Fixing Error Code 229 on Your Lennox® Furnace

Noticing 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 best to have 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 well-equipped to fix a furnace error like yours.

We want you to be completely content 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 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 Malfunctions

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

Your furnace will indicates something’s not right 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 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 generate the error, so your Stevenson Service ExpertsExpert will look at other parts of your furnace first.

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

You can expect 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 mended, reach out to the Experts at Stevenson Service Experts to work out the fault code and take care of the problem.

Call us at or schedule an appointment online today.

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