How to set the thawing mode of Huahui Le Jia solar automatic controller

Hello: how to adjust the automatic water supply instrument of solar water heater to freeze? In the physical button area of the solar water heater, click the unfreeze button. If the water in the solar water heater can't flow out due to the low temperature outside, manually turning on the defrosting function can melt the water in the water pipe. Anti-freezing method of solar water heater: 1 Anti-freezing by dripping water: You can turn on the hot water tap slightly to ensure the fluidity of water by dripping water, or you can put a basin to catch the dripping water. 2. Evacuation and antifreeze: If solar energy is not used for a long time, or the weather temperature is too low, you can empty the water in the solar water heater. 3. Anti-freezing of tracing belt: When the temperature is below zero, turn on the electric tracing belt. I hope my answer is helpful to you, please refer to it!