but you aren’t gaining any warmth.

  • Both lights display alternate fast blinks. This indicates your furnace ignitor could not be working. This piece kindles energy in your heater to produce warm air and should be repaired by an expert from Fairfield Heating & Cooling.

Depend on Us for Expert Furnace Repair

When you have to have your heating system repaired quickly, depend on the professionals at Fairfield Heating & Cooling. Our pros will fix the error right away and have your space feeling cozy again in a short time. Contact us at 740-331-4331 or contact us online to get an appointment today.