1, insulation water tank may use poor corrosion resistance 201 stainless steel material. Rust may occur inside the insulated water tank. So as far as possible please professional check insulation water tank. If corrosion occurs, it should be repaired or replaced.

2. If the water pipes inside a building are made of iron, there is probably rust inside. Get it checked out by a professional if you can. In addition, if the replacement of water pipes, as far as possible to replace the new PVC or other iron materials, water pipes are easier to rust;

3, it is also possible that the installation position of the inlet and outlet of the thermal insulation water tank is not correct, resulting in the normal circulation of water in the thermal insulation water tank, water stagnation to reinstall the inlet position and outlet.

The above three points are all about the three reasons that cause the water in the thermal insulation water tank to turn yellow. Thank you for your understanding and support!