A dishwasher is a valuable household appliance that helps you wash and dry all of your dishes. It thus reduces a large portion of your task and makes household tasks much less time-consuming.

One of the most common issues that can arise in this appliance, making things difficult for you, is the dishwasher not filling. The dishwasher not filling may slow down the washing process, so it is critical to understand the causes and solutions to this problem.

For your convenience, they are listed below. 

Inlet Valve for Water

The water inlet valve, which is monitored by the timer or control circuits, is used to fill the dishwasher with the appropriate amount of hot water.

The valve will be installed behind the lower access panel and will be wired with an outlet hose to the tub and a hot water inlet from the household supply.

If your dishwasher does not fill, first check the inlet supply to ensure you have enough water pressure. 

Inspecting a dishwasher water inlet valve:

• Before you begin, unplug your dishwasher and turn off the water supply.
• Find the water inlet valve.
• It’s usually located on the lower left side of your dishwasher.
• To find it, you’ll probably need to remove the lower access panel.
• Visually inspect the water inlet valve for signs of damage, wear, or cracking.
• If your valve exhibits any of the symptoms listed above, you will require a replacement water inlet valve. 

The door switch is broken.

Another reason for the dishwasher not filling is trouble with the door switch.

If the door switch malfunctions, the dishwasher will not be able to fill.

The door switch mechanism is located behind the door panel and at the top of the door.

To see if this part is working properly, you must first separate the inner door from the outer door. After that, disconnect the wires from the switches. Check the continuity with a multimeter now. 

The Float Switch

When the float activates the float switch, power to the water inlet valve is interrupted, and the flow of water into the dishwasher is stopped.

How to Use a Multimeter to Test a Dishwasher Float Switch:

• Before beginning this checking, detach your dishwasher from the power supply; you will be working with electrical components.
• Locate and disconnect the float switch.
• It is located behind the lower access panel, directly beneath the float assembly.
• When disconnecting the wires from the switch, take care not to pull directly on the wires. 
• After you’ve removed it, test the float switch by connecting the probes to the switch’s terminals with your multimeter set to Rx1.
• This should yield a result of zero or infinity.
• While the probes are still in contact with the terminals, press the switch’s button to change the reading to the opposite extreme (from zero to infinity or infinity to zero).
• If your test results differ from the above, you will need to replace the float switch. 

Door Knob

The door switch is a simple on/off switch that prevents the dishwasher from operating while the door is open.

The dishwasher will not fill with water if the door switch or switches fail.

How to Use a Multimeter to Test a Dishwasher Door Switch:

• Before you begin, unplug your appliance because you will be working with electrical components.
• The door switch is usually located at the top of the door, behind the door panel.
• To access the switch, you must first separate the inner door from the outer door.
• Once you’ve found it, remove the door switch to check for continuity. 
• Test for continuity with a multimeter set to Rx1 by touching one probe to the COM terminal and the other probe to the N.O. Terminal.
• Your reading should be infinity if the actuator is not pushed in.
• Keep the probes on the terminals and press in on the actuator until you hear a click; this should reset the reading to zero.
• If your test results do not match those listed above, you will need to replace the door switch. 

Change the Control Panel

If the control panel on your dishwasher is damaged or has come loose from the unit, it may be failing to signal the start of a cycle.

Furthermore, a single or group of buttons may become stuck, preventing the dishwasher from starting.

A flashing light on the control panel indicates that a button is stuck.

Your control panel may need to be replaced if it is damaged, loose, or stuck. 

The Electronic Control Board must be replaced.

All of the dishwasher’s many moving parts are controlled by the electronic control board.

If the electronic control board receives power but fails to communicate with the dishwasher’s other components, it could be damaged or defective. It must be replaced in this case. 

Change the Timer

The dishwasher timer is linked to several other parts of the dishwasher, including the wash pump, drain pump, water inlet valve, and heating element.

The timer controls when each component operates during a cleaning cycle.

During a cycle, the timer advances the control panel knob to determine when the cycle should end.

Replace the timer if it does not move the control knob or does not operate other dishwasher components. 

The Water Inlet Assembly should be changed.

The water inlet assembly draws water from the water inlet valve and directs it through an open vent toward the interior of the dishwasher tub.

Clear out any obstructions in the vent leading to the dishwasher tub or the hose connecting the water inlet valve and water inlet assembly if they are preventing water from flowing freely into the tub.

The water inlet assembly needs to be replaced if there are any visible signs of damage.