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1303750865 78 How do I get rid of the FLO message on my Sundance Optima (2002).  I have changed the filters and restarted.?

I have added brand new filters and restarted and everything works – lights, jets, etc. Just no heat. FLO message flashing. is there another filter to change underneath? is there a sequence for restarting that must be followed? Any switch underneath I need to check?

How do I get rid of the FLO message on my Sundance Optima (2002). I have changed the filters and restarted.?