Hi Redstorm,

1 : Overtemp protection, indicated by the red led on the driver (clockwise turn = decrease the limit point)
2 : TEC temp control (clockwise turn = rise the temp of the pump diode)
3 : Max limit of the pump diode current (clockwise = higher limit current).
4 : Actual current to the pump diode (clockwise = increase current)

Be careful by modifying factory preset adjustments!

Hope that helps... Anyway, if you have a defective laser, I advise you to contact David at Lasever, maybe he can do something for you.