d90

Exhaust Duct Clogged

Description

The dryer detected restricted airflow because the exhaust duct is heavily clogged with lint.

Appliance Error Codes Details

Error Code
d90
Error Name
Exhaust Duct Clogged
Appliance Type
dryer
Brand
LG
Severity
medium

Possible Causes

  • Heating system malfunction
  • Airflow restriction
  • Temperature sensor failure
  • Control board issues
  • Mechanical component failure

Step-by-Step Solution

  1. 1. Clean lint filter and exhaust vent
  2. 2. Check airflow and ventilation
  3. 3. Verify proper loading capacity
  4. 4. Test heating elements
  5. 5. Inspect door seals and latches

Additional Troubleshooting

1. Clean the lint filter before every cycle 2. Disconnect and clean the exhaust duct and vent hood 3. Make sure the duct is not crushed or excessively long 4. Restart a cycle to confirm airflow is restored

When to Call Service

  • Heating element replacement requires technical expertise
  • Gas dryer repairs must be done by certified technicians
  • Control board issues need professional diagnosis

Prevention Tips

  • Clean lint filter after every load
  • Clean exhaust vent annually
  • Avoid overloading
  • Use appropriate cycle settings
  • Check vent hose connections

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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