Straight answer first
A Comfee CDC dishwasher that leaves water in the base after a cycle is usually blocked rather than broken, and that is the useful starting point. A small film left after a cycle is not a fault; a covered base is. Beyond the filter, the drain hose and the air gap, the remaining causes need the machine moved.
What you actually observe
- Water clears but takes a long time — Partial drainage is an early filter blockage, and it gets worse.
- Water appearing at the waste — That points at the household drain rather than the machine — a blocked trap.
- It refuses to run now — Bail the water out and clean the filter, then try again.
- It never drained since it was fitted — This is the classic recent-installation fault.
- Water appearing at the air gap — Unscrew the cover and clear the chamber of grease and debris.
- NEAR MISS — dishes come out dirty with a dry base — That is a cleaning complaint, not a drainage one — a different page.
Ranked causes for these models
- The sink-deck cylinder clogged — It ranks in the middle because not every installation has one.
- Food and labels in the filter mesh — First by a wide margin: it accounts for more drainage failures than everything else together.
- A restriction in the drain line — A machine pushed hard against a wall crushes the hose flat.
- Drain pump obstructed — An impeller that will not turn is a technician job to clear properly.
- Control or drain valve fault — Lowest because it is the rarest answer here and everything above is cheaper to test.
The order to work in
- Lift out the filter and rinse it — Use a soft brush on the mesh and check what comes out.
- Inspect the hose run — Pull the machine out gently and look along the whole run.
- Remove the water first — A cup and a sponge — a dry base is much easier to inspect.
- Check the pump inlet carefully — An impeller that will not turn by hand is an obstruction.
- Look at where the hose joins the waste — If drainage failed right after an installation, that is almost certainly it.
What to do before the panel comes off
Safety
Unplug the appliance or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off. Do not leave a machine full of standing water for days: it goes sour. Take care with hot water: a cycle that failed part-way can leave the base hot.
Models in the CDC dishwasher family
Reference| Model number | Family key |
|---|---|
| CDC17P0A** | comfee:dishwasher:cdc |
| CDC17P0ABB | comfee:dishwasher:cdc |
| CDC17P0AWB | comfee:dishwasher:cdc |
| CDC17P0AWW | comfee:dishwasher:cdc |
| CDC17P2A** | comfee:dishwasher:cdc |
| CDC17P2AWW | comfee:dishwasher:cdc |
| CDC22P**** | comfee:dishwasher:cdc |
| CDC22P1*** | comfee:dishwasher:cdc |
| CDC22P1A** | comfee:dishwasher:cdc |
| CDC22P1BBB | comfee:dishwasher:cdc |
| CDC22P1BWB | comfee:dishwasher:cdc |
| CDC22P2A** | comfee:dishwasher:cdc |
| CDC22P2AWW | comfee:dishwasher:cdc |
| CDC22P4A** | comfee:dishwasher:cdc |
| CDC22P4AWW | comfee:dishwasher:cdc |
When to call a technician
Mention the sound at the drain step: a hum points at an obstruction, silence at the pump or control. Call once the filter, the hose, the air gap and the disposal are all clear and the base still holds water.
Nearest pages for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
