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Clearing Error Code 229 on Your Lennox® Furnace

Seeing error code 229 on your Lennox® furnace?

This indicates your furnace is ignited at high speed because its low pressure switch couldn’t close.

It’s better to have a pro like one from Stevenson Service Experts in Columbus finish repairing or replacing this part. Our technicians are ACE certified, which means they’re well-prepared to fix a furnace error like this one.

We want you to be fully satisfied with our furnace repair in Columbus. That’s why we back all of our work with a one-year 100% Satisfaction Guarantee.*

How a Low-Fire Pressure Switch Works

Two-stage furnaces have numerous pressure switches to allow the system to run at different speeds—and use less energy. These switches also make sure your furnace runs safely and vents excess gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Doesn’t Work

Your low pressure switch may not be functioning properly if your furnace inducer motor starts up in high speed and high ignition, then loses speed and shifts into low-fire mode about 30 seconds afterward.

Your system will demonstrate something’s wrong with a red flash from its indicator light, which it uses to show error codes. It has this red light to flash code, like Morse code.

You may observe fast flashes or an alternating slow flash as it announces a fault code.

Estimated Repair Cost for Furnace Error Code 229

A blocked vent or a draft can also create the error, so your Stevenson Service Expertsprofessional will investigate other parts of your furnace first.

The cost to fix your furnace hinges on what’s wrong with it and how long it takes to repair it.

You can anticipate to pay between $40 and $350 if you require a new low-fire pressure switch.

Rely on the Experts at Stevenson Service Experts

When you need to have your furnace mended, contact the Experts at Stevenson Service Experts to decipher the fault code and take care of the issue.

Call us at or schedule an appointment online today.

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