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My working hot tub suddenly stopped yesterday. Control board has 240v power and topside panel has light and power. There is a FLO error on the topside panel. When i push jet 1, 2, 3, and light, the indication shows up but nothing really works. The temperature was 95, so i don't think it is over...

Re: My hot tub won't heat up I think my hot tub is hot now. Thank Bama Rambler for the idea about temperature issue. The problem was temperature probe. When I unplugged the High-limit probe, it causes a three dots and red light error signal. so i put it back. When I unplugged the Temp probe...

Re: My hot tub won't heat up Yes. same shape and smaller size. http://www.spadepot.com/shop/Hi-LimitTe ... 0C704.aspx My heater seems work only the filtration period. default setting is 60 minutes twice per day. It may enough to maintain hot water but not enough to heat up cold water up to 104...

Re: My hot tub won't heat up i uploaded the manual file to a webhard. this is the link you can view and download. http://me2.do/GU57e2zQ (manu button is not in English but it will work).

Re: My hot tub won't heat up I found a right manual (it's size too big to post) but i can't find any detail info about high limit sensor.

Re: My hot tub won't heat up I uploaded a better photo.

Re: My hot tub won't heat up I updated my post adding a schematic. I was looking at the hot tub maybe 30 minute and left. so I am not sure how long the power goes to the the terminals.

I moved in a house with hot tub six months a go. When I tried to use hot tub, it is power on but won't heat up. The model is LA Spas S series (H82113-2006). 240V 4K watt. these are what I have already tried: there was a three dots error signal (flow error) -cleaned filter -replaced pressure...