Last night I flipped on my heater for the first time in a few months and it works fine. The spa heated up to the 99 degrees it was set at no problem. I had decided I wanted to raise it up a degree so I went to the heater display panel and held the, "down" button until it started flashing but when pressing the, "up" button nothing happens. I can lower the temperature down and the mode selector button works fine but the, "up" arrow button does not seem to work unless I am doing something wrong. I have been in this house for about a year and the equiptment was put in along with the pool/spa around 5 years ago I would assume.
Any help is appreciated and thanks in advance.