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Mystery Icemaker issue-LG Refrigerator LMXS30776S/02

rehman

Premium Member
Joined
Feb 24, 2022
Messages
12
Location
Virginia
Model Number
LMXS30776S/02
Brand
LG
Age
6-10 years
Customer complaint was that icemaker does not work. The water dispenser gives out water.
1. I have replaced the icemaker (twice from different sources to be sure) but it does not go into harvest cycle with the test button.
2. The icemaker sensor Gail's the test of "FULL" Vs "EMPTY"
3. Reeplaced the dual water valve on the door but still does not work.
4. Replaced the icemaker PCB on top of the door but still icemaker does not work. The freezer temp is Zero and checked by keeping water filled in a steel glass. It became ice within 2-3 hrs.
I don't have the electrical drawings to check if the main control board has an issue but it seems like it's the culprit. Any advice fromnyiubwould be highly appreciated.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,532
Location
Redmond, Oregon
Hi,

Yes, the ice maker on this model gets its power from the main control board PCB. Also check for any broken or pinched wires coming into the ice maker compartment door, usually the wires are under the top door hinge cover.

Here's the service manual for your model: https://drive.google.com/open?id=1WMdR6wPQDdvkfAoMkLyllxvg-5dyYEaU

Ice maker troubleshooting begins on Page 106.

Here's the ice maker for your model:
AEQ73110210 Ice Maker Assembly,kit


Here's the main control board PCB for your model:

Let us know what you find.

Jake
 

rehman

Premium Member
Joined
Feb 24, 2022
Messages
12
Location
Virginia
Refrigerator: LG
Model: LMXS30776S
How to check if the Control board is supplying correct voltage to icemaker. I have changed the whole new icemaker and even replaced the small icemaker pcb located on top of the door. Still the new icemaker does not harvest. Can you please guide me how to check the icemaker through Main PCB? i have the service manual downloaded from MSA but it does not guide about it.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,532
Location
Redmond, Oregon
i have the service manual downloaded from MSA but it does not guide about it.
Yes, LG is very vague on how to troubleshoot that. Also check your wiring, look here:

Jake
 
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