The short answer: a Cove dishwasher that will not drain has a blockage or a failed drain pump somewhere between the tub and your plumbing. Cove does not report this as a numeric code, so a technician works along the drain path, filter, sump, pump, hose and disposal or air-gap connection, until the water moves again.
Cove dishwashers drain at the end of every cycle through a small pump and a hose that ties into the sink drain or disposal. Anything that restricts that path leaves water in the tub. Because the machine also watches for water where it should not be, a stubborn drain fault can eventually stop the dishwasher entirely, so it is worth clearing early.
Why a Cove Stops Draining (No Error Code)
There is no fault code for a drain problem on a Cove. We diagnose by tracing the water path. These are the causes we find most often, and how each is corrected.
| Symptom | Likely Cause | Our Fix |
|---|---|---|
| Water over the filter after every cycle | Clogged filter or sump | Clean the filter and sump, clear debris |
| Drains slowly, then stops | Kinked or partly blocked drain hose | Reroute or clear the hose, remove the kink |
| Pump hums but no drain | Object jammed in the drain pump | Remove the debris, test the impeller |
| No drain, pump silent | Failed drain pump or control signal | Test and replace the drain pump |
| New install, will not drain | Disposal knockout plug still in place | Remove the plug, confirm the connection |
| Backs up into the sink | Blocked air gap or shared drain | Clear the air gap and drain junction |
How a Technician Diagnoses It
We start by clearing and inspecting the filter and sump, since a season of debris there is the most common cause. If that is clear, we check the drain hose for kinks and blockages and confirm the connection at the disposal or air gap is open. When the pump is reached, we test it directly: a pump that hums but does not move water usually has something jammed in the impeller, while a silent pump is either failed or not being signalled to run.
What the Repair Involves
Most drain repairs are a filter and sump clean, a hose clearance, or a drain-pump replacement with a a part selected for the approved scope. After the work we run a fill-and-drain cycle and confirm the tub empties fully, so you are not left mopping up at the end of the next wash.
Standing Water in Your Cove?
We clear the drain fault and repair with genuine OEM parts. Book online or call. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.
Related Reading
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Cove Repair Guide
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