Dishwasher Heating Element Not Working

Quick answer

To fix a dishwasher with a non-working heating element, first confirm the element is damaged or the thermostat is faulty. Turn off power, test the element with a multimeter, and replace if necessary. Check wiring and connections for issues.

Confirm the symptom

• Dishes are not fully dry after a cycle
• Dishwasher runs but doesn't heat water
• No visible heat from the element at the bottom of the tub
• Recent increase in energy usage without a change in load size

Tools and prep

• Multimeter
• Screwdrivers (flathead and Phillips)
• Owner's manual for the dishwasher model
• Safety gloves and goggles
• Turn off power at the circuit breaker
• Place a towel under the dishwasher to catch any leaks

Step-by-step troubleshooting

1. Check Power Supply
   Do: Verify the dishwasher is receiving power by checking the circuit breaker and outlet.
   Observe: Power is restored to the dishwasher.
   Means: The dishwasher has power and the issue is not with the electrical supply.
   Next: Test the heating element.
2. Test the Heating Element
   Do: Use a multimeter to test the heating element for continuity. Disconnect the wires first.
   Observe: The multimeter shows no continuity or a reading outside the expected range.
   Means: The heating element is faulty and needs replacement.
   Next: Replace the heating element.
3. Test the Thermostat
   Do: Test the thermostat using a multimeter to check for continuity.
   Observe: The thermostat does not show continuity when cold.
   Means: The thermostat is defective and needs replacement.
   Next: Replace the thermostat.
4. Inspect Wiring and Connections
   Do: Check all wiring and connections to the heating element and thermostat for damage or looseness.
   Observe: Damaged or loose wires are found.
   Means: The wiring issue is causing the heating element to malfunction.
   Next: Repair or replace damaged wires and secure connections.
5. Check the High-Limit Thermostat
   Do: Test the high-limit thermostat with a multimeter for continuity.
   Observe: No continuity is detected.
   Means: The high-limit thermostat is faulty and needs replacement.
   Next: Replace the high-limit thermostat.
6. Verify Water Inlet
   Do: Check if the water inlet valve is providing water to the dishwasher.
   Observe: Water is not entering the dishwasher properly.
   Means: The water inlet valve may be clogged or faulty.
   Next: Clean or replace the water inlet valve.

Common causes

Parts matching

When replacing parts for a non-working heating element, ensure compatibility with your dishwasher model.

• Heating Element - Match the part number from the owner's manual or appliance label.
• Thermostat - Verify the thermostat type and temperature rating.
• High-Limit Thermostat - Ensure it matches the specifications for your model.
• Wiring Harness - Confirm the wiring harness is compatible with the heating element and thermostat.
• Water Inlet Valve - Check the inlet valve part number for compatibility.

Purchase parts from the manufacturer or a reputable supplier to ensure quality and compatibility.

When to call a professional

• If the dishwasher still doesn't heat after replacing the heating element and thermostat
• If the control board is suspected to be faulty
• If you are unsure about electrical testing or wiring
• If water leaks are found during inspection
• If the dishwasher is under warranty and DIY repairs may void it

FAQ

Related guides

• dishwasher not heating water
• dishwasher not drying dishes

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