1. If solar energy has been used for a long time, first check whether the excess heat discharge port (overflow port) is smooth
2. I don't know the level of your solar energy. East. Check if the Yang Cheng water pump matches?
3. If it is a new pump, check if the water pump is working normally.
If the hot water starts flowing and then stops when half the water is displayed, the water level and temperature sensor may be broken and the display or abnormal. If it shows half temperature but no hot water flows when turned on, the pipe may be frozen and blocked. You can try opening the heating tape to defrost it. If hot water still doesn't flow after defrosting, this is the case. is the first situation.