How to Clean a Cove Dishwasher Filter, and When It Needs Replacing

To clean a Cove dishwasher filter, roll out the lower rack, twist the cylindrical filter counterclockwise, lift it out with the flat mesh screen beneath it, and rinse both pieces under warm running water with a soft brush before locking them back in. The job takes about 10 minutes, and doing it roughly once a month keeps the Cove wash pump, drain and spray arms working as designed.

The Cove filter is a manual-clean design: unlike older dishwashers with a built-in food chopper, a Cove holds scraps and grease in the filter until someone removes them. This guide covers the cleaning routine, hard water, replacement and clog symptoms.

How do you take the Cove filter out and rinse it?

Let the Cove dishwasher cool after its last cycle, since sump water can stay hot. Roll the lower rack out to expose the Cove filter near the base of the lower spray arm.

First, grip the top of the Cove cylindrical filter, turn it counterclockwise until it releases, and lift it straight up. Next, lift out the flat fine-mesh screen. Then rinse both Cove filter pieces under warm water, scrubbing gently with a soft brush.

Before reassembly, check the open Cove sump for pits, bones or broken glass, using tongs for anything sharp. Set the flat screen back flush, drop the cylinder in and turn it clockwise until it locks. Keep wire brushes away from the Cove mesh; one tear lets debris slip through.

Why does hard water make a Cove filter clog faster?

Hard water carries dissolved calcium and magnesium, and a Cove dishwasher heats that water on every wash. The minerals settle out as chalky scale that coats the Cove filter mesh and gives grease a rough surface to grip, so the filter loads up sooner.

Scale on a Cove filter looks like a white, crusty film that brushing will not remove. A 15 to 20 minute soak in white vinegar loosens it. A full Cove rinse aid dispenser and a monthly empty cycle with dishwasher cleaner slow the buildup.

A Cove dishwasher also cleans best with water arriving at about 120°F; cooler water leaves more grease on the filter.

Is the Cove filter the same as a Sub-Zero water filter?

A Cove dishwasher filter and a Sub-Zero refrigerator water filter do different jobs. The Sub-Zero cartridge treats the drinking water and ice, and its media wears out, so it is changed on the interval the refrigerator indicator or use-and-care guide gives. A clogged Sub-Zero cartridge shows up as a slow dispenser and small or hollow ice cubes.

The Cove dishwasher filter does nothing to incoming water. The Cove filter only strains wash water in the tub, so cleaning restores it fully.

When does a Cove filter need replacing instead of cleaning?

A Cove filter has no replacement interval; with monthly cleaning, the same Cove cylinder and mesh screen can last many years. Replace the Cove filter only when it is physically damaged: a tear in the mesh, a cracked or warped frame, broken locking tabs, or a cylinder that no longer turns firmly into its lock.

A mismatched part causes its own trouble: a generic filter sold as a fit may drop into a Cove without locking, leaving a gap that lets seeds and glass chips reach the drain pump. Order the genuine Cove filter by the model and serial number on the rating label.

What are the signs of a clogged or wrong Cove filter?

Standing water is the clearest sign. A small puddle in the Cove sump is normal; water covering the tub floor after a cycle means the filter is blocked.

Dishes tell the rest. A Cove dishwasher with a loaded filter recirculates dirty water, so glasses come out gritty, food specks dry onto the upper rack and a musty smell greets you at the door.

A Cove wash pump starved by a clogged filter can gurgle. A rattle or grinding noise can mean an object got past a torn or mismatched Cove filter into the pump; stop using the dishwasher. If the Cove display shows a drain fault, clean the filter, then run a short rinse.

Rebuilt Coffey Park and Fountaingrove kitchens, and when to call

Coffey Park was almost entirely rebuilt after the 2017 Tubbs Fire, as was roughly 70% of Fountaingrove, so many Santa Rosa kitchens hold a Cove dishwasher now five years old or more. New supply lines shed sediment early, so a Cove filter that has never been pulled may need a vinegar soak.

Filter cleaning and checking the drain hose for a high loop are owner jobs. A Cove that still holds water with a clean filter, repeats a drain fault, leaks or grinds needs a technician, because the drain pump and valves sit behind panels. The service call is $89, credited toward the repair, and you approve one fixed total before any work begins.