FD
LG Dishwasher
Severity: ModerateWhat Does This Error Mean?
The FD error on an LG dishwasher stands for Fan or Drying error. It means the drying fan motor is not working properly at the end of the wash cycle. Your dishes may come out wet because the fan is not moving warm air through the tub to dry them.
Affected Models
- LDP6797ST
- LDFN4542D
- LDT5678SS
- LDT7808ST
- LG dishwashers with a built-in drying fan
Common Causes
- The drying fan motor has failed and is no longer spinning
- A piece of debris or a broken utensil is blocking the fan blade
- The wiring connector to the fan motor has come loose or corroded
- The control board has failed and is not sending power to the fan after the wash cycle
- Condensation buildup has corroded the fan motor's electrical contacts
How to Fix It
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Press and hold the Start button for 3 seconds to cancel the current cycle.
The FD error appears at the end of the cycle when the fan should activate.
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Open the door and check if there are any utensils or items sticking out near the door vents.
Thin utensils can sometimes poke into the vent area and obstruct the fan.
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Unplug the dishwasher from its power outlet, wait 2 minutes, then plug it back in.
This resets the control board and sometimes clears a false FD error caused by a sensor glitch.
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Run a new short cycle and wait to see if the FD error returns at the end.
Pay attention to whether dishes come out dry — a working fan makes a noticeable difference.
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If the FD error persists and dishes remain wet every cycle, schedule a technician visit.
Continuing to use the dishwasher with a failed drying fan will not cause further damage, but dishes will always be wet.
When to Call a Professional
If a reset does not clear the FD error, a technician needs to inspect the drying fan motor. Accessing the fan motor usually requires removing the inner door panel. This is not a DIY-friendly repair for most people. Expect repair costs of $100–$200 for fan motor replacement including labor.
Frequently Asked Questions
Can I still use my LG dishwasher if it shows the FD error?
Yes — the dishwasher will still wash and rinse normally. The only impact is that dishes will come out wet instead of dry. You can use the heated dry setting if available, or simply air dry your dishes by leaving the door cracked open after the cycle.
Does the FD error mean my dishes are not being washed properly?
No — the washing and rinsing parts of the cycle are unaffected by the FD error. The FD error only indicates a problem with the post-wash drying fan. Your dishes are being cleaned normally — they just need extra drying time.
How does the drying fan work in an LG dishwasher?
At the end of the wash cycle, the LG dishwasher activates a small fan inside the door. The fan pulls humid air out of the tub and helps circulate drier air in. This speeds up drying compared to simple condensation drying. When the fan fails, dishes — especially plastics — stay noticeably wet.