If the solar water heater meter shows that there is 2 bars of water, but it cannot release hot water, it may be due to the following reasons:
1. The tap is blocked. There may be a blockage inside the faucet or water line, preventing hot water from flowing. You can try cleaning faucets and water pipes.
2. There is a blockage at the water inlet of the water heater. Debris or sediment may be blocking water flow at the water inlet. You can check and clean the water inlet.
3. The water heater pump is defective. If the water heater pump is damaged or malfunctions, it will affect the normal circulation of hot water, resulting in the inability to release hot water. You can check if the water heater pump is working properly. If it needs to be replaced, please contact professional maintenance personnel.
4. The heater tank-water is leaking. If the water heater tank is leaking, it can lower the water level and prevent hot water from flowing. You can check if the water heater tank is leaking and repair it in time.
It should be noted that when inspecting and repairing solar water heaters, the power supply and water source must be cut off first to ensure safety. If the above methods fail to resolve the problem, it is recommended to contact professional maintenance personnel for inspection and repair.