tCL
LG Washing Machine
Severity: MinorWhat Does This Error Mean?
tCL on your LG washer is not an error — it is a reminder to clean the tub. After a certain number of wash cycles, LG washers automatically display tCL to prompt maintenance. Your washer is working fine. You just need to run the Tub Clean cycle to clear this reminder.
Affected Models
- WM3900HWA
- WM4000HWA
- WM3700HWA
- WM1388HW
- Most LG front-load washers
Common Causes
- The washer has completed a set number of cycles since the last tub cleaning
- Detergent residue and mineral deposits have built up inside the drum over time
- Mold or mildew growth inside the tub due to leaving the door closed between washes
- Using too much detergent regularly — residue accumulates faster than normal
- Using liquid fabric softener frequently — it leaves a coating inside the drum
How to Fix It
-
Make sure the drum is completely empty — no clothes inside.
The Tub Clean cycle uses very high water temperature. Never run it with laundry inside.
-
Add a tub cleaning tablet or powder to the drum — or use liquid bleach in the detergent drawer.
LG sells Tub Clean tablets. Affresh and OxiClean also work well. Follow the package dosage instructions.
-
Select 'Tub Clean' on the cycle selector and press Start.
The Tub Clean cycle runs for about 1 hour on most LG models. Do not interrupt it.
-
When the cycle finishes, wipe the door seal with a damp cloth.
The rubber gasket around the door traps moisture and grime. Wipe it thoroughly with a clean cloth after every Tub Clean.
-
Leave the door slightly open after the cycle to allow the drum to air dry.
Keeping the door open between washes prevents mold and mildew growth — which is what causes odors and triggers the tCL reminder faster.
When to Call a Professional
tCL is a routine maintenance reminder — a technician is never needed for this. If the tCL reminder reappears immediately after running a full Tub Clean cycle, the cycle may not have completed properly. If your washer shows other error codes alongside tCL, address those separately. Contact LG support at 1-800-243-0000 only if you have a separate mechanical issue.
Frequently Asked Questions
How often does the tCL reminder appear on an LG washer?
LG recommends running the Tub Clean cycle every 30 washes. The washer keeps a cycle count internally and triggers tCL automatically. If you wash laundry frequently, you may see this reminder monthly. If you wash less often, it may appear every few months.
Can I skip the tCL reminder and keep washing clothes?
Yes — the washer will still work normally if you skip it. tCL is a reminder, not a lockout. However, skipping tub cleaning regularly causes detergent buildup, mold, and unpleasant odors. Your clothes may also start to smell musty if the drum is not cleaned periodically.
What is the best cleaner to use for the LG Tub Clean cycle?
LG recommends their own Tub Clean tablets or a similar appliance cleaner. Affresh Washing Machine Cleaner is a popular and effective option. You can also use 1 cup of plain liquid chlorine bleach — put it in the bleach dispenser, not the drum. Avoid using vinegar inside the machine — it can damage rubber seals over time.