During periods of hot weather, it’s normal to have the spa water temperature rise. When this happens, you may want to keep your spa in economy mode, minimize your filtration hours and also open the lid in order to let the heat escape. In the interest of safety, do not leave a spa unattended while the cover is open.
A display of OHH on the control panel means that the thermometer has detected that the temperature of your water is 110 degree F.