Error Code d90

FlowSense duct blockage – ductwork is approximately 90% blocked

Also displayed as: d90

How to Fix

1. 1

   Do not use the dryer until the exhaust system has been cleaned and/or repaired – severely restricted exhaust is a fire hazard.

2. 2

   Inspect and clean the lint filter (clean after every load).

3. 3

   Check all external ductwork for kinks, crushing, or tears. Straighten or replace as needed.

4. 4

   Inspect the vent hood at the exterior of the home for lint blockage, damage, or obstruction.

5. 5

   Verify the duct inside the dryer is properly connected to the blower assembly (may have dislodged during delivery/installation).

6. 6

   Check that no screen is installed on the end of the air duct (screens trap lint).

7. 7

   Verify duct length and elbow count do not exceed maximums: 0 elbows = 65 ft max (4-inch rigid), 1 elbow = 55 ft, 2 elbows = 47 ft, 3 elbows = 36 ft, 4 elbows = 28 ft.

8. 8

   Check for foreign material inside the blower assembly; clean if found.

9. 9

   If no physical blockage is found but error persists → Perform Installation Test (press Power then hold Wrinkle Care + Settings; press START/PAUSE).

10. 10

    If error still persists after all checks → Default off duct blockage detection by pressing and holding Steam + Energy Saver for 3 seconds ('On'/'Off' displayed); consider replacing main PCB if fault is erroneous.

This Error Applies To

LG DLE8400VE Series Dryers