Usually I write one of the following:
- Refrigerator was noted, but not tested.
- Refrigerator is cooling. No inspection is made of interior components (shelving, racks, pans, interior walls, etc.) in occupied homes
- No refrigerator was present.
If the buyer is present, will usually do temp readings and let them know the temperture verbally, most likely will not write in report.
Hope this helps.