[jdofaz]

Sometimes the terminal will ask Debit or Credit, sometimes it will just prompt for a PIN (meaning it wants to run it as debit) and you can just hit OK and it will run it as credit instead.

[quesera]

Annoyingly, Home Depot makes you press "Cancel" at the PIN prompt, and then it automatically runs it as credit.

Of course if you do that anywhere else, you have to restart the flow.