Search

Home › LG › Refrigerators › tt

LG Refrigerator tt Error Code

Water tank not detected. What it means, which models show it, and how to clear it, easiest fix first.

LGAll LG refrigerator codes

tt
Easy DIY fix

On models with an internal water tank, tt means the tank is missing, not seated properly, or its detection sensor has a fault.

Compatible models

LG doesn't publish a model list for this code; it appears on LG refrigerators with a digital display. Check your owner's manual.

Also shown as

Only on models with a removable water tank.

Difficulty

Most people can clear this one at home with simple checks.

Safety first: unplug the refrigerator (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG tt

  1. Reseat the water tank

    Remove the tank, check that nothing is caught behind it, and push it back firmly until it sits fully in place.

  2. Reset if needed

    If the code stays, unplug the refrigerator for about 5 minutes and plug it back in.

When to call a technician

If the tank is seated correctly and the code continues, request service for the tank sensor.

Parts linked to tt

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

What does tt mean on a LG refrigerator?

On models with an internal water tank, tt means the tank is missing, not seated properly, or its detection sensor has a fault.

Which LG models show the tt code?

LG doesn't publish a model list for this code; it appears on LG refrigerators with a digital display. Check your owner's manual.

Can I fix LG tt myself?

Usually, yes. Most tt problems clear with simple checks you can do at home. Start with the first step above: reseat the water tank.

What if tt keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when tt appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Other LG refrigerator codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked