The DWHD440MFP is a legacy 24-inch Thermador dishwasher from before the Sapphire/Star Sapphire tier naming Thermador uses on its current and W/J-series lineups — its model number and marketing instead used a plain “Professional”/”Masterpiece” collection split. It’s rated for 15 place settings, a capacity not used on Thermador’s more recent 14- or 16-setting dishwashers, has no third rack, and no built-in water softener.
Despite its age, this model still uses Thermador’s documented electronic drainage and water-inflow error codes, so we still start from the exact code shown on the display. Given its age, we also confirm parts availability early in any repair estimate.
Key Features
- 24-inch built-under dishwasher, Professional® Collection with bar handle, from a legacy Thermador generation
- 15 place settings (a capacity not used on later generations), 48 dBA sound rating
- Condensation drying, no third rack, no built-in water softener
- Short cycle list: Pots & Pans, Auto, Normal, Quick, with IntensiveZone and Extra Dry options
Most Common Issues on This Model
Won't drain (E22/E23/E24/E25 drainage family)
Water won't fill properly (E14/E16/E17/E18)
Limescale build-up problem (E12/E2060), more likely without a built-in softener
Replacement parts availability, since this legacy model is no longer sold new