Fixing 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 important to let a pro like one from Church Services in Houston handle repairing or replacing this part. Our technicians are NATE certified, which means they’re ready to fix a furnace error like this one.

We want you to be fully satisfied with our furnace repair in Houston. 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 work more efficiently. 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 operating properly if your furnace inducer motor begins in high speed and high ignition, then slows down and enters into low-fire mode about 30 seconds afterward.

Your system will communicate something’s not right with a red flash from its indicator light, which it uses to show 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 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 Church Services professional will check other parts of your furnace first.

The price to fix your furnace hinges on what’s wrong with it and how long it takes to remedy it.

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

Trust the Experts at Church Services

When you need to have your furnace repaired, reach out to the Experts at Church Services to figure out the fault code and take care of the issue.

Call us at 713-396-3760 or schedule an appointment online today.