LG displays PF when electrical power to the washer was interrupted while it was operating.
What PF means
LG displays PF when electrical power to the washer was interrupted while it was operating.
What you may notice
- The display or status light shows PF
- The display reports a voltage or power warning
- Operation stops unexpectedly
- The warning follows an outage or surge
Most likely causes
- 01A recent outage or brownout
- 02An extension cord or power strip is in use
- 03The branch circuit is overloaded
- 04A plug or receptacle is damaged
- 05An internal power component needs service
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Check for a wider outage
Confirm whether other lights or appliances were affected.
Use the correct outlet
Remove extension cords and power strips; use the dedicated grounded outlet specified by the manual.
Inspect without opening
Look for a loose plug, heat discoloration, or a tripped breaker.
Restart once
After stable power is restored, follow the manufacturer's one-time restart procedure.
Know where to stop
Stop using equipment with a hot plug, damaged cord, arcing, burning odor, or repeatedly tripped breaker. Contact an electrician.
When to call a technician or support
Seek service if the power warning returns on a verified circuit or if the equipment will not restart normally.
When you call, have the exact product model, the complete code or light pattern, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
LG USA Support — front-load washer error-code list Source last checked August 18, 2026. Manufacturer instructions and model manuals take priority over this independent summary.