Maytag Dishwasher Error Code F6 E4 — Water Temperature Too Low
What this means
The F6 E4 error code indicates the dishwasher is detecting that the incoming water supply is below the minimum temperature needed for effective cleaning. Most dishwashers require water to be at least 120°F (49°C) at the inlet. Low water temperature results in poor cleaning, grease residue, and unsanitized dishes.
Alternate codes: F6E4
Step-by-step fix
4 stepsCheck your water heater temperature
Verify your home water heater is set to at least 120°F (49°C). Many water heaters are set lower for safety, which can cause this error.
Run the kitchen hot water faucet for 2 minutes before starting the dishwasher to purge cool water from the pipes.
Test the hot water temperature
Run the kitchen hot water tap and measure the temperature with a thermometer. It should reach at least 120°F.
If the water never reaches 120°F, your water heater setting needs adjustment.
Adjust water heater if needed
If the water temperature is below 120°F, increase your water heater thermostat. Allow 30-60 minutes for the water to reach the new temperature.
Do not exceed 140°F to prevent scalding risks.
Check the hot water supply line
Ensure the dishwasher is connected to the hot water supply line under the sink, not the cold water line.
The hot water line is typically on the left side under the sink.
When to call a professional
If your water heater is set correctly but the water does not get hot enough, call a plumber to inspect the water heater.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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