Did you haveTT fees deducted from it?
The IRS made an unusually large number of deposits on Feb 22-23. I (a user volunteer) suspect that Tax Products Group may have become overwhelmed trying to process all of these (not just from TT, but also from their other custmers), thus leading to delays. It can also take 1-5 days for your own bank to credit the deposit.
In the future, you can avoid dealing with TPG by paying your TT fees with a debit or credit card. Or, you can adjust your withholdings so that you do not have to wait for a refund at tax time.