Thermador DWHD770WFM
The 770W is a Sapphire tier model, aimed at kitchens that wash a lot of glassware and want dry dishes without opening the door early. Its wash and drain systems match the Emerald tier beneath it, and what sets it apart is the StarDry mineral drying system and the Crystal Protection glass care.
When dishes come out damp on a machine like this, the instinct is to blame the wash. We do not. Dampness with StarDry enabled belongs to the Zeolite chamber and its fan, the very area E2120 and E2130 describe, which is separate from the heat-pump drying found on other tiers. So we test the heater and fan first, and keep the drain and inflow checks for when those codes appear.
StarDry works through a Zeolite-mineral chamber with a fan of its own, which is separate from the heat pump on other tiers. So repairs target those parts instead of the standard drying path.
No. Crystal Protection works through the wash cycle and has no mechanism of its own, so the usual care you give any dishwasher covers it and nothing additional needs scheduling.
At the drying chamber and its fan, before the filter or pump. Those are the parts the E2120 and E2130 codes describe, and damp dishes with StarDry active point to them.
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