Fixing Error Code 229 on Your Lennox® Furnace

Seeing error code 229 on your Lennox® furnace?

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

It’s important to allow a professional like one from Stevenson Service Experts in Columbus work on repairing or replacing this part. Our technicians are ACE certified, which means they’re well-prepared to fix a furnace error like the one you’re experiencing.

We want you to be absolutely happy 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 multiple pressure switches to help the system to run at different speeds—and be more efficient. These switches also make sure your furnace runs safely and vents extraneous 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 enters into low-fire mode about 30 seconds later.

Your furnace will indicates something’s not right 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 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 create the error, so your Stevenson Service Expertsprofessional will check 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 plan to pay between $40 and $350 if you require a new low-fire pressure switch.

Trust the Experts at Stevenson Service Experts

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

Call us at or schedule an appointment online today.

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