Carrier datacorder technical term

[cjliaw14]

Does anyone knows these code stand for what? i got these code from my datacorder when i extract my refrigerator's data.

1) DS
2) DE
3) OFFwb
4) ONwb


Thanks.

[Colden Eye]

1) Defrost Starts
2) Defrost Ends

I have never heard of ONwb nor OFFwb...