I need some help on this danfoss EKC 202D1.

Its controlling a small freezer unit

The set-point temperature is -18º

The R1 seting is diferential is 2

The R2 setting is max limitation of setpoint -16.5º

The R3 setting is min limitation of setpoint -18º

But the freezer is getting temperatures of -30ºc

its just too much cold i don't know what to do to make the temperature stay in the correct interval.


Where is the manual
http://www.ra.danfoss.com/TechnicalI...EKC202_302.pdf

Can someone give me a help?

Thks