Getting chilly because you’re seeing error code 223 from your Lennox® furnace?
This is telling you your furnace’s low pressure switch is open. Due to the malfunction, your system will not function for your safety.
Turn to the Experts at Becht/Givens Service Experts to handle fixing this furnace error. Our NATE-certified technicians are among the elite in the industry when it comes to recognizing and repairing furnace troubles.
Your satisfaction is critical to our business. That’s why we back our furnace repair work in Louisville with a 100% Satisfaction Guarantee* for a year.
How a Low Pressure Switch Works
Pressure switches are an important part of the heating system.
Here’s how your furnace works after the thermostat starts to call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This gets rid of combustion gases from the heat exchanger and sucks in new gas and air so the burners can start.
- When the pressure switch senses that a suitable amount of air is being brought into the burners, it closes and triggers the control board to ignite the furnace.
- Your furnace ignites and heats your home.
A two-stage furnace has more than one pressure switches, which permit it to run at multiple speeds—and be more efficient.
What Happens When a Low Pressure Switch Fails
The low pressure switch may be open for several reasons.
There could be a:
- Obstructed vent
- Stopped condensate drain
- Cracked hose
There could also be an issue with the switch itself, the inducer or the circuit board.
Your furnace will show you there’s a problem 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 might observe fast flashes or an alternating slow flash as it replays a fault code.
Estimated Repair Cost for Furnace Error Code 223
The cost to fix your furnace depends on the issue it has and the hours it takes to repair it.
Here are expected replacement costs for several components that could be affected:
- Pressure switch—$40 to $350
- Inducer—$600 to $1,500
- Circuit board—$200 to $600
Call the Experts at Becht/Givens Service Experts
When you require furnace service, you can trust the professionals at Becht/Givens Service Experts to work on the fault code and get your heat flowing again.
Call us at 502-785-8230 or schedule an appointment online today.