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My 3 months old Lennox EL296V consistently reports ERROR 229, the furnace starts up with the blower in high speed and high fire, after a bit (20 - 30 sec or so) the blower slows down and enters into low fire mode. I looked at the little display window on the furnace, and it displays E229. It has been doing this every time it starts up, I was not concerned initially and I thought it might be caused by certain weather / wind conditions, however, as I went through the Lennox manual, I now suspect the low fire pressure switch is malfunctioning. Any input from HVAC gurus? Shall I have it serviced? Thanks,
From installation manual:
Error 229 - Ignition on high fire. IFC switched to high fire ignition because low fire pressure switch did not close in allowed time. No action is needed.
From installation manual:
Error 229 - Ignition on high fire. IFC switched to high fire ignition because low fire pressure switch did not close in allowed time. No action is needed.