Common Dishwasher Problems and Solutions

  • December 10th, 2009
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  • Posted in dishwashing

Run the dishwashing machine. Woman’s finger pressing the Start button.

If your dishwasher isn’t working properly, you’ll soon start to realise how much you rely on it in your day-to-day life.

A dishwasher takes away the need to spend hours washing pots and acts as a small luxury for your home. But what happens if it suddenly breaks down and you’re in urgent need of a fully-functioning one?

Although it may cause concern, many dishwasher faults have easy solutions that don’t warrant an engineer visit to complete the repair.

We share some of the most common dishwasher problems and how to resolve them quickly.

Please remember that dishwashers should be turned off at the mains before attempting to repair!

Why won’t my dishwasher drain?

If your dishwasher won’t drain, you may be left with a small pool of water in the bottom after a completed cycle. This can happen for a few reasons:

The filters in the machine could be clogged. These are usually found in the base of the machine and can be kept in good condition by regularly clearing any dirt or grime away from the area, keeping it free of debris.

If the filters are clear, the fault may lie with the drain hose being blocked. To check that this is clean, try disconnecting the drain hose and blowing through it to clear out any old food.

Why is my dishwasher not drying dishes properly?

Ensure that the dishes in your dishwasher have been loaded correctly and are allowing water to move freely.

If this has been done, but the issue is not solved, then the amount of rinse aid you are adding may be why your dishwasher isn’t drying dishes properly.

Rinse aid is designed to ensure that your dishes dry properly once the dishwasher has completed its cleaning cycle. It works by breaking the tension of water on the surface of your dishes, which then makes the evaporation process more effective, and helps dishes to dry properly.

Dishwasher not heating effectively

The heating element of your dishwasher may be the reason why it is not heating properly.

This element is visible in the tub and controls the temperature of water being injected into the machine. If your dishwasher is not heating effectively, then this heating element may be broken or suffering from an electrical fault.

If this is the case, the machine will require attention from a qualified engineer and a repair must be completed by an electrician.

Why is my dishwasher not filling with water?

The woman pushed the dirty dishes in the dishwashing machine.

If the anti-flood protection has been activated on your machine it may not fill with water, however this can easily be repaired by removing the plinth from beneath the dishwasher door.

If this isn’t the case, there may be a blockage between the water pump and dishwasher tub. This can be fixed by removing the spray arms and running the dishwasher for a short amount of time to clear blockages.

Why is the cleaning quality of my dishwasher poor?

Your dishwasher may not be cleaning dishes properly due to incorrect loading.

If this is not the case, try washing the dishes on a longer cycle or at a higher temperature with a stronger washing detergent.

If you have done this, and are still experiencing the problem, then the symptom is harder to diagnose without an engineer stripping down the appliance. If this is the case, contact us for help.

Why does my dishwasher make my glasses cloudy?

Dishwasher washing

In hard water areas limescale build up can be a cause of cloudy glassware. It is recommended that you experiment with the dosage of rinse aid your appliance dispenses, until you find a setting which suits your requirements and produces better results.

Why does my dishwasher make my cutlery rusty?

This issue is usually caused when the cutlery has been in contact with acid or salt for a long period of time, for example tomato ketchup or lemon juice can produce this issue.

Why is my dishwasher making noise?

A noisy dishwasher can usually be put down to a faulty, or blocked drain pump. Disconnecting the pipe and blowing through it could clear this out and solve the problem.

Why is my dishwasher tripping electrics?

If your dishwasher is causing your electrics to trip, this can indicate that the heater in the machine is broken. This would require the attention of a professional engineer.

Why is my dishwasher leaving white film on my glasses?

If your dishwasher is leaving white film on your glasses, then it usually means that the salt dispenser in the machine is broken and will need replacing.

If this article has not helped you to diagnose the issue with your dishwasher, or you are unable to fix the problem on your own, book a dishwasher repair engineer today. Our friendly, knowledgeable team are always ready to help!


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