Whirlpool Goldstar GI5FSAXVY02 Frost in Freezer

Whirlpool GI5FSAXVY02 with control board WPW10310240

I am getting frost in the freezer compartment and I want to initiate a forced defrost, however I am unable to find the instructions for my model/control board.

Would someone please advise the correct procedure to force the defrost as part of my diagnostics.

Thank you