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BQ24032A strange LED status

Hello,

we have implement in our product the BQ24032 as below

Everything work well , but some time we don't no why the LED status are flickering  between red and green ( STAT1 red and STAT2 green) when is connecting to the AC.But  if we connected to USB instead to the AC everything is OK the charger restart

I manage to get the same results by taking off the battery. But I couldn't find in the data sheet the explanation of this status. Also we check the battery is correctly connected.


Do you have any idea where is the problem ?

David