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LG Oven LRE3194ST Burnt wire/connector on lower heating element

ColeH

Premium Member
Joined
Feb 14, 2022
Messages
2
Location
25419
Model Number
LRE3194ST
Brand
LG
Age
1-5 years
Hi,
I was having an issue where the oven would not get up to temp, or if it did get up to temp it would not hold it properly. I had originally bought a new temp sensor to install but when I pulled off the back cover to install it I found that this wire on the lower heating element had been burnt off. I measured the resistance on the heating elements and found the top one to be about 20Ω, the bottom to be about 24Ω and the small convection coil to be about 75Ω. This connector was the only one that showed any signs of heat damage. I plan on replacing the wire and connector but I guess I am unsure of root cause. Is it common to have a loose connector that can cause this failure? Or should I expect to see this happen again when I install a new wire? The unit is only about 2 years old.

20220213_122113.jpg
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
5,282
Location
Ontario, Canada
ColeH said:
I am unsure of root cause

There are 3 things that can cause such a failure:

1. A loose connection between the wire and the wire terminal caused heat to be generated which in turn was transferred to whatever it was in contact with. (That is why a proper terminal installation onto good section of wire is so important!)

2. There was a loose connection between the wire terminal and the component terminal that generated heat which in turn was transferred to whatever it was connected to.

3. There was a bad connection inside the component, that generated heat which was then transferred to its terminal and affected nearby surfaces and connected components. That is not applicable to an element.


All affected parts of that need to be replaced at the same time. In your case the element terminal looks discoloured too so it should be replaced as well... regardless if it tests as Ok. Anything discoloured has been affected.

LINK > LRE3194ST Bake Element


Dan O.
 

ColeH

Premium Member
Joined
Feb 14, 2022
Messages
2
Location
25419
Ok, thank you. That is what I thought, I just didn't know if there were any other sources that could cause an issue like this.
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
5,282
Location
Ontario, Canada
Make sure of a good wire and terminal connection and that it is pressed onto the element terminal securely. There are no external factors that could contribute to such a failure so once you correct that condition you should be done.


Dan O.
 
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