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LG Refrigerator LMXS30776S not cooling properly

tdatta

Premium Member
Joined
Jun 27, 2021
Messages
4
Location
New York
Model Number
LMXS30776S
Brand
LG
Age
6-10 years
I have an LG LMXS30776S that I think is from 2015.

Symptoms:
Freezer at -12 to -16c (10f to 3.2f) even though setting is lower.

Fridge at 10c (50f) or higher!!!

Had a tech come by and replace the compressor/dryer two days ago, he also says he replaced the board. Parts were covered under warranty but I had to pay for labor.

Problem is still there.

Evaporator fans run. I used a magnet to trick the door sensor. Very cold air below -18c (-1f) coming from duct to ice maker near left door. Air from vents at top of fridge is about 9c (48f) at coldest.

I tried to look at the fridge evaporator but wasn't able to get the cover off. Took a picture with my phone of the top of the evaporator. No frost.

What's going on?
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,692
Location
McMullen Valley, Arizona
Ok, that tech. will need to come back and check the 3-way valve, apparently its not working properly, that supplies refrigerant to BOTH evaporator coils.

Look here:
Your model uses that exact same 3-way valve.

Jake
 

tdatta

Premium Member
Joined
Jun 27, 2021
Messages
4
Location
New York
Hmmm, thank you.

I will call the tech back.

I did some.more testing and I saw the vents in the fridge blowing air at 4C (39f), but not colder than that. But the fridge is not getting colder than 10c (50f)

Do you still think it's the valve?

How cold should the air be? I assume colder than freezing, otherwise there would be no frost pattern on a properly functioning evaporator.

I wonder if he messed up the valve when brazing the dryer.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,692
Location
McMullen Valley, Arizona

tdatta

Premium Member
Joined
Jun 27, 2021
Messages
4
Location
New York
An update.

Tech came back. Said he found a kink in the compressor to condenser line. Also said that he found a leak at the kink. He fixed these items, but didnt replace the dryer.
The air coming out of the vents in the fridge is now about -2C (28f), but sometimes not as cold as that, I assume this has to do with where in the defrost cycle the evap is at.

He said that I should monitor for a few days. He said there may be some other leak or some other blockage in the closed system.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,692
Location
McMullen Valley, Arizona
Whenever you do a sealed system repair you ALWAYS need to replace the filter drier too, no exceptions! So you may need to look into hiring another tech.

Jake
 

tdatta

Premium Member
Joined
Jun 27, 2021
Messages
4
Location
New York
He replaced the drier 3 days ago when he replaced the compressor.

Could you please explain why it needs to be replaced every time. I'm not disagreeing, just want to understand.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,692
Location
McMullen Valley, Arizona
My bad, I missed you saying that above. We spell it drier in refrigeration terms, not dryer.:)

At any rate, he needs to come back to find out what the problem is.

Jake
 
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