Dishwasher Not Draining? Here's When to Call a Plumber

At the end of a long day, when dinner is done and you’ve loaded the dishwasher, the last thing you want to find is that same dishwasher not draining properly at the end of the wash cycle.

You hit start and expect it to take care of the mess while you relax. But when the cycle is done and you open the dishwasher door, you’re met with a puddle of standing water and a dishwasher that just isn’t playing nicely. Ugh!

There are many reasons why this workhorse of the kitchen can get stuck. Sometimes it’s just food debris in the pump area, but other times it’s a bigger issue with a twisted drain hose or pump. Let’s find out why and when you’ll need a plumber.

Why Your Dishwasher Won’t Drain Properly

Just as there can be numerous causes behind a dishwasher not filling properly, there can also be several possible reasons why you might find your dishwasher not draining properly. Thankfully, you can fix most with a little troubleshooting. Here are the common offenders:

• Clogged dishwasher filter: Food, grease and other debris can leave you with a clogged filter that prevents water from draining from your dishwasher completely.
• Twisted or blocked drain hose: A kinked or obstructed dishwasher drain hose will stop water flow altogether.
• Blocked pump or pump area: Food debris or foreign objects in the pump area may hinder its ability to work properly.
• Sink drain issues: A blockage in the sink drain can back up into the dishwasher.
• Faulty drain valve: A damaged or stuck drain valve will prevent your dishwasher from draining completely.
• Electrical faults: Problems with the float switch or control board can also result in drainage issues.

Fixing these issues early on, rather than putting them off for a rainy day, will save you from bigger headaches later. If these don’t work, it’s time to call a plumber.

How to Check for Simple Blockages in a Clogged Dishwasher

If you find your dishwasher not draining properly, the best first step is to check for simple blockages.

Start with the filter unit. Pop on some protective gloves and carefully remove the filter. Clear out any food debris or foreign objects that might possibly restrict water flow.

Check the drain hose for kinks or twists that might stop water from draining. The pump area could also be the issue, so inspect it for trapped food scraps or other debris. Don’t forget the sink, as blockages in the drain can back up into the dishwasher.

Use a soft sponge or teaspoon – even a coat hanger – to gently clear blockages. Finally, always check the owner’s manual for specific instructions.

How to Reset Your Dishwasher

Resetting your dishwasher can sometimes fix draining issues by clearing software glitches or stuck cycles. Try this:

1. Check the owner’s manual: Look up the instructions for your specific model as resetting methods vary.
2. Find the reset button: Many dishwashers, including those in the Bosch dishwasher range, have a reset button on the control panel.
3. Press and hold: Hold the reset button for a few seconds until you hear a beep or see the lights flash.
4. Turn off the power: If your dishwasher doesn’t have a reset button, switch it off at the power source for 10 minutes to do a full reset.
5. Restart the machine: After resetting select a quick cycle to see if the dishwasher is draining.

If resetting doesn’t fix the issue, the problem is probably mechanical. In this case, a professional repair service is likely the best solution.

The “Repair vs Replace” Decision

When you find your dishwasher not draining as it should, the decision to repair or replace it can be a tough call.

Start by thinking about the age of your appliance; most dishwashers have a lifespan of 8-12 years. If yours is nearing the end of its life and constantly breaking down, replacing your dishwasher may be more financially beneficial than frequently having it repaired. Factor in the cost of repairs especially for major components like the dishwasher pump or drain hose which can add up quickly.

Newer models are often more energy efficient and may prove a more worthwhile investment, especially with their improved water flow and advanced filter systems. If the repairs are minor like clearing a blocked filter they’re usually more cost effective and straightforward enough to tackle yourself.

Why You Should Always Use a Licensed Plumber

Replacing a dishwasher may seem simple, especially if you’re swapping a like-for-like model of similar age and size. However, in many cases, it’s a task best handled by a licensed plumber.

Modern dishwashers have complex connections to the sink drain, drain hose, and water supply that must be installed correctly to ensure proper water flow and avoid leaks.

A licensed plumber ensures the dishwasher’s drain system is set up to prevent blockages and can handle tricky components like the drain pump, air gap and power supply. For essential plumbing work that requires connections to your mains water supply, you’re required by law to use a licensed plumber.

Persistent issues such as standing water, a blocked pump, or a damaged drain valve require professional attention. Attempting DIY fixes can lead to costly mistakes or further damage. Hiring an expert guarantees a safe, efficient installation and lasting performance for your appliance.

Essential Maintenance Tips

To keep your dishwasher cycle running as smoothly as possible, regular maintenance and simple preventative measures are essential. Here are some tips to make sure it drains and runs well:

• Clean the filter system: Remove and rinse the dishwasher filter unit to clear out food scraps and blockages.
• Check the drain hose: Make sure it’s not twisted or blocked as this can stop water flow.
• Run an empty cycle with baking soda: This will break down grease and other debris in the dishwasher’s drain.
• Scrape off food scraps: Don’t let large pieces of food get stuck in the pump area or block the filter.
• Run very hot water occasionally: A hot cycle will dissolve grease and clean out the dishwasher’s interior.

By following these simple steps you’ll get your dishwasher to drain and run well for longer.

Run Your Dishwasher Smoothly

A dishwasher not draining can certainly put a dampener on your day. However, knowing what to look for and when to act can make all the difference.

Simple steps like cleaning the filter unit, checking the drain hose and ensuring good water flow can fix minor issues. For more stubborn problems like a blocked pump or damaged drain valve call a licensed plumber.

If your dishwasher is old or breaking down regularly it may be more cost effective to replace it with a new one. Maintenance, smart troubleshooting and professional help when needed will have your appliance running smoothly for years to come.

Don’t let draining problems get you down – act and enjoy trouble free dishwashing!

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