LRG3081ST/00 the oven wont maintain temp. I have replaced the igniter, temp sensor, power board & main board. The temp variaance as much as 75/100+

[titewod]

Model Number

LRG3081ST/00

Brand

LG

Age

6-10 years

LG LRG3081ST/00 the oven wont maintain temp. I have replaced the igniter, temp sensor, power board & main board. The temp variance is as much as 75/100 degrees plus to 50 degrees minus set at 350.

 

[Jake]

That's very odd, did you buy your parts OEM or aftermarket? And from where?

These relate to this issue:

FIXED - LG Range LRG3081ST Oven Temperature Erratic

I am having a strange problem with our LRG3081ST oven. If I set the temperature on the oven display to 400 degrees it comes on and the temperature rises fairly steady until it hits 395, then it sits there for some time. I put a new oven thermometer inside to check what was going on. When it...

www.applianceblog.com

LRG3081ST heat issues

Have gas oven that wouldn't heat and cook correctly. Had highs and lows. Replaced oven temp sensor since it showed open/no resistance on test. Now when setting oven to 350, it heats up to 475 then takes time to drop back to 350 and stabilize and holds temp. Rumor has it that this is normal...

www.applianceblog.com

LG Range LRG3081ST Oven Temperature is not Consistent

I have an LG LRG3081ST that was purchased from Home Depot back in 2015. The oven has heating issues where the temperature is off by at least 50 degrees when I bake, and off by over 100 degrees when i use convection mode. I have replaced the EBG61305801 Temperature Sensor, the Range Igniter...

www.applianceblog.com

 

[titewod]

All OEM parts. the igniter from LG repairman, the sensor, panel boards from Sundberg America. The issues continued even after replacing the new OEM parts. I guess it's possible the igniter might have been bad, it was in the original factory box with foam padding.

 

[Jake]

Yes, I'm also thinking its possibly a defective oven bake igniter.

Read this thread post, I explain how to test it:

FIXED - LG Range LRG3081ST Oven Temperature Erratic

I am having a strange problem with our LRG3081ST oven. If I set the temperature on the oven display to 400 degrees it comes on and the temperature rises fairly steady until it hits 395, then it sits there for some time. I put a new oven thermometer inside to check what was going on. When it...

www.applianceblog.com

 

[titewod]

Thanks, I will test the new igniter. I'll have the price of a new range just in replacement parts when this is fixed, if it gets fixed. Thanks for your help!!

 

[Jake]

Glad to help!

Yes, let us know what you find.

 

[titewod]

I had a LG tech come to check my recently installed igniter and requested that he also bring a new OEM igniter with him. He checked the recently installed new igniter with a Clamp style Amp Probe, it tested @ 3.6 amps. He couldn't justify replacing another new igniter with the current one testing very strong. He set the oven bake setting @ 350 and it shut off @ 425 and it reached 450 before starting to cool down, then the igniter restarted the oven back @ 285. He recalibrated + or - by 35 degrees and did not affect the temp either way. His only thinking is that I may have a defective temp sensor. So I will pick one up the first of the week and replace it with the one that's less than 90 days old. Any other ideas that I might try?

 

[Jake]

Ok, then yes, Possibly the oven sensor is defective. To verify that, you can ohm test the oven sensor first.

Disconnect power to the range and ohm test the oven sensor, watch this video: https://www.repairclinic.com/Repair...-Sensor-Testing-Gas-Oven-Repair-Repair-Clinic

Normal for the oven sensor would be 1050 to 1100 ohms at room temperature.

Here's the oven sensor for your model(Video included in part link to remove and replace it):
EBG61305805 Thermistor, Ptc

 

[titewod]

Thanks for your input and help; regardless, after replacing the new parts it still doesn't maintain temp. I have now replaced this stove with a new one with an extended warranty.

 

[Jake]

Ok, Thanks for the update!