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Thread: FLO Error
10-18-2009, 11:03 PM #1
Refilled and started hot tub after 8 months empty. FLO error appeared on display. Only able to move temp in cooler direction - no increase in temp settings. Jets work with button pressed. Feels like circulating pump (just replaced) is working. Water feels cool - no increase in temp. Please advise on what to check next.
10-20-2009, 05:23 PM #2
The FLO error could be caused by a clogged or dirty <a>spa filter</a>. You can try removing the filter to see if that makes a difference. A filter may look clean but can still clog if it has not been replaced with a new one in a while. You said that the spa circulation pump feels likes its working, you should be able to feel a small constant stream of water coming out of the heater return fitting. The other component that can cause a FLO error would be the flow switch. The spa will not heat in a FLO condition. When you push the button on the panel to increase the temperature does the display change settings and the spa if just not heating? Or does it reach a certain setting and will not go any further but you can then lower it?
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