Hi I’m enquiring about an issue I’m having with my Phoenix pure sine wave inverter 12 /375. The issue is that it shuts with green light blinking and solid red light. After some time only the red light stays on indicating overload problem. The issue is that nothing is connected to the inverter to draw power for it to overload. It is only 2 yrs old. Please if you have any advice on how to fix the issue it would be greatly appreciated Thankyou