Why Won’t My Dishwasher Start?

A dishwasher that refuses to start can disrupt your daily routine. This issue may stem from something as simple as a loose connection or as complex as a malfunctioning component. Here’s a guide to the most common causes and solutions for a non-starting dishwasher.

Troubleshooting a Dishwasher That Won’t Start: Common Causes and Solutions

Why Won’t My Dishwasher Start?

1. Power Supply Issues

A lack of power is one of the most common reasons your dishwasher won’t start.

What to check:

• Ensure the dishwasher is securely plugged into the power outlet.
• Test the outlet by plugging in another appliance.
• Check your home’s circuit breaker to see if it has tripped.

2. Faulty Door Latch or Door Switch

Dishwashers are designed not to start unless the door is securely closed and latched. A malfunctioning door latch or switch can prevent the appliance from operating.

What to do:

• Inspect the door latch for visible damage.
• Listen for the “click” sound when you close the door.
• If the latch is damaged or the switch is not functioning, it may need to be replaced.

3. Delayed Start Feature or Control Lock

Some dishwashers have a delayed start feature or control lock that can prevent the dishwasher from starting immediately.

What to check:

• Ensure the delayed start feature is not activated.
• Look for a control lock indicator on the control panel. If it’s activated, consult your manual for instructions on how to disable it.

4. Blown Fuse or Tripped Thermal Fuse

A blown fuse or a thermal fuse that has tripped can cut power to the dishwasher, preventing it from starting.

What to do:

• Check your dishwasher’s user manual to locate the fuse.
• If the fuse is blown, it will need to be replaced. For safety, consult a professional technician.

5. Malfunctioning Control Board

The control board is the brain of the dishwasher, managing all its functions. If it’s faulty, the dishwasher may not start or respond.

What to do:

• Check for visible signs of damage, such as burns or loose connections.
• If the control board is damaged, it will likely need to be replaced by a professional.

6. Problem with the Timer

In older models, a mechanical timer controls the dishwasher’s cycles. If it’s faulty, the dishwasher may not start.

What to do:

• Listen for unusual ticking or clicking sounds from the timer.
• If the timer is not functioning properly, consider having it repaired or replaced.

7. Clogged Drain or Pump

If the dishwasher detects a clog in the drain or pump, it may prevent the appliance from starting.

What to do:

• Check the drain hose for blockages.
• Clean the filter and inspect the pump for debris.
• Clear any clogs before restarting the dishwasher.

8. Faulty Motor or Motor Start Relay

The motor powers the dishwasher’s functions, and the motor start relay helps the motor engage. A fault in either can prevent the dishwasher from starting.

What to do:

• Listen for humming or clicking sounds when attempting to start the dishwasher.
• If the motor or relay is defective, professional repair or replacement may be necessary.

Preventing Future Start-Up Issues

1. Check Connections Regularly: Ensure the power cord, outlet, and circuits are in good condition.
2. Clean the Dishwasher Monthly: Remove food debris and buildup to maintain optimal performance.
3. Inspect Components Periodically: Check the door latch, timer, and control panel for signs of wear or damage.

If these steps don’t resolve the issue, it’s time to seek professional help. At Manny Appliance Repair in Chicago, we specialize in diagnosing and fixing dishwasher problems.

📞 Call us now at +1 (847) 257-6387 for prompt service, or
💻 Book your appointment online today and let our experts get your dishwasher running smoothly again!