Sub FindRefErrors()
Dim c As Range
Worksheets(2).Range("A:A").ClearContents
For Each c In Worksheets(1).UsedRange
If Application.WorksheetFunction.IsError(c) Then
If c.Text = "#REF!" Then Worksheets(2).Range("A" & Rows.Count).End(xlUp).Offset(1) = c.Address
End If
Next
End Sub