Closing soon: inspection issues not fixed

Im closing in a few days. Due to some issues with the due diligence (sellers issues), we didn't do an immediate inspection after repairs were completed. Therefore will be doing a final walkthrough/combo inspection. ​ ​ Ive serious doubts one of the issues was fixed completely. They used a handyman which for 90% of the rest was fine. The issue is with the HVAC being a control or electrical issue (we left it up to them to solve). Based on how my inspector and I identified it, I've reason to believe they just ran the HVAC and said no issues. It takes some time (which during an inspection you have) for it to show up. ​ What are my options …