Helithumper Posted October 5, 2017 Report Share Posted October 5, 2017 Hi I'm new to the forum. One of our clients gave us his 2005 sundance spa palermo because the were never using it. The owner of the tub said that it stopped heating So I have installed the hottub and replaced the heater and I still have the flashing fl1 code. I can see the flow switch and it's working properly. I've also checked and I have contenuity when the tub is on. The circ pump is working as well. I've filled the hottub with a garden hose in the filter tubes to eliminate an air lock. I've also run it without the filter. What am I missing? Can it be the circuit board. Thanks dave Quote Link to comment Share on other sites More sharing options...
Helithumper Posted October 5, 2017 Author Report Share Posted October 5, 2017 I forgot to mention. All the functions are working becides the heater. All three pumps and lights are working as designed. So not sure what else could set off the fl1 code. Quote Link to comment Share on other sites More sharing options...
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