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Trane error code 2 flashes

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Trane error code 2 flashes

If you’re seeing two flashes on your Trane furnace, it’s indicating an issue with the pressure switch. The pressure switch is responsible for ensuring that your furnace’s combustion chamber is properly vented, and if it detects an issue, it will shut down your furnace to prevent any potential safety hazards.
 
To troubleshoot this issue, you can start by checking the air filter and ensuring it’s clean. A dirty air filter can cause pressure buildup in the system, triggering the pressure switch to shut down your furnace.
 
If the air filter is clean, you may need to check the vent pipes and ensure they’re clear of any obstructions. A blocked vent pipe can also cause pressure buildup and trigger the pressure switch.
 
If you’re still experiencing issues after checking these potential causes, it’s best to contact a licensed HVAC technician to diagnose and repair the issue. They’ll have the tools and expertise to identify and fix any issues with your Trane furnace.