Dishwasher Not Heating or Drying

Quick answer

If your dishwasher isn't heating or drying, check the heating element for damage, ensure the water temperature is at least 120°F, and test the thermostat. Replace faulty parts as needed.

Confirm the symptom

• Dishes remain wet after a full cycle
• No visible heat during the drying phase
• Dishes feel cool to the touch post-cycle
• Dishwasher runs normally but doesn't dry

Tools and prep

• Screwdriver set
• Multimeter
• Thermometer
• Rubber gloves
• Safety goggles
• Owner’s manual
• Turn off power at the circuit breaker before starting

Step-by-step troubleshooting

1. Check Water Temperature
   Do: Test the hot water temperature at the sink connected to the dishwasher.
   Observe: Water should be at least 120°F (49°C).
   Means: Cold water can prevent proper heating and drying.
   Next: If below 120°F, adjust your water heater settings.
2. Inspect Heating Element
   Do: Visually check the heating element at the bottom of the dishwasher for cracks or burns.
   Observe: Damaged or broken element.
   Means: A faulty heating element won’t generate heat.
   Next: Test the element with a multimeter for continuity.
3. Test Heating Element with Multimeter
   Do: Set the multimeter to ohms and touch the probes to the heating element terminals.
   Observe: A reading of 10–30 ohms is normal; no reading means the element is bad.
   Means: No continuity indicates a failed heating element.
   Next: Replace the heating element if faulty.
4. Check Thermostat
   Do: Locate the thermostat (usually near the heating element) and test it with a multimeter.
   Observe: No continuity or inconsistent readings.
   Means: A faulty thermostat can prevent the heating element from activating.
   Next: Replace the thermostat if it’s not working.
5. Inspect Drain Hose
   Do: Check the drain hose for kinks or blockages.
   Observe: Clear, unobstructed hose.
   Means: A clogged drain can cause water to remain in the dishwasher, preventing drying.
   Next: Clear any obstructions or replace the hose if damaged.
6. Check Vent (if applicable)
   Do: Inspect the dishwasher vent for debris or blockage.
   Observe: Clean vent with no obstructions.
   Means: A blocked vent can trap moisture and reduce drying efficiency.
   Next: Clean the vent thoroughly.

Common causes

Parts matching

Common parts needed for a dishwasher not heating or drying:

• Heating Element
• Thermostat
• Thermistor
• Drain Hose
• Vent Assembly

Always refer to your dishwasher’s manual to confirm the correct part numbers for your model.

When to call a professional

• If you’re unsure about electrical testing or component replacement
• If the problem persists after replacing all suspected parts
• If the dishwasher is under warranty and you don’t want to risk voiding it
• If you detect a burning smell or electrical issues during inspection

FAQ

Related guides

• dishwasher not drying dishes

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