Whirlpool Dishwasher Not Turning On? Diagnose and Fix in 6 Steps
Has your Whirlpool dishwasher suddenly stopped turning on? Few things are more frustrating than a malfunctioning appliance, especially one crucial for handling messy post-meal cleanups. Before despairing, know that systematically troubleshooting a few key dishwasher components often reveals straightforward fixes you can implement yourself.
Step 1: Verify Power Supply and Electrical Connections
First things first, confirm that the dishwasher is actually receiving power. Make sure the power cord is plugged securely into the wall outlet and that electricity is flowing to the outlet. Flip any tripped circuit breakers back to the ON position. If you have doubts about the dishwasher's electrical setup, play it safe by consulting a professional electrician.
Step 2: Evaluate Control Settings
With power confirmed, the next step is double-checking the dishwasher's front control panel settings. A few particular settings could prevent the dishwasher from powering up:
- Control Lock - This safety feature disables controls to prevent accidental operation. Follow your model's steps to disengage the lock if enabled.
- Sleep Mode - An energy-conserving mode that delays operation until senses significant water usage elsewhere. Turn off to override.
- Delay Wash - Delays start time of dishwashing cycle. Disable setting if currently scheduled.
After adjusting settings accordingly, try rebooting the dishwasher to see if operation resumes as expected.
Step 3: Inspect Dishwasher Door and Latch
Next, examine the dishwasher's front door and latching mechanism. If misaligned or unable to fully close, this could prevent startup. First ensure no dish racks or utensils are obstructing the door's range of motion. Test closing to confirm the door successfully latches and creates an airtight internal seal.
Use a multimeter to check the continuity of the door latch switch if issues persist. If the readings indicate the micro switch is damaged, replacement will be required. On some Whirlpool models, adjusting the flexible strike on the tub can also help the door close properly again.
Step 4: Assess Water Supply Lines
A lack of water flow also hinders regular dishwasher operation. Start by turning the supply valve counterclockwise to open and ensure water lines are pressurized. Inspect the drain line at the sink connection and straighten out any kinks in the hose.
If the dishwasher has electrical heating, vigorously flowing water acts as a crucial cooling mechanism. Verify the continuity of the thermal fuse using a multimeter. If the fuse shows no continuity, replacing this inexpensive part typically restores normal function.
Thermal Fuse Explained
The thermal fuse blows and cuts power when internal temperatures exceed safe operation limits. This helps prevent fire hazards or plastic component damage. No continuity indicates the fuse sacrificed itself to protect the dishwasher.
Step 5: Test Heating Element and Thermistor
Problems with the heating element or associated thermal sensor, called a thermistor, could impact operation too. Use a multimeter again to check the electrical resistance specs on each component and determine if performance degraded. If readings fall outside normal parameters, replacement is advised.
Heating Element and Thermistor Details
The heating element heats water to high temperatures for maximum sanitization during wash cycles. The thermistor communicates temperature data to the control board to modulate heating element output.
Step 6: Evaluate Major Electronic Components
Lastly, rule out issues with larger electronic parts like the touchpad control, timer assembly, drive motor, or control board itself. Consult Whirlpool's detailed troubleshooting guides or connect with a technician to pinpoint the problematic part. Thorough diagnostics are key before replacing expensive components.
Important: Always disconnect the dishwasher's power supply via breaker or unplugging before replacing any electrical parts for maximum safety.
Following our structured six-step guide empowers you to revive an unresponsive Whirlpool dishwasher through methodical self-diagnosis. Confidently explore DIY fixes before calling costly appliance repair services. However, for complex electrical issues or convoluted breakdowns, don't hesitate leveraging a trusted technician.