Error Code bIS
Steam generator not filled within 60 seconds — water level not detected
Moderate
Address soon - your appliance may not work properly
Also displayed as: bIS
How to Fix
- 1
Check if steam feeder drawer has sufficient water — fill to MAX line.
- 2
Verify steam feeder drawer is fully seated and drawer is completely closed.
- 3
Turn dryer off, then restart the steam cycle.
- 4
Do not use distilled water; the water level sensor requires mineral content to function.
- 5
If feeder is full and error persists: check pump wiring connections.
- 6
If pump harness is intact: replace the water supply pump.
- 7
If steam generator itself does not fill after pump replacement: replace steam generator assembly.
This Error Applies To
LG DLEX4270V Series Dryers
Related Error Codes
Power supply wiring error — electric dryer power cord connected incorrectly
FlowSense — exhaust duct approximately 95% blocked
NFC module open or shorted
Steam generator thermistor open or shorted
Power failure — house fuse blown, circuit breaker tripped, or power outage
Water supply pump current is less than threshold (pump fault)
FlowSense — exhaust duct approximately 80% blocked
Outlet thermistor open or shorted (blower housing thermistor #2)