I have a 2001 LESIURE bAY Spa...has been woking just fine...I drained it just to change the water....refilled it and now it will heat for about 15 minutes and then all then everything goes to sh__t. Everything on display just reads Un-eligible.....for 15 minutes everything works fine...temp control..jets...ect.....after that...nothing...does not throw gfi...just does it's own thingh

Well...I didn't get any responses so I re-drained the hot-tub last night and refilled today thru the filter hole , which I have never done in the past 6 years. Well so far so good. It is up to about 88 degrees and seems like it may be ok....not sure what happened but this might help someone else out there...