1. Inlet water pressure is higher than solar water heater work pressure.
Seven star high pressure solar water heaters all have quality pressure reducing valve keep the inlet water pressure never high than work pressure.
2. Solar water heaters P/T valve not working
P/T valve is a pressure and temperature protection valve, it will open when pressure and temperature higher than preset pressure and temperature.
3. Water tank quality is not good
All of Seven star’s high pressure solar water heaters are under strictly pressure test, we own advantage welding technology and welding machine, we have rich produce experience on high pressure solar water heater ,our products ware proved very reliable and durable.