New to forum: hope you can help. I have a Sundance Capri spa and have enjoyed it for years. It has been bitter cold in the Northeast. Went out to check on the spa, water was cold and was giving me alternating ICE and FLO indicators along with a temperature reading around 60. I changed the filters and determined that I needed a new flow valve...so I replaced it. Both pumps seem to be operating properly now, but I am still getting a FLO error message...and have done all the things I have read on line to remedy that situation to no avail. The panel does not show that the heater is active....although the temperature of the spa has been slowly rising...it's now at 75 and it is only 15 outside...so, something is heating the water. The pumps do not feel unusually hot to the touch. I went ahead an ordered a new temperature sensor since it seems that for $26 it was another thing to check off the list. Can anyone provide any additional guidance regarding the failure to get the spa heating properly and also about the FLO error message?
Thanks.
David K