The DC system is abnormal, and UPS5000-E cannot transfer to battery mode, what should be done?
1） If the battery switch box does not match, the battery voltage is lower than the threshold, or batteries are faulty. Please replace the battery switch box.
2） If battery cables are not properly connected, wiring terminals are not in good contact, or the battery switch is OFF. Please connect battery cables properly, and turn on the battery switch.
3） If a module is faulty. Please replace the module.