The sub PCB assembly (also referred to as a relay board), is a part for your range. If your oven is overheating, this might indicate that your sub PCB assembly needs to be replaced. You will need a Phillips screwdriver to remove the screws securing the upper rear access panel brackets. Also, remove the screws securing the panel and detach. Take note of how the wires are currently connected to the board. This board is held in place by screws and can be removed. You will then need to release the retaining clips to release the entire board. The new sub PCB assembly should snap into place.
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Troubleshooting
This part fixes the following symptoms:
Little to no heat when baking
This part works with the following products:
Range.
Part# 6871W1N012B replaces these:
AP4441283
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Perry W - February 9, 2018
Verified Purchase
Fix made easy with the right parts
Installed and tested in 20 minutes oven in use cooking dinner in 30 min
★★★★★
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Jonathan S - February 18, 2022
Verified Purchase
Worked great!
I was a bit unsure about doing the repair myself, but it was not difficult and put oven is in good working order now. Thanks!
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Customer Repair Stories
Average Repair Rating: 4.4 / 5.0, 1 reviews.
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Oven would initially start to heat up but would not hold its temp
I searched online and found someone that seemed to have the exact problem. That person had replaced the lower burner and the same PCB board I replaced. I was able to test the lower burner without removing it and it tested OK. The PCB board in the article I had checked was burned and obviously bad but mine was not. I took a chance and
... Read moreordered just the PCB board. I replaced this board and the oven now works perfectly. I seems this board was not turning on the bottom burner but the system thought it was working fine.
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Leonard from Plano, TX
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
3 of 4 peoplefound this instruction helpful.
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12 questions answered by our experts.
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James
March 18, 2018
I was in kitchen cooking when I heard a loud noise. It sounded like a surge. I took the bake element out which had a hole in it. I replaced the bake element and it is still not working. Everything else on the stove and the broil element works. Can you help?
For model number Lre30453st00
Hello James,
Thanks for your question. While the oven control board may be the cause of this issue, you should also consider testing the temperature sensor, part number PS3528950, with a multimeter for electrical continuity. Replace them if they do not show continuity.
I hope this helps.
Evening meal prep oven was set to bake 425 degrees and would not heat above 390 degrees. Following morning again set bake to 425 degrees and monitoring oven temperature with hanging baking thermometer temp exceed 550 degrees before I cleared temp setting. I assume I should start by replacing the oven thermostat part# PS3530468?
For model number LRE30453ST
Hello Lonnie, thank you for your inquiry. Based on the description you have provided, there is an issue with the temperature thermistor sensor, part number PS11732697. It measures and regulates the internal temperature of your oven cavity. Glad to be of assistance!
Oven started heating, came almost to the desired temperature then quit. No error codes. Cleared the panel and reset - indicated temp was above min temp, to begin with, but the oven did not increase in temp. Cleared the panel, turned off the breaker for 2-3 minutes, reset the breaker and tried the oven again. Can hear the convection fan run, and some relays clicking initially and occasionally after, but the temperature in oven will not increase. It can touch the floor of the oven and not getting hot. Then I tried the broiler and that element did not work either. no error codes
after reading several of your comments for other person's questions, I am wondering if this model has a relay control board, and if so, does that sound logical?
I got a diagram of a lre30451sw from your web site, but I don't find one for the lre3193sw. I would like to test the resistance on the thermal switch/fuse, but not sure where to look.
thanks
For model number LG LRE3193SW
Hello and thank you for writing.
It certainly sounds like it could be a faulty thermostat PS3530468, you should check the part(s) for signs of damage, and replace as necessary. We have no information that this unit has a control board as this part would not be available anymore. You should test the element for continuity with a multimeter, but it really sounds like the thermostat could be at fault here. If you punch in the part number for the thermostat on our website you can see a picture of that part. We hope this helps. Please contact us anytime if you require further assistance.
My oven occasionally will not reach temperature. The thermistor is reading correctly at 1087 ohms and the heating element has continuity. Do have ant suggestions what i can check next. Would it be the relay control board? Thank you!
For model number LRW30451sw/sb/st
Hello Steve,
Thank you for contacting us.
It is likely that you need to replace the main control board. This is part number PS6012666 As this is the part that controls your elements in the oven.
Thank you for your question.
When I turn my oven on it reaches temperature on the LED but it keeps on rising up to over 500 Degrees
For model number LRE30451ST/01
Hello Jack, Thank you for your inquiry. We have researched the model you have provided and we would recommend checking the following parts to fix your issue: the high limit safety thermostat, the temperature sensor, the oven relay board, and the bake and broil elements. You can test the parts with a multimeter. If you are unfamiliar with how a multimeter functions, we have videos available to assist you. We hope this helps and if you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you!
Oven stopped baking on bottom. Bottom element is fine. Parts store ordered a control board telling me it controls the cooking, then I find the oven has its own relays. Do the relays go out very often?
For model number LRE30453st 02
Hello David, thank you for your question. We have researched your model and found that the issue is probably with the Thermostat, part number PS3530468. If that does not take care of the issue, then the problem is most likely to be related to the Relay Control Board, part number PS3530118. If you require assistance to place an order, please contact customer service. We hope that helps!
My oven relay board has 4 relays where part no. 6871WIN012B only has 2. Will the 2 relay board replace the 4 relay board and work the same???
For model number LRE30453st 0/2
Hello Dave, thank you for your question. The relay board with 2 relays, part number PS3530118, will fit your model. If you have any follow-up queries, please feel free to reach out to customer service. We are available seven days a week. Glad to be of help!
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Paul
December 17, 2022
in any oven heating mode (bake, broil, convection) oven will heat for 4-5 min without issue (sometimes getting to temp if low enough, but sometimes not for higher temps) then the oven shuts offs (plays the same jingle as the stove element doesn't have a load on it). I can restart and it will continue operation but after first error will incur the same error every 1-2 min. Error code shows as a F8 code.
All resistive test are good...broiler upp/low 52 / 23, conv heater 22, temp sensor 1.09kohme.
4 yrs running this happened, I had extended warranty on it and they said they'd send a tech and parts. Parts came, but no tech and then they bailed and sent a cheque. Unbelievably easy (it was the after purchase warranty company costco sells). But now my quest is to get it working. Swapped temp sensor, and main board (parts they sent me) to no effect.
For model number LSE4617ST
Hi Paul, thank you for reaching out. The error code F8 on your LG range indicates that the oven control board is either not getting the proper voltage or is defective. We suggest that you replace the electronic control board, part number PS12080796, to resolve the issue. If you require assistance to place an order, please contact customer service. We hope that helps!
This is a double electric wall oven. I need a new control board. Which part number do i need?
For model number LG Model # LSWD307ST
Hi Ronald, thank you for your question. The compatible part that you are looking for is PCB assembly, part number PS3533878. We hope this information helps!
The PF lights come on when using the range or when ever it wants when not using
For model number lre30453st
Hello Philip, thank you for reaching out. According to our research, the PF light indicates that the unit has experienced a power failure. To clear this, press the clear/off button. If this does not remove the PF light, you may need to replace the control board, part number PS6012667, to fix the issue. We hope this helps, good luck with this repair!
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