Like the 680, the 690 was published by Sub-Zero as a built-in 600 Series refrigeration cabinet with suffixed variants — 690/F, 690/S, 690/B, and 690/P — recorded exactly as printed, since no source we could find explains what the suffixes mean.
The issues most associated with a 690 are a cabinet that holds temperature overnight but drifts warmer through the day, condenser airflow restricted by dust at the grille, and a control panel reading a temperature the cabinet isn’t actually holding. With limited published detail on this specific variant, a technician visit is the most reliable way to confirm which of those applies to your unit.
Key Features
- Built-in refrigeration cabinet in the 600 Series
- 600 Series generation, no longer produced
- Also printed by Sub-Zero as 690/F, 690/S, 690/B, 690/P, recorded exactly as published; the suffix meanings are not documented anywhere we could read
Most Common Issues on This Model
Cabinet holding temperature overnight but drifting warmer through the day — a pattern documented for the 690.
Condenser airflow restricted by dust collected at the grille
For the 690, panel reading a temperature the cabinet is not actually holding