Dishwasher Smells Bad

Dirty or Blocked Filter

The most common cause. The filter collects food debris from every cycle. If not cleaned regularly, trapped food decomposes and produces a foul smell. Clean the filter at least once a month — more frequently if used daily.

Food Debris in the Door Seal

Food particles and grease accumulate in the folds of the rubber door seal, particularly along the bottom. This debris decomposes over time and produces an unpleasant smell noticeable when the door is opened.

Blocked or Dirty Spray Arms

Food debris can accumulate inside the spray arms and decompose, causing odours. The spray arms should be removed and rinsed periodically to keep them clean.

Stagnant Water in the Base or Drain Hose

If water is not draining fully from the machine after each cycle it becomes stagnant and produces a smell. A partially blocked filter or drain hose can allow a small amount of water to remain in the machine.

Infrequent Use

If the dishwasher is not used regularly, water sitting in the base and drain hose can become stagnant. Running a hot cycle at least once a week helps prevent this.

Clean the Filter Thoroughly

Remove the filter assembly, rinse it under running water and use a soft brush to remove any stubborn debris. Refit securely. This should be done at least once a month.

Clean the Door Seal

Wipe the door seal thoroughly with a damp cloth, paying particular attention to the folds along the bottom of the door where debris collects. A mild cleaning solution can be used if needed.

Clean the Spray Arms

Remove the spray arms, rinse them under running water and use a toothpick to clear any blocked holes. Refit securely before running the next cycle.

Run a Hot Maintenance Wash

Run an empty cycle on the hottest programme with a dishwasher cleaner tablet or a cup of white vinegar in the bottom of the tub. This removes grease, food residue and bacteria from inside the machine. Do this at least once a month.

Leave the Door Ajar After Use

Leaving the dishwasher door slightly open after a cycle allows moisture to escape and prevents the build-up of mould and bacteria inside the machine.

Check the Drain Hose

Ensure the drain hose is not partially blocked and that water is draining fully from the machine after each cycle. Stagnant water in the hose is a common source of odour.