Search results

Thank you sir for all your help. @RDspaguy

How do I go about replacing the heater relay? Or is it the entire board? The temp is set at 98 and cranks up to over 105 but the screen will only show 105 and not shut the heater off when it hits target temp. Thank you in advance for any advice or help.

Thank you both for your answers. I will look into replacing the heat relay. I am jack of all trades and a master of nothing. Except being annoying, just ask my teenage daughters.

We got a 2005 Sundance 850 Optima spa for free from a family friend. The hot tub seems to be having issues. We have the temp set at 98 and randomly it will run up to 105 and produce OH on the screen. While in the hot tub the heater seems to be continuously running and pumping out really hot...