Top Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® heater can’t chat with you, it possesses a way to get your attention when there’s a furnace error.

Its control panel has two LED lights that can share a fault code. Based on the problem, your heater may show steady or flashing lights.

Although there are some simple heating repairs you can take care of without an expert, the majority of tasks are best left to experts. When your heating system will not turn on or provide heat, contact Branson HVAC, LLC at (417) 544-4430 for professional furnace repair in Kirbyville and the Branson area.

Our experts will rapidly identify and fix the breakdown, even if you don’t own a Lennox furnace. We can fix whichever brands or configuration—and get the warmth returned to your residence without delay.

What Does the Flashing Light on My Heater Mean?

Your heater depends on lights to flash code when it is malfunctioning. It also works these lights to relay it’s working properly.

Regular heating includes:

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

If you see a single light blinking slowly and the other flashing quickly, your heating system might be having a low flame signal. This can happen even when your heater is heating like it should. It means the flame sensing rod might be dirty or in the wrong location on the burner. Contact us at (417) 544-4430 for support.

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

Heater Will Not Start

Here are many of the light sequences you may see when your heating system refuses to or keep operating. The bulk of these issues have to be repaired by a professional, such as one from Branson HVAC, LLC.

1. Both LED lights are extinguished. This indicates your furnace might not have power. Go to the breaker box to confirm the heater fuse has not flipped. Attempt to reset the fuse if it has moved into the “off” area. If it instantly trips after you reset it, don’t touch the breaker and contact us at (417) 544-4430.
2. One light is continuous and the other is flickering slowly. This shows the flame rollout switch is possibly open. The part is a critical safety guard that assists in stopping fires and carbon monoxide. You shouldn’t seek to repair this malfunction yourself.
3. An individual light is flickering quickly and the other is blinking slowly. This usually indicates power polarity has been reversed. Your furnace could have a wiring issue that calls for expert help from Branson HVAC, LLC.
4. The pair of lights are flickering slowly. This means your furnace’s blower motor possibly isn’t operating. This component distributes warm air from the furnace into your residence. We can aid in pinpointing what’s causing an issue with this component.
5. One light is flickering slowly and the other is flashing rapidly. This means your heating system could have insufficient voltage or a short circuit. Call our experts at (417) 544-4430 for assistance.
6. One light is flickering on, on and off while the other flashes on, off, on. This means there may be a malfunction with your heater’s control board or wiring. Branson HVAC, LLC can find the fault and handle it.
7. The pair of lights display every other slow flickers. This means your HVAC system likely has a flame error. There might be a problem with its gas supply, gas valve or ignitor control. Get in touch with us at (417) 544-4430 for assistance.
8. An individual light blinks slowly while the other stays continuous. This typically means your heating system’s limit switch is open. The switch prevents your HVAC system from getting too hot. Get in touch with the professionals at Branson HVAC, LLC for assistance.

Furnace Blower Runs But No Warmth

Here’s what could be at fault when you hear your heater’s blower fan running, but you aren’t gaining any heated air.

• The duo of lights are giving every other fast blinks. This signifies your furnace ignitor might not be in working order. This piece kindles gas in your heater to produce warm air and should be repaired by a technician from Branson HVAC, LLC.

Depend on Us for Expert Furnace Repair

When you need to have your heater in working order quickly, depend on the technicians at Branson HVAC, LLC. Our pros will take care of the problem without delay and have your home feeling relaxing again in a short time. Call us at (417) 544-4430 or contact us online to schedule an appointment now.