Clearing 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 didn’t close.

It’s important to let a professional like one from Broad Ripple Service Experts in Indianapolis handle repairing or replacing this part. Our technicians are ACE certified, which means they’re well-equipped to fix a furnace error like this one.

We want you to be completely content with our furnace repair in Indianapolis. 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 allow the system to run at different speeds—and be more efficient. 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 working correctly if your furnace inducer motor starts up in high speed and high ignition, then slows down and enters into low-fire mode about 30 seconds later.

Your furnace will indicates 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 notice fast flashes or an alternating slow flash as it reports a fault code.

Estimated Repair Cost for Furnace Error Code 229

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

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

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

Rely on the Experts at Broad Ripple Service Experts

When you need to have your furnace repaired, reach out to the Experts at Broad Ripple Service Experts to figure out the fault code and take care of the problem.

Call us at or schedule an appointment online today.

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