I have SC4020 with Expansion SC220. Controller #1 of SC4020 is booting normally but battery green light keeps blinking and I am unable to take any control of Controller #1. The Bottom Controller #2 completes the booting process and gives red light with green. Bottom controller was the one I use to connect my storage manager to. I guess Controller #1 was not configured for this. Can anyone guide me how to troubleshoot what can be done in it?

Thanks.