Repairing Error Code 229 on Your Lennox® Furnace

Getting 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 better to let a pro like one from Stevenson Service Experts in Columbus handle repairing or replacing this part. Our technicians are ACE certified, which means they’re well-equipped to fix a furnace error like the one you’re experiencing.

We want you to be completely 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 use less energy. These switches also guarantee your furnace runs safely and vents excess gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Fails

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

Your HVAC will communicate 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 announces a fault code.

Estimated Repair Cost for Furnace Error Code 229

A blocked vent or a draft can also trigger the error, so your Stevenson Service ExpertsExpert will look at 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 expect 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 fixed, turn 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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