AC200MAX Display Control Failure Due to Logic Lockup

Confirm this cause by verifying that the unit is otherwise operational and that all other system parameters appear normal on the display. This is the most likely cause when the HMI software enters a frozen or 'hung' state, preventing the dispatch of commands to the BMS. Confirm this by checking if the unit has been running for an extended period without a power cycle and by verifying that no error codes are present in the app's diagnostic logs that would indicate a permanent hardware component failure.