On the page that says "You may want to withdraw money from your HSA," it says it looks like I have an excess contribution of $1,500! My balance in acct is $889. Why??

My employer contributes $1,500 annually.  I currently have a balance of $889.  I used $660 and show that on my taxes.  It's saying I have an excess contribution of $1,500.  I don't think I have an HDHP, as my min. ded. is $1,500, but my max. ded. is $2,300.  Why does it say I have an excess of $1,500??