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Lennox error code 434

Furnace, Lennox0 comments

Lennox error code 434

Lennox error code 434 is a common issue homeowners experience with their heating and cooling systems. This error code indicates a problem with the flame sensor in the furnace. The flame sensor is responsible for detecting whether or not the burner is lit, and if it is not functioning properly, the furnace will not be able to heat your home.
 
If you are experiencing this error code, there are a few things you can do to troubleshoot the issue. First, try cleaning the flame sensor with a soft cloth or brush to remove any dirt or debris interfering with its function. If this does not work, you may need to replace the flame sensor altogether.
 
Addressing this issue as soon as possible is important, as a malfunctioning furnace can be a safety hazard. If you are unsure of hoo troubleshoot the problem on your own, it is best to contact a professional HVAC technician to diagnose and repair the issue.