Clearing Error Code 229 on Your Lennox® Furnace

Noticing error code 229 on your Lennox® furnace?

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

It’s best to let an Expert like one from Stevenson Service Experts in Columbus finish repairing or replacing this part. Our technicians are ACE certified, which means they’re ready to fix a furnace error like yours.

We want you to be completely 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 help the system to run at different speeds—and work more efficiently. These switches also guarantee your furnace runs safely and vents extra gases from the heat exchanger.

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

Your low pressure switch may not be functioning correctly if your furnace inducer motor begins in high speed and high ignition, then loses speed and changes into low-fire mode about 30 seconds after.

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

You may see fast flashes or an alternating slow flash as it tells you a fault code.

Estimated Repair Cost for Furnace Error Code 229

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

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

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

Trust the Experts at Stevenson Service Experts

When you need to have your furnace mended, reach out to 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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