LG Dryer Loud Banging — What’s Happening
A loud banging sound in an LG dryer is not an error code. It is a symptom that points to a drum or load problem, or worn mechanical parts in the drum support system. LG’s official error code list covers display faults like duct blockage and sensor issues, but it does not define loud banging as a code.
The noise is commonly caused by an unbalanced or overloaded load, foreign objects left in pockets, or mechanical wear in components that support and turn the drum. The most frequent culprits are drum rollers, the idler pulley, the drive belt, and sometimes loose baffles or debris in the blower housing.
Most Likely Causes
- Worn drum rollers Drum rollers develop flat spots, rough bearings, or seized shafts over time and create loud thumping or banging as the drum rotates.
- Overloaded or unbalanced load Heavy items mixed with lighter garments cause the load to thump repeatedly against the drum walls during tumbling.
- Foreign objects in drum or seals Coins, buttons, screws, or hard items left in pockets fall into the drum or lodge between the drum and housing, creating rhythmic banging.
- Faulty idler pulley A seized or rough idler pulley bearing makes loud noise as the belt moves over it and can cause the drum to run unevenly.
- Loose or worn drive belt A damaged, glazed, or misrouted belt allows the drum to shift or slip, causing uneven rotation and impact noise.
- Loose drum baffles The plastic or metal ribs inside the drum can crack or pull loose from their mounting screws and bang against the drum interior.
- Debris in blower housing Foreign objects or loose components in the blower housing rattle or bang against the fan blades or housing walls during operation.
How to Diagnose and Fix
- Run the dryer empty and then with a normal load to determine if the noise is load-related or caused by the machine itself.
- Disconnect power, open the dryer door, and inspect the drum interior for loose objects, coins, buttons, and damaged or loose baffles.
- Confirm with the customer that loads are not overloaded and do not mix very heavy items with light garments in the same cycle.
- Remove the cabinet panels and drum access components according to your model’s service procedure to expose the drum support assembly.
- Inspect the drum rollers, idler pulley, and drive belt for wear, flat spots, cracks, glazing, binding, or misalignment.
- Spin each roller and the idler pulley by hand to check for roughness, wobble, or seizure instead of smooth free rotation.
- Check the blower housing and surrounding area for foreign objects, cracked parts, or loose hardware that can rattle during operation.
- Reassemble the dryer, verify the drum spins freely by hand and the belt tracks properly, then test through a full cycle to confirm quiet operation.
Parts You Might Need
| Part | Notes |
|---|---|
| Drum roller kit | Amazon | Most common repair for loud LG dryer noise. Replace all rollers at once. |
| Idler pulley | Amazon | Replace if bearing is rough or seized. |
| Drive belt | Amazon | Replace if worn, glazed, cracked, or when replacing rollers and pulley. |
Related Error Codes
If your appliance also shows a code on the display, these match this problem:
- Lg Dryer Add error code
- Lg Dryer D75 error code
- Lg Dryer D80 error code
- Lg Dryer D90 error code
- Lg Dryer D95 error code
- Lg Dryer De error code
- Lg Dryer De1 error code
- Lg Dryer E00 error code
- Lg Dryer E1 error code
- Lg Dryer E13 error code
- Lg Dryer E4 error code
- Lg Dryer F0 error code
When to Call a Pro
Call a pro if you are not comfortable disassembling the cabinet and drum assembly, or if the banging persists after you have checked for load issues and foreign objects. Drum roller and idler pulley replacement requires removing the drum, which involves working with the belt routing and reassembly in the correct sequence. A technician has the tools and experience to diagnose the exact source of the noise, replace worn components as a set, and test the dryer to confirm smooth, quiet operation before returning it to service.