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Error code · Freezer

GE Older Upright Freezer L and U: Control lock status

On GE upright frost-free freezers with the older electronic control (FUF12, FUF14 and FUF17 era, with Colder and Warmer pads), L and U are status readings, not problems. The display reads L when the controls are…

Low risk · DIY check OK
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Code
L / U
Appliance
Freezer
Brand
GE
Warranty
30-day workmanship

What L / U means

On GE upright frost-free freezers with the older electronic control (FUF12, FUF14 and FUF17 era, with Colder and Warmer pads), L and U are status readings, not problems. The display reads L when the controls are locked, which you do by holding Alarm Reset for 3 seconds. It reads U and then the current temperature when the controls are unlocked.

Common causes of L / U

  • Controls locked on purpose or by an accidental press
  • Alarm Reset held down while cleaning or reaching in
✓ One safe check you can try

1. Press and hold Alarm Reset for 3 seconds. 2. The display shows U and then the current temperature when unlocked. 3. Do the same to lock the controls again. 4. Then try the Colder and Warmer pads. Close the door afterward.

! Why to stop there
  • If the pads do not respond after unlocking, the keypad or control needs testing.
  • We check the pad response before suggesting any part.
  • Rarely a repair, but if it is, the price is on paper before we start.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
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Other Freezer codes

Temp Alarm lightGE Electronic Chest Freezer Temp Alarm Light Blinking Red High Temp lightGE Chest Freezer Red Light: Above 23 F for an hour Yellow light flashingGE Chest Freezer Yellow Light Flashing: Alarm or power loss Green light offGE Chest Freezer Green Light Off: No power indicator High TempGE Upright Freezer High Temp Alarm: Warm interior Power Fail / High TempGE Upright Freezer Flashing Display: Power outage reminder Door OpenGE Upright Freezer Door Open Alert: Left ajar EGE Older Upright Freezer Code E: Service request
L / UL / U questions
Why does my freezer show L?

The controls are locked. Holding Alarm Reset for 3 seconds toggles the lock, so it is easy to trigger by accident. The lock is meant to prevent accidental changes.

What does U mean?

U appears briefly when the controls are unlocked, followed by the current temperature. It confirms the unlock worked. You can use the same press to lock it again when you are done.

Is L a sign of a failure?

No. It is a normal status. If the pads still do not respond after unlocking, then the control needs a look and we can test it.

Book a visit

Still unsure about L / U?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 547-5545