Part  Interchangeable:    Scrap Current Part in LG Warehouse:   Yes            No 
[SVC Guide] Guide to IE Errors Caused by the Siphon Effect 
Service Bulletin 
Product : Washing Machine 
Bulletin # :  DFZ201900167-01  
Release Date : 11/15/2019 
Applicable for Serial Number : 901TN******* ~  
Page 1 
Applicable for models: (WM3500CW / F3L2CNU4W); (WM3700HWA / F3L2CYU5W); (WM3700HVA / F3L2CYU5T); (WM3900HWA / F3L2CYU2W); (WM3900HBA / F3L2CYU2W); (WM3460CV / 
F3L2CNU9T); (WM3460CW / F3L2CNU3W) 
Bulletin Type :     SVC Notice           Parts            Others 
Applicable :only with symptoms              :with every repair   
Symptoms 
 Machine giving an IE error, even though inlet valves are functional.  
Picture 
Cause 
Since the drain hose is too deep in the standpipe, water is being siphoned out of the 
machine while it is added. Since the machine does not sense a change water level, it 
assumes an inlet valve is malfunctioning, giving an IE error.   
Current and New (Visual  /  Part number & Name etc)    
 
 
 
  
 
Different Lengths of Drain Hose (AEM74772903) 
2700mm (Old)  2200mm (New) 
Note: The repair instructions were moved to the second page.  
 
 
 
 
Current Part  New Part 
Current Product  Yes  Yes 
New Product  Yes  Yes 
(Note): If the drain hose is damaged, any sizes of drain 
hose can be replaced.  
But, please follow the installation guide on this bulletin.