Appliance Repair Questions? Ask a Technician for Answers ASAP
Hi I have an LG range and get the f3 code, sometimes I don't but about every other time it seems I have it every few minutes. Tested the impedance of the sensor measured 1120 ohm, relay with bake element connected was 120.4 one side 120.6 other side. With the element disconnected it was 120.6 on right side terminal (from rear view) and 0v on the other, the relay clicked on and off every minute it seemed when it was on the terminal on the left went from 0v to 120.4v. While testing the relay with oven on bake, the top element was on and heating up the oven. Please help, the error code is driving me crazy.
Of course now that its all plugged back in it seems to be working...
Ah the ever popular f3 temp sensor fault or error code.
Dont let it through you for a loop here.
if the sensor was checked at room temp and read 1120 ohms then it is good. but if was at any other temp then room temp it is bad.
And as far as for the relay clicking and sending voltage like it did while testing it is normal. That relay will be activated like that multiple times during a bake cycle. If the element was getting full power the whole time then it is good. And the fact that it was working usually shows it is good.
now as far as for the broil or upper element coming on during the start of a bake cycle is normal. In fact as most ovens come on a bake cycle, the broil element will come on barely just to help and speed up the heating process. That is normal.
If you continually get the f3 error code or intermittently get it but the oven works fine in both bake and broil then it is just a false error code. Which often happens as the control board shorts out. But if you get the error and the oven doesn't work either in a bake or broil and you get the code right away then replace the temp sensor.
It is so cheap it is worth just throwing a new one in to check the function of the machine. It will certainly keep your sanity knowing that you have changed it out. and it usually will solve the problem. and if it doesn't then you know the control board is bad.
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Thanks for the response, yeah we just hit clear and re-program the bake temp and it works until the next f3, which could be 2 mins after or a week or 2 after. Are you talking about the control board with the relays that I was testing to replace if needed, or the main one up top? So most likely being an intermittent problem it is the control board?
(saying the control board shorts out.... That's obviously not supposed to happen)
Where would be the best place to order these parts from?
Also, I let the sensor cool for some time with the oven door open however it was probabky
Probably* a little warmer than room temp.
Excellent. Thanks! Took out the sensor and let it cool, its around 1090Ω.
And as for the board, if I am getting the f3 code still, that's about the only other thing it could be?
So I replaced the sensor as well as the board and I still get the f3 code it's always after the oven has heated and usually about 10-30 mins into the bake. I clear the code and re set the temp and it works for another 10 mins a and I get another error code. Is getting frustrating more than anything, doesn't prevent us from cooking though
6870w1n012a for the board, can't find the part number in the sensor but I ordered it from repair clinic.com under my range model number, yes I have a meter but I think it's strange that it's doing exactly the same thing as it was before, is there anything else it could be?
It is cooking accurately, we just keep getting random f3 codes, how do you reset the board? I have turned off the breaker for a while and back on and still does it.