The main screen has a section at the bottom (indicated in the images below) to indicate either charge state if the controller is charging normally or fault information if the controller has entered a fault state. All of the possible charge states and fault states are listed in the table below. The actual value displayed may be prefaced with “BAT1” or “BAT2” if the remote display is connected to a GP-RVC-MPPT-30 controller since these are dual bank controllers.