The dishwasher makes a loud noise when filling with water

Your irreplaceable household assistant - the dishwasher - has started making loud noise when filling with water. This is an alarm indicating a possible malfunction of the device.

You should not ignore this warning, since the humming of the machine can lead to serious damage. To prevent this from happening, you can independently diagnose, identify the cause and fix the problem. In this article, let's look at how to restore the dishwasher's functionality without the help of a technician.

Reasons for the loud noise of the dishwasher when filling with water

A strong hum when starting a dishwashing machine is most often associated with a problem with the water supply. Experts include the following common causes of loud noise:

1. Clogged fine and coarse filters. Residues of food on the dishes cause blockages, as a result of which water does not flow well into the sprayer. The ingress of cereal residues (rice, buckwheat, etc.) and fruit seeds can also interfere with the rotation of the impeller or lead to damage to its blades.
2. Weak water pressure. Insufficient water supply pressure can cause a humming noise when starting the machine.
3. The water supply hose is kinked or dirty.
4. Incorrect loading of dishes or foreign objects.
5. Violation of the installation rules of the dishwasher leads to vibration and strong hum when the device operates.

The above-described reasons for the malfunction of the dishwashing machine can be easily eliminated without requiring special skills. However, loud noise when the dishwasher draws water can also be caused by more serious defects:

• breakdown of the sump pump;
• circulation pump bearing wear;
• intake valve malfunction.

If you suspect that your dishwasher is not operating properly, you must immediately take corrective action. Otherwise, this may lead to serious damage to the device.

How to check and restore your dishwasher yourself

You can install and eliminate the source of loud noise in the dishwasher yourself, without involving specialists. First you need to check the simplest reasons for malfunction: the presence of debris, low (high) pressure in the pipes, kinks in the hose. To do this, you need to clean the machine by thoroughly rinsing the contaminated parts under running water, position the hose correctly, or increase the pressure in the water supply using a pump.

To eliminate more serious problems, we suggest using the advice of experienced craftsmen: they will help you easily restore the functionality of your kitchen assistant. Important condition:

• You must strictly follow the instructions for eliminating breakdowns in one or another part of the device.

How to check the condition of the atomizer

Before inspection, you must disconnect the dishwasher from electricity. If it is built into the kitchen cabinet, you need to remove it from there.

To check the condition of the sprayer, follow these steps:

• open the door and remove the dish basket;
• unscrew the fastening nut, remove the nozzles;
• rinse under running water, clean clogged nozzles with toothpicks;
• Unscrew the drain filter and mesh, wash thoroughly under high water pressure.

Dry the washed and cleaned parts, then reinstall. If the problem is not solved, then the fastenings may have failed. Often after prolonged use they pop out and water does not flow into the nozzle. In this case, it is worth replacing the fastening part with a new one, which is included in the repair kit.

How to check the impeller

The impeller may not work due to solid objects or glassware fragments that block the part. To check the pump impeller, you need to scoop out the remaining water from the place for the filter, pull the damper to the side, and then towards yourself. Check the impeller by removing any accumulated debris. If the blades are damaged, replace the part with a new one.

How to replace a faulty intake valve

If the dishwasher makes noise and clicks while drawing water, but no water flows into the hopper, then the fill valve, which is located in the lower part of the housing, is faulty. The electrical or mechanical part of the water supply valve may fail.

Anyone can replace a broken part:

• Just unscrew the screw and disconnect the wiring;
• to check the mechanical part, you need to apply operating voltage: it will open if the mechanism is not damaged;
• To diagnose the electronics, you need to measure the resistance of the valve coil using a multimeter: a value from 500 to 1500 Ohms is considered normal.

If the water intake valve is faulty, replace it with a new one.

Important! Carry out testing with the power supply turned off and the wires disconnected from the valve coil terminals.

How to replace a worn bearing

Frequent use of the dishwasher leads to wear on the bearings of the circulation pump. The malfunction manifests itself 2-3 years after purchase with loud noise when filling with water and buzzing.

There is no point in delaying troubleshooting; it is better to immediately dismantle the pump using the following algorithm:

• disconnect the machine from the power supply and remove the hoses connecting to the water supply;
• remove the appliance from the kitchen cabinet and place it in a convenient place;
• unscrew the screws holding the side walls and remove them;
• turn the car upside down, remove the sound insulation;
• carefully unhook the springs from the smooth door opening mechanism (installed on the side walls), holding the door so that it does not fall;
• lift the pallet by unlocking the hooks with a screwdriver and disconnecting the plugs with wires;
• disconnect the water pipe, remove the pan and put it aside;
• remove the old circulation pump.

The next step is disassembling the pump. To do this, follow these steps:

• disconnect the block with the heating element from the engine;
• remove the impeller and remove the anchor using pliers;
• Using tweezers, remove the cause of the malfunction from the base of the armature - the rear support bearing - a small ring made of graphite;
• check the integrity of the rubber gasket: if necessary, replace it with a new one;
• install a new bearing, reassemble the circulation pump in reverse order.

Reinstall the pump and reassemble the dishwasher.

How to check the drain pump

You can check the operation of the pump (drain pump) without disassembling the dishwasher. To do this, you need to listen to the sounds that the unit makes when draining water. The machine is making a loud noise, the sound of water is almost inaudible - the pump is damaged and needs to be replaced.

Attention! Do not tilt the operating unit to look into the pan. This may disrupt the operation of the sensors and lead to more serious damage.

Replacing the drain pump is a simple matter. It will be more difficult to disassemble and reassemble the dishwasher.

To get to the pump, you need to turn off the power to the dishwashing unit and disconnect the hoses. Lay down an old rag and place the car on it on the back wall. This way you don’t have to completely disassemble the dishwasher, since you can get to the drain pump through the bottom.

Then follow these steps:

• find the contacts on the pump body;
• Place the probes of the multimeter, set to the lowest Ohm value, on the contacts;
• measure the value: permissible norm up to 1000 Ohm;
• if the indicators are normal, all you have to do is unscrew the drain pump to clean it and check if there is any object stuck in the impeller.

If necessary, replace the part with a new one. Reassemble the dishwasher in reverse order.

Attention! If after replacing the above parts - bearings, pumps, valves and other parts - the machine continues to hum, contact a professional electrical repairman.

Tips for troubleshooting your dishwasher yourself

Very often, dishwasher malfunctions are caused by violation of operating rules and improper care of the appliance. Electrical repair experts offer the following tips to help avoid loud noise when operating the device:

1. It is important to install the dishwasher correctly. To do this, the height of the legs must be adjusted using a level. This will eliminate vibration and excess noise.
2. Place dishes in accordance with the recommendations specified in the operating instructions for the appliance. Do not allow the dishes to touch each other, secure cutlery (forks, spoons, knives) in the basket, do not place foreign objects.
3. If you rarely use the dishwasher, then do preventative maintenance once a week. Add/drain additional water to maintain moisture in the seals. This will help extend the life of the kitchen assistant.
4. Clean filters regularly. After each use, remove food debris and rinse under running water.
5. Wash the moving jets once a week and clean the filtration system at least once a month. This will prevent scale formation.

Following these rules will prolong the life of your kitchen assistant. If serious problems occur, you should contact a professional.