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 best to let a professional like one from Aramendia Plumbing, Heating and Air in San Antonio work on repairing or replacing this part. Our technicians are ACE certified, which means they’re well-prepared to fix a furnace error like this one.
We want you to be absolutely satisfied with our furnace repair in San Antonio. That’s why we back all of our work with a one-year 100% Satisfaction Guarantee.*
Two-stage furnaces have multiple pressure switches to help the system to run at different speeds—and use less energy. These switches also make sure your furnace runs safely and vents extra gases from the heat exchanger.
Your low pressure switch may not be operating right if your furnace inducer motor starts up in high speed and high ignition, then slows down and changes into low-fire mode about 30 seconds later.
Your furnace will communicate something’s wrong 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 notice fast flashes or an alternating slow flash as it tells you a fault code.
A blocked vent or a draft can also trigger the error, so your Aramendia Plumbing, Heating and Airtechnician will look at other parts of your furnace first.
The cost to fix your furnace hinges on what’s wrong with it and how long it takes to fix it.
You can expect to pay between $40 and $350 if you need a new low-fire pressure switch.
When you need to have your furnace repaired, reach out to the Experts at Aramendia Plumbing, Heating and Air to figure out the fault code and take care of the problem.
Call us at or schedule an appointment online today.
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