Commercial Dishwasher Problems You Can Fix Yourself (And Those You Can’t)

A commercial dishwasher works hard to produce squeaky clean dishes. If maintained properly, a commercial dishwasher will last more than a decade. However, some unexpected problems can occur that will require a swift response to keep the business running. On the other hand, it could also be that the problem is complicated for you to call a commercial appliances repair expert. So, let’s take a look at some common commercial dishwasher problems that you can and cannot fix on your own.

Commercial Dishwasher Problems You Can Fix On Your Own

The Dishwasher Not Washing The Dishes Properly

One of the most common problems faced by commercial dishwashers is the dishes not being washed properly. This means the dishes coming out of the dishwasher are covered with residue. In this case, you will first need to check to make sure you are not doing anything to cause the malfunction.

For this, you will need to consult the user manual. Every machine functions in a different manner based on the manufacturer’s recommendations. Once you have consulted the user manual, inspect the machine for any visual signs and symptoms.

Check the spray arm by rotating them. If they struggle to spin, it means they are most likely covered with grease and debris, etc. Try cleaning the accumulation to see if the arm begins spinning. It can due to the usage of hard water as well. Try using a softener or a detergent to soften your water.

Leaking Dishwasher

If you come to find out that your dishwasher is leaking water onto the floor, the problem is most likely with the door and door gasket. Make sure to lock the door properly before the washing cycle begins. However, if your machine is a bit old, the gasket might need to be replaced.

There are several factors contributing to gasket replacement but it isn’t expensive. Also, check the float switch. Make sure that it’s not stuck in the down position. This will cause your machine to overfill and leak. If the button is stuck, try cleaning or simply replacing it.

The Dishwasher Doesn’t Dry The Dishes

Dishwasher Not Drying the Dishes is yet another common problem among commercial dishwashers. In most cases, the culprit comes out to be the heating element. Just like any other electrical component, there is no guarantee of how long the heating element will work.

If it is used for hours during the day, it will need to be replaced much sooner. If your heating element is working fine, you should check the high-limit thermostat. In case of a malfunctioning high-limit thermostat, it will cause the heating element to shut off before the dishes are fully dry.

You will need to consult the user manual to access the thermostat. Typically, it’s placed at the bottom of the dishwasher. And finally, check the rinse aid dispenser as well. If it’s empty, your dishes will come out dry.

Dishwasher Smells Bad

A smelly dishwasher means there is some food residue or leftovers stuck somewhere inside the machine. You will need to remove the access panel and take a look inside the machine. Make sure the machine is turned off from the main source. Clean the appliance thoroughly.

Also, check the heating element. It might be the Tupperware container falling onto the heating element and melting.

The Dishwasher Doesn’t Start

If the dishwasher simply fails to turn on, it means there is a problem with the flow of electric current. Make sure the dishwasher is properly plugged in. Then, check the circuit breaker for a blown fuse. It could also be that your machine is failing to turn on due to a safety feature.

For instance, if the door happens to be open, the machine will not start. If none of the factors seem to be the issue and your machine is struggling to start, the motor might be stuck. Try to access the motor and manually get it moving. But, turn off the power.

The Dishwasher Not Draining Properly

If you observe that your dishwasher is not draining properly, it could be that someone turned it off accidentally without letting the machine complete its cycle. As a result, you will have a pool of water flowing out as soon as you open the door.

In this case, you should try running the dishwasher a second time. Simply running a second cycle could fix the problem. Moreover, you should also check your garbage disposal. If the garbage disposal is clogged, the water from your dishwasher might not drain properly.

Commercial Dishwasher Problems That Need A Technician

Control Board Failure

While there are some problems that you can fix on your own, others will need a commercial garbage disposal repair Chantilly expert to solve them. For instance, the control board is the brain of the commercial dishwasher. Although it will last a lifetime but due to power surges and other factors, the control board may give up if a power surge somehow gets to it.

In this case, you will not be able to repair the control board and will need a replacement. The replacement is not the issue but finding the right replacement is. Try contacting the manufacturer or your local dealer.

If you are finding it difficult to source, consult a professional who might be able to order it for you. However, keep in mind if the dishwasher happens to be old, you might not be able to find a replacement. So, replacing the entire dishwasher might be the only option.

Dishwasher Making A Lot of Noise

If you have recently purchased a new commercial dishwasher and are making strange noises, you should turn it off and check for any blockages. However, if the machine happens to be a bit old, some internal components may be worn out.

You might be able to access the machine but finding the root cause of the problem may be complicated. During the process, there is also a risk of getting electrocuted. Therefore, if there is a squeaky or grinding noise coming from the dishwasher, you will need to get it fixed by an expert.

How Can I Prevent Commercial Dishwasher Problems?

You can prevent commercial dishwasher problems by scheduling regular maintenance. Dishwashers that receive professional maintenance are less likely to be a victim of common problems than those that are neglected. That said, make sure your commercial dishwasher receives annual maintenance and is thoroughly inspected.

This will help replace or repair any parts before they end up stalling the business. Neglecting such services may save you some money but will result in expensive damages down the road. So, think of it as an investment rather than an expense.


Fixing common commercial dishwasher problems may or may not be easy. If there is a problem related to leakage or drying, you could use the tips mentioned above to troubleshoot the issue. However, if there are strange sounds or a major malfunction, you will need to hire a commercial dishwasher repairs Tysons Corner technician.

Leave a Reply

Your email address will not be published. Required fields are marked *