My solar leak protection outlet shows a green light when I press Reset. It used to be a red light, b

First of all, the green light means it is working properly. Theoretically, the test can be performed once a month. Do not test frequently.

Every time you press the button during testing, the leak protector works normally, which means the device is leaking. Not doing so is a mistake. After the test is turned off, reset it first, then plug in the socket.

Second, even solar water heaters are electrical equipment that consume a lot of electricity. They should not share sockets with other equipment and avoid using ordinary power strips.

Nowadays, the heating elements of water heaters have good insulation capabilities and there are generally no leaks. Use a multimeter to check for a leak