The solar water heater has an overflow port at the high water level, and the overflow port is connected to the overflow pipe. The overflow pipe has two functions. One is to provide ventilation to ensure that the pressure in the solar water storage tank will not increase due to feed water pressure. The other is to ensure that the water level in the water storage tank reaches the overflow. Opening and excess water will drain from the overflow opening. When the overflow pipe overflows with water, it means the solar water heater is full of water. At this time, the water supply valve should be closed in time to avoid wasting water resources. . When filling with water, it is normal for a small amount of water to flow from the overflow pipe because the very humid air inside the tank is continually exhausted from the overflow pipe.
The reasons for the leaksoverflow port of solar water heaters: 1. The inlet and outlet pipes are broken; 2. The silicone sealing ring is damaged 3. The vacuum tube is broken; the solenoid valve is damaged; 5. The sensor is damaged; 6. The computer card is damaged; 7. The water tank is broken; ?Methods for repairing leaks at the overflow port of solar water heaters: ?1. Replace the 4-point aluminum-plastic pipe; ?2. Replace the silicone sealing ring (47 and 58); . Replace the solenoid valve (12V and 24V) 5. Replace the sensor corresponding to the computer card (side or bottom) 6. Replace the computer card with the same model 7. Remove the water tank and return it to the factory; for welding or replacement. I hope my answer is helpful.