I just had a new pool built (with Solar) and it is controlled by a Hayward Goldline PL- PS-4 (solar sensor is installed). The solar is controlled by a Goldline GVA 24 Electronic valve wired to the valve 3 relay and it is in the on1 position. I have the Solar turned on (enabled) in the Config menu and have solar priority on. The manual states that if solar is enabled the valve will turn on when the water temperature is less than the desired temp setting (89 degrees) AND the the solar sensor is at least 8 degrees hotter than the water.
Based on this, it seems that I should start with the valve in the off position (water bypasses the solar unit) and that when the above temperature requirements are met the controller would open the valve and start pumping water to the system. However, I tried this and the valve did not open on a day when it was 110 degrees and the pool water was 83 degrees (the pool Temperature sensor is located between the pump and the filter - not close to the solar valve). I then opened the valve, allowing water to go to the solar unit (with ecostar pump at 50%) and my pool temperature sensor started going up fast and within 15 minutes said my pool water was over 100 degrees.
Question 1: In what position should the valve be placed initially when activating the solar?
Question 2: Does the controller open and close the solar valve based on the solar sensor and water temperature or is the operation of the solar system controlled in another way?
Question 3: What is happening when I turn on the solar valve and my pool water temperature goes up giving me a false temp?
Anything else I may be doing wrong?
Any help would be appreciated.