Fixing Error Code 229 on Your Lennox® Furnace

Seeing 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 better to allow a pro like one from Service Experts Heating & Air Conditioning in Cleveland finish 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 completely 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 multiple 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 excess gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Malfunctions

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

Your HVAC will demonstrate 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 trigger the error, so your Service Experts Heating & Air Conditioning technician will investigate 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 need a new low-fire pressure switch.

Trust the Experts at Service Experts Heating & Air Conditioning

When you need to have your furnace mended, reach out to the Experts at Service Experts Heating & Air Conditioning to decipher the fault code and take care of the issue.

Call us at 440-252-1375 or schedule an appointment online today.