Norcold 1200LRIM won't stay off

[grldst]

Fridge will not stay shut off. I hold down the off/on button for 3 seconds, and the fridge shuts off, but after 2 to 3 seconds it starts up again. Have tried different modes, AU, AC, LP, same results. Tried different temp settings....same results.

Only way I can keep the fridge off is to unplug the 12 volt power wire from the control board on the back of the fridge.

What is the issue here....the "optical control" on the front of the fridge, or the "main control board" on the back of the fridge, or something else.

Aside from the above issue, the fridge cools and works fine on all modes. There are no error codes.

[dougrainer]

Never had this come up before. Since the Main board responds to the Optical, my guess would be the Optical. Take it loose and check the connections inside the housing for corrosion. IF you disconnect the Optical harness at the optical board and the refer stays ON, then the odds are it is the optical. Doug