I just took delivery on my Sundance Edison yesterday. Wiring was done at 240V/50A. I set the temperature to 102F at 2pm yesterday (water temp, 63F). As of 8 pm today, the temperature has only risen from to 96F. Aside from a few hours when either my kids or I went into the water (sometimes with the jets on), the lid has been on and the jets turned off. Overnight, the temperature did not budge more than a degree or two (lid was on overnight).
Am I doing something wrong?