Clearing Error Code 229 on Your Lennox® Furnace

Noticing 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 professional like one from Bob Brown Service Experts in Tempe work on 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 absolutely content with our furnace repair in Tempe. 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 be more efficient. These switches also ensure your furnace runs safely and vents extra gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Malfunctions

Your low pressure switch may not be functioning properly if your furnace inducer motor begins in high speed and high ignition, then slows down and shifts into low-fire mode about 30 seconds after.

Your furnace will demonstrate something’s not right 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 observe 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 Bob Brown Service Experts professional will look at other parts of your furnace first.

The price 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 need a new low-fire pressure switch.

Trust the Experts at Bob Brown Service Experts

When you need to have your furnace fixed, reach out to the Experts at Bob Brown Service Experts to work out the fault code and take care of the situation.

Call us at 623-243-4517 or schedule an appointment online today.