How to solve the problem of blinking red light 4 times for JONR ED12

How to solve the problem of blinking red light 5 times for JONR ED12

x01 specs test 没用的

General Information
AC 110V 1500W MAX
12V3A
5V/9V/12V DC, 24W MAX
5V/9V /12V/15V/20V DC,100W MAX
13.6V DC,10A 136W MAX
NCM 18650
14S8P(2.5Ah*3.6V)
Environmental Operating Temperature
-20℃~+60℃ ± 3℃
0℃~45℃ ± 3℃
Continuous stable pure sine wave output with inbuilt, E-UPS, inbuilt automatic AC charger and AC mains Fast charging, intelligent E-speed technology 0-80% in 1hours. E-VSZ 2500W Constant Power MAX Accessories: 1*Anderson to Cigarette lighter cable, 1*AC cable, 1*User guide