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Lennox furnace error code e125

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Lennox furnace error code e125

If you see error code e125 on your Lennox furnace, it means that there’s an issue with the pressure switch. The pressure switch is a safety device that ensures the furnace operates at the correct pressure. If the pressure switch detects that the pressure is too low or too high, it will shut down the furnace to prevent damage or other safety issues.
 
To fix this issue, you’ll need to troubleshoot the pressure switch and determine what’s causing the problem. This may involve checking the air filter, inspecting the venting system, or testing the pressure switch. If you’re uncomfortable with these tasks, it’s best to call a professional HVAC technician to diagnose and repair the issue.
 
In the meantime, you can try resetting the furnace by turning off the power to the unit and then turning it back on again. This may clear the error code and allow the furnace to operate normally. However, if the issue persists, addressing it as soon as possible is important to avoid further damage or safety concerns.