Clearing Error Code 229 on Your Lennox® Furnace

Seeing error code 229 on your Lennox® furnace?

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

It’s best to allow a professional like one from McElroy Service Experts in Grand Island finish repairing or replacing this part. Our technicians are NATE certified, which means they’re well-equipped to fix a furnace error like the one you’re experiencing.

We want you to be absolutely content with our furnace repair in Grand Island. 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 work more efficiently. 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 operating properly if your furnace inducer motor begins in high speed and high ignition, then loses speed and enters into low-fire mode about 30 seconds afterward.

Your furnace will communicate something’s wrong with a red flash from its indicator light, which it uses to exhibit 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 reports a fault code.

Estimated Repair Cost for Furnace Error Code 229

A blocked vent or a draft can also create the error, so your McElroy Service Experts professional 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 remedy it.

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

Turn to the Experts at McElroy Service Experts

When you need to have your furnace repaired, contact the Experts at McElroy Service Experts to figure out the fault code and take care of the situation.

Call us at 308-210-4398 or schedule an appointment online today.