E66

Heating Relay Error

Description

The state of the heating-element relay does not match the signal expected by the control board.

Appliance Error Codes Details

Error Code
E66
Error Name
Heating Relay Error
Appliance Type
washing_machine
Brand
Electrolux
Severity
medium

Possible Causes

  • Water supply issues
  • Drain blockage or pump failure
  • Control board malfunction
  • Sensor failure
  • Mechanical component wear

Step-by-Step Solution

  1. 1. Check power supply and reset if needed
  2. 2. Inspect water supply and drainage
  3. 3. Clean filters and check for blockages
  4. 4. Verify proper loading and detergent usage
  5. 5. Test cycle settings and controls

Additional Troubleshooting

1. Unplug the machine for several minutes to reset the electronics. 2. Start a wash with heating and check whether the error returns. 3. This fault involves the heating relay on the control board. 4. Contact a service centre to inspect the relay and heating circuit.

When to Call Service

  • Call service for electrical or control board issues
  • Professional diagnosis needed for mechanical failures
  • Water level or pressure sensor replacements require expertise

Prevention Tips

  • Clean water inlet filters monthly
  • Use appropriate detergent amounts
  • Check hoses annually for wear
  • Balance loads properly
  • Schedule annual maintenance

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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