Hi,
I have the FL-1 error on my jacuzzi. The water is the right level and the filter is clean, I have tried taking out the filter and then putting back in and it still shows the same error. Interestingly, the jets work, which appears to be contrary to this error code, but no heater light. The heater light does come however when the jets are on low (but not high). Any ideas as I am currently heating up the tub but pressing the jets on every 20 mins. I don;t fancy my chances on using it tonight as it is currently 31 degrees and I want it 36.5 before I even put a foot in :-(