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LG Range LRE30453ST Oven will only heat to 325*-No Error Code-Broiler Element seems to still work

starcitymbh

Premium Member
Joined
Jan 22, 2023
Messages
2
Location
24018
Model Number
LRE30453ST/01
Brand
LG
Age
More than 10 years
LG Electric Oven is not heating to the set temperature and seems to stop at 325*. Convection feature does seem to heat to a higher setting but takes 30 minutes to preheat. Main Board was just replaced a year ago. I am not getting any error codes and the broiler element seems to still work fine. Does this point to the temperature sensor being bad? Any videos to show how this can be done? I will not pay the money to replace the main board but instead buy new range.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
137,353
Location
Vicksburg Junction, Arizona
Yes, I'd first disconnect power to the range and remove the oven sensor and ohm test it.

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


Watch this video to ohm test it:

 

starcitymbh

Premium Member
Joined
Jan 22, 2023
Messages
2
Location
24018
Question... other similar posts indicated that the the oven relay board would need replacing. How would you know if it's the Sensor or Relay that's bad? Would that be a seperate relay board than the main board that I just replaced?
Thanks!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
137,353
Location
Vicksburg Junction, Arizona
The oven sensor is separate from the relay board.

Rick explains how to test the relay board here:
You model uses that exact same relay board.
 
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