F3E1

Thermistor/OWI Sensor Failure

Description

The combined thermistor and optical water indicator sensor has failed or is giving abnormal readings.

Appliance Error Codes Details

Error Code
F3E1
Error Name
Thermistor/OWI Sensor Failure
Appliance Type
dishwasher
Brand
Whirlpool
Severity
medium

Possible Causes

  • Water circulation problems
  • Drain system blockage
  • Heating element failure
  • Control system malfunction
  • Door latch or seal issues

Step-by-Step Solution

  1. 1. Clean filters and spray arms
  2. 2. Check water supply temperature
  3. 3. Inspect drain hose and connections
  4. 4. Verify proper loading and detergent
  5. 5. Test cycle selection and settings

Additional Troubleshooting

1. Turn off power to the dishwasher for 5 minutes and restore it. 2. Run a cycle to see if the code returns. 3. If it persists, the sensor connection or the sensor itself is faulty. 4. Contact service to inspect or replace the sensor.

When to Call Service

  • Pump motor replacement should be done professionally
  • Control system diagnostics require specialized equipment
  • Plumbing connections may need professional installation

Prevention Tips

  • Clean filters weekly
  • Scrape dishes before loading
  • Use proper detergent amount
  • Run hot water before starting cycle
  • Check drain hose monthly

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Fact-checking completed

Verified by: Pavel Volkov
Created:
Last updated:
Information verified against official sources

Official Sources

Official Manufacturer Service Manuals

Service manuals and technical documentation from appliance manufacturers

Original equipment manufacturers official documentation

Industry Standards Organizations

International standards for electrical appliances and error codes

International Electrotechnical Commission standards