FFLG · Washer

LG Washer FF: Official Meaning and Checks

Use cautionDisconnect utilities where directed before checking.

Direct answer

What FF means

Official LG material describes FF as Freeze failure: the temperature inside the washer dropped below 1°C; drain/inlet hoses may freeze; controls stay disabled until the machine rises above 4°C. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.

Also shown as: u51

Before you begin

Safety first

Official warning: never pour boiling water into the drum (burn risk); use warm water only.

  • Record the complete displayed code and the full model number before clearing the display.
  • Disconnect power before touching a user-accessible filter, hose, burner, or electrical connection.
  • Stop using the equipment if it leaks, smells burned or of gas, smokes, sparks, or trips a breaker.

Does this guide apply?

Region
United States
Product family
LG Front Load Washer (the official pages list no specific models; feature-specific codes apply to the corresponding models)
Scope note
The cited source scope is LG Front Load Washer (the official pages list no specific models; feature-specific codes apply to the corresponding models). Confirm the complete model number before applying the guidance; an empty model list does not imply all models.

Common paths to check

These are source-backed possibilities, not probability estimates for your specific unit.

  • 01 Official source meaning: Freeze failure: the temperature inside the washer dropped below 1°C; drain/inlet hoses may freeze; controls stay disabled until the machine rises above 4°C.

Decision path

Safe checks, in order

  1. 1

    Confirm code and model scope

    Compare the complete display and full model number with the cited manufacturer page or manual before applying any troubleshooting instruction.

    Expected: The official source explicitly covers the displayed code and product family.

    If not resolved: Contact manufacturer support with the full model and serial number.

  2. 2

    Follow the official owner checks

    1) Open the door, remove laundry, pour warm water (50-60°C) into the drum, close the door and wait 1-2 hours to thaw the drain pump. 2) Open the lower access cover, remove the drain-tube cap, drain water, and close securely. 3) Run a Rinse x1 cycle to verify. 4) If IE shows and the drum does not fill, thaw the inlet hoses: disconnect them, wrap a hot towel around the faucet for 5 minutes, thaw hoses in water below 50°C, reconnect. 5) For long-term winter storage, drain all residual water and keep hoses unbent.

    Expected: Only the user-accessible condition identified by the official source is corrected.

    If not resolved: Stop repeated resets and arrange qualified service if the code returns or the source directs service.

Reset and test

A user reset is not documented for this condition.

Important: A reset may clear the display but cannot repair the underlying condition; follow only the exact model-specific manufacturer procedure.

Escalation point

Stop and arrange service when

  • Official warning: never pour boiling water into the drum (burn risk); use warm water only.
  • The equipment leaks, smells burned or of gas, smokes, sparks, overheats, or trips a breaker.

Official sources

We paraphrase manufacturer material and show the publication scope so you can verify it.

  1. User-specified official URL LG · FF / u51 · accessed 2026-08-08

Reviewed by Device Fix Guide · Last source check: