Repairing Error Code 229 on Your Lennox® Furnace

Getting error code 229 on your Lennox® furnace?

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

It’s important to allow a professional like one from San Antonio Air Service Experts in San Antonio work on repairing or replacing this part. Our technicians are NATE 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 San Antonio. 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 numerous pressure switches to allow the system to run at different speeds—and use less energy. These switches also make sure your furnace runs safely and vents extraneous gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Fails

Your low pressure switch may not be operating correctly if your furnace inducer motor begins in high speed and high ignition, then loses speed and changes into low-fire mode about 30 seconds later.

Your system will demonstrate something’s amiss 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 tells you a fault code.

Estimated Repair Cost for Furnace Error Code 229

A blocked vent or a draft can also generate the error, so your San Antonio Air Service Experts technician will check other parts of your furnace first.

The cost 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.

Turn to the Experts at San Antonio Air Service Experts

When you need to have your furnace mended, reach out to the Experts at San Antonio Air Service Experts to decipher the fault code and take care of the situation.

Call us at 210-570-9705 or schedule an appointment online today.