LG Dryer Error Code PF: Meaning and Fix

Reading the dryer display
On a dryer the code shows in the time-remaining window or as blinking status lights. Write down the characters before you press anything, because starting a new cycle usually clears the display. LG codes are short letter pairs; a capital O differs from a zero.
LG appliances show short alphabetic codes (OE, IE, UE on washers, Er plus letters on refrigerators) and, on ThinQ models, a Smart Diagnosis option. LG also builds many Kenmore Elite units. The codes apply to model numbers such as LDF7774ST, LDT5678SS and DLEX3900B; check the label on your unit to confirm yours.
What causes PF
- Power outage
- Loose plug
- Tripped breaker
How to fix it
- Unplug the dryer or trip the breaker for a minute.
- Restore power.
- Restart the cycle.
- Request service if PF returns.
Parts you may need
| Part | Part no. | Buy |
|---|---|---|
| Main control board | EBR76519505 | Find part |
Part numbers are OEM references; confirm fit by your model number before ordering. Some links are affiliate links; we may earn a commission at no extra cost to you.
Questions
Is a factory reset needed?
Usually a power cycle is enough.
Does PF lose my cycle?
Yes, restart it.
Is the board bad?
Only if PF repeats.
Other LG dryer codes
Sources
Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.
Applies to models including DLEX3900B, DLG7401WE, DLEX4200B, DLHC1455W, RV13WB.





