Clearing Error Code 229 on Your Lennox® Furnace

Noticing error code 229 on your Lennox® furnace?

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

It’s best to allow an Expert like one from Strogen's Service Experts Heating & Air Conditioning in Rochester work on 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 happy with our furnace repair. 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 various pressure switches to allow the system to run at different speeds—and be more efficient. These switches also guarantee 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 working properly if your furnace inducer motor begins in high speed and high ignition, then weakens and shifts into low-fire mode about 30 seconds afterward.

Your furnace will communicate something’s amiss 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 notice 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 trigger the error, so your Strogen's Service Experts Heating & Air Conditioning professional will look at other parts of your furnace first.

The price to fix your furnace depends 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.

Turn to the Experts at Strogen's Service Experts Heating & Air Conditioning

When you need to have your furnace fixed, turn to the Experts at Strogen's Service Experts Heating & Air Conditioning to figure out the fault code and take care of the issue.

Call us at 603-923-4570 or schedule an appointment online today.