There are several possible reasons for the above situation:
1. The check valve of the solar water supply solenoid valve is broken, and the hot water flows back into the tap water pipe when the water is turned off. The water isolation valve between the solar water inlet pipe and the tap water pipe is broken. After filling with water, the water in the solar cabinet returns to its original path, so there is no water in the cabinet.
2. When the water supply is turned off, the water filling function is activated and the solenoid valve is opened, but there is no water in the pipeline. The solar water flow returns to the tap water pipe. When the water supply function is activated, the pipe valve is opened. If tap water does not enter, water from the sash will flow out, which will also cause water loss in the sash.
Detailed informationCommon sense regarding water storagein solar water heaters
1. The water storage capacity of a solar water heater water storage tank is from 80 liters to 620 liters.
2. Be sure to fill the empty tank with water and turn off the water tap in time.
3. Make sure the wall can support twice the weight of the water heater filled with water and that the fixings are firmly installed; make sure there is space for water heater maintenance.
4. After all the pipes are connected, turn on the faucet or valve, then turn on the hot water to fill the water heater and vent the air until water comes out of the hot water faucet. indicating that the water has been filled. Close the hot water tap and check the tightness of all connections. If there is a leak, drain the tank, repair the leaking fitting and refill the water heater