Dishwasher Not Draining? Vane Check Drain DD66-00045A – Fix Drainage Issues Fast

If your Samsung dishwasher is leaving standing water or draining slowly, a failed vane check drain is the most common culprit. In most Samsung dishwashers, the vane check drain acts as a one-way valve that allows water to exit while preventing backflow into the tub. When it fails, water pools at the bottom of the tub, the drain cycle runs but water remains, and odours can develop from stagnant water. ⚡ Common failure point in Samsung-built dishwashers across the DW80 and DMT series. Part DD66-00045A is the genuine OEM replacement that restores proper one-way drainage and eliminates standing water at the end of the wash cycle.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ Your dishwasher powers on and runs a full cycle normally
• ✔ The wash and rinse functions appear to work correctly
• ✔ Your home drain line and garbage disposal connection are confirmed clear
• ✔ The ONLY problem is water remaining in the bottom of the tub after the drain cycle

Not sure? Send us your model number — we'll confirm before you order.

🔧 Common Symptoms

• Standing water at the bottom of the dishwasher after cycle completes
• Dishwasher drains slowly or incompletely
• Water backing up into the tub between cycles
• Foul odour from stagnant water pooling in the base

✔ If these symptoms match, this is the most likely failed component in the drain system.

✔ In most cases, replacing this vane check drain restores normal drainage immediately.

📦 Part Details

• Part Number: DD66-00045A
• Type: Dishwasher Vane Check Drain (one-way drain valve/flapper assembly)
• Brands: Samsung

⚙️ Installation

Skill Level: EASY — 15–30 minutes. Disconnect power before servicing. Remove the lower dish rack and unscrew the filter assembly to access the drain sump. The vane check drain clips or snaps into the sump housing — remove the old unit, seat the new DD66-00045A into position, and reassemble in reverse order. No special tools required.

✓ Compatible Models

Confirmed compatible with DMT400RHB/XAA, DMT800RHS/XAA, DW80F600UTB/AA, DW80F600UTS/AA, DW80F600UTW/AA, DW80F800UWS/AA, DW80F800UWS/AC, DW7933LRASR/AA, DW80F600UTB/AC, DW80F600UTS/AC, DW80F600UTW/AC, DW80J3020US/AA, DW80K5050UG/AA, DW80K5050US/AA, DW80K5050UW/AA, DW80J3020UB/AA, DW80J3020UW/AA, DW80K5050UB/AA, DW80J3020UB/AC, DW80K5050UB/AC, DW80J3020US/AC, DW80J3020UW/AC, DW80K5050UW/AC, DW80R5060UG/AA, DW80R5060US/AA, DW80R5061US/AA plus additional Samsung models. Contact us to verify your model number before ordering.

💡 Pro Tip