How does a solar water heater heat? Why does the solar water heater not work?

What should we do if the sunlight is weak in rainy and snowy days and the water temperature in the solar water heater cannot reach the bathing temperature? The following is the relevant content about "How to heat the solar water heater". However, when choosing a solar water heater, it is better to choose a brand with safety guarantee, so that it is safe to use and there is no need to worry about after-sales maintenance.

Contents of this article

1. How to heat solar water heaters

2. Why can’t the solar water heater produce water?

3. How to clean the scale in the vacuum tube of solar water heater

How to heat solar water heater

1. Add cold water to the water tank. Open the cold water valve and thermostatic valve, and let the cold water flow into the water tank through the cold water pipe, cold water valve, thermostatic valve, and upper and lower water nozzles. When water overflows from the overflow pipe, close the cold water valve and the water filling is completed.

2. Put hot water in for bathing. When the water temperature in the water tank reaches the bathing temperature, open the hot water valve, thermostat valve, and shower head to let the warm water flow out for bathing. If the water flowing out of the shower head is too hot or too cold, adjust it through the thermostat valve and cold water valve until the water temperature flowing out of the shower head is appropriate.

3. Use of electric heating. If the sunlight is weak on rainy or snowy days and the water temperature in the solar water heater does not reach the bathing temperature, you can plug in the power plug to assist in heating the water in the water tank. When the water reaches a suitable temperature for bathing, cut off the power and use water again. When operating, just press the leakage protection plug button, the power indicator light will light up (red), and the electric heating rod will start working. Press the test button, the power will be cut off, the power indicator light will go out, and the heating will stop.

Why is there no water coming out of the solar water heater?

Possible reasons why the solar water heater does not produce water:

1. The water in the water tank has been drained. Wait until it is filled with water and heated before use.

2. If the pipe interface is detached or blocked, reconnect it or clear the pipe.

3. In winter, the water pipes may freeze. They will melt automatically about 3 hours after the sun comes out. In cold areas, you can also install a drain valve.

4. The water supply and drainage valves are leaking, the water supply valve is also leaking, and the tap water pipe has been without water for a long time, causing water backflow, which requires maintenance.

5. The shower valve or hot water nozzle is malfunctioning and is not actually open, requiring repair.

How to clean the scale of vacuum tube of solar water heater

The specific steps are as follows:

1. Remove the vacuum tube and handle it with care to avoid breaking it.

2. Pour out the scale.

3. Pour a special acid descaling agent into the vacuum tube and soak it for about ten minutes.

4. Use a brush to pull back and forth inside the vacuum tube to remove the remaining scale and then rinse it twice with clean water.

Causes of scale formation: Solar water heaters use ordinary tap water, which contains minerals such as sodium chloride, magnesium chloride, calcium chloride, as well as soluble gases such as carbon dioxide and oxygen, and sodium hypochlorite disinfectant. The content of components in tap water in different regions is different, but after the process of heating, cooling and recirculating heating, some insoluble substances in the tap water will precipitate to form scale.