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Lennox error e4

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Lennox error e4

If you’re seeing the Lennox error e4 on your HVAC system, it’s indicating a problem with the outdoor temperature sensor. This sensor is responsible for measuring the temperature outside and communicating that information to your HVAC system. It can cause issues with your system’s overall performance when it malfunctions.
 
You can try a few things to troubleshoot this error on your own. First, check to ensure that the sensor is properly connected and not damaged. You may need to replace the sensor if it appears in good condition.
 
If you’re uncomfortable making these repairs yourself, contacting a licensed HVAC technician is best. They can diagnose the issue and make the necessary repairs to get your system back up and running smoothly.
 
Remember, regular maintenance and inspections can help prevent issues like this from occurring in the first place. So, schedule routine maintenance appointments with your HVAC professional to keep your system in top shape.