Check hybrid system warning

Hi guys I am driving 2012 prius. 3 weeks before I got warning light on dash yellow triangle and it says check hybrid system. Somebody told me it might be hybrid fan so I cleaned which was clogged and put it back so the warning lights went off and everything was working fine but today I got same warning light on dash check hybrid system. Before there was a fan noise as well heard. Do i need to check the fuse as weI ? And where is the fuse loxated for this fan ?dont know much about this Can you guys please help me

Regards
Wasib

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