Hi,
I just tried starting up my pool heater and the code FL0 comes up. According to the manual a good cause is dirty pool water. My pool water is okay so I don't think this is a cause. There is some mention of the pressure switch. I took a look at it and it is a little discoloured. My question is should there be water coming out of the siphon tube when I disconnect it from the pressure switch? There is not.
Thanks,
Dave