While your Lennox® heating system cannot speak to you, it does have a procedure to communicate a furnace error.

Its control board has a set of LED lights that can display a fault code. Based on the fault, your furnace could use solid or flashing lights.

Although there are a few simple HVAC repairs you can take care of yourself, many fixes are best taken care of by HVAC technicians. When your heater will not turn on or put out heat, contact Custom Air Systems Inc at 772-247-2283 for skilled furnace repair in Port St. Lucie.

Our specialists will rapidly detect and repair the problem, even if you don’t use a Lennox heater. We can fix any types or configuration—and get the comfort returned to your residence fast.

What Does the Flashing Light on My Furnace Mean?

Your heater depends on lights to flash code when it isn’t working right. It also works these lights to let you know it’s heating properly.

Normal heating consists of:

  • Simultaneous slow flash—heating system running correctly.
  • Concurrent fast flash—heater is beginning to call for heat.

If you realize that a single light flashing slowly and the other going on and off quickly, your furnace may have a low flame signal. This can take place even when your heater is running like it should. It indicates the flame sensing rod might be dirty or in the wrong location on the burner. Call us at 772-247-2283 for help.

Here are a few other of the most common faults for Lennox furnaces.

Heating System Will Not Turn On

Here are many of the light arrangements you may see when your furnace will not or keep running. The majority of these problems must be repaired by an expert, such as one from Custom Air Systems Inc.

  1. The duo of LED lights aren’t lit. This signifies your heater might not be receiving power. Look at the breaker box to ensure the furnace fuse isn’t tripped. You should reset the fuse if it is in the “off” spot. If it immediately trips following a reset, don’t touch the breaker and get in touch with us us at 772-247-2283.
  2. One light is stable and the other is flashing slowly. This shows the flame rollout switch is possibly malfunctioning. The switch is an essential safety mechanism that helps in preventing fires and carbon monoxide. You shouldn’t try to handle this fault without professional help.
  3. An individual light is flashing rapidly and the other is blinking slowly. This likely signifies power polarity has been transposed. Your heater might have a wiring issue that requires expert assistance from Custom Air Systems Inc.
  4. Both lights are blinking slowly. This means your heating system’s blower motor probably isn’t operating. This piece distributes heated air from the furnace into your home. We can assist in determining what’s causing a problem with this part.
  5. An individual light is flickering slowly and the other is flashing fast. This means your heating system may have not enough voltage or a short circuit. Contact our specialists at 772-247-2283 for support.
  6. One light is flickering on, on, off while the other blinks on, off, on. This means there could be a malfunction with your HVAC system’s control panel or wiring. Custom Air Systems Inc can locate the fault and fix it.
  7. The pair of lights show alternating slow flashes. This signifies your HVAC system possibly has a flame failure. There may be trouble with its gas supply, gas valve or ignitor control. Call us at 772-247-2283 for assistance.
  8. A single light blinks slowly while the other stays steady. This often signifies your heater’s limit switch is experiencing an error. The switch prevents your heating system from overheating. Reach out to the professionals at Custom Air Systems Inc for help.

Heater Blower Works But No Warm Air

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

  • The duo of lights are showing alternate quick blinks. This indicates your furnace ignitor might not be in working order. This component lights gas in your heater to produce warmth and should be serviced by a technician from Custom Air Systems Inc.

Trust Us for Skilled Furnace Repair

When you have to get your heater in working order quickly, depend on the experts at Custom Air Systems Inc. Our techs will handle the error right away and have your residence feeling comfortable again in a short time. Get in touch with us at 772-247-2283 or contact us online to get an appointment right away.