JES8850BCS21 Jenn-Air Range - Instructions

unplugged oven. removed 2 screws that hold the sensor in place, then removed the dozen or so screws that hold on the rear panel, unplugged sensor and fed wire through insulation. identified and installed correct harness adapter then fed new wire and connecter through insulation and connected to adapter. installed sensor retaining screws.plugged oven back in and tested function.no dice. unplugged oven once again. removed oven control panel and upon inspection of printed circuit board discovered 3 solder joints had failed. dang. resoldered failed joints and also sweetened up a few others that looked suspect. reinstalled controller, replaced all retaining hardware, and plugged in the oven. tah-dah!! works like a charm now. moral of the story is check the pc board first and save $50 for unneeded pats!!! or buy the controller from parts direct for $260ish. btw a roll of solder and soldering iron from an auto parts store cost around $10, learned to solder on you-tube $0. amazing all the home appliances yo can fix if you're not afraid to take a few screws out and poke around a bit. CHEERS!

I removed all the screws that held the trim and inner frame to the outside window unit first. Then, I removed a protective glass from over the two inner panes. Next after removing the frame that held the two inner glass panes together, I took the broken inner glass pane out and replaced it with the new one. Then basically I just retraced my steps and had the door put back together in about 45 minutes. You just need to pay close attention to your disassembly so that you are able to put the pieces back together quickly.

The entire "project" took me less than 3 minutes, and required no tools at all! First, the saleswoman over the phone pointed me to the correct product for my problem ($30 less than what I thought I needed), and it arrived at my home within 4 days. Then, it was just a matter of pulling off the old gasket, and snapping the new one in place! Simple!

Pulled the knob off the stove (in two pieces); replaced it with new knob with no difficulty.

First I called a repairman and left a message. That was 3 weeks ago. So, I 'googled' the error message and determined what part I thought I needed. Ordered the part on Wednesday evening and it was there when I got home from work on Friday. I unpacked the part, got a phillips screwdriver and then watched the repair video on your website. About 20 minutes later I pushed my stove back in place and the flashing said 'set time'. Then I checked both ovens, and have since used both, and everything works!!

Hired a pro. Parts are difficult to get on a timely basis today , if at all. Screw up this repair by damaging the outer " black glass " and you buy a new stove. It took three weeks to get my replacement glass even though PS said the part was being sent within a day of the order. Even so , I am am happy to have gotten it , and will continue to use the company.

Element was sent by buyer, As they recommended, when model of stove given to them. It was upper right rear. When element came. First took off old element. ...Match both element , new element did not look exactly the same, small variation. It did not come on.. I moved old element from left side to right side . Old element worked on both side .. tried new element on left side also.. still didn't work.. so I called right away and explained.. new element did not work.. not defective, but, just wasn't the right one.. I had a specialist came and check it out also. I was told wrong element.

Simply remove old knobs and replace with new.. looks like it did when new. Parts in knob insert should be made of steel so they do not wear out.

I switched the oven sensor easily enough, but it did not remedy the problem, so we are in the process of replacing the oven since it's about 20 yrs. old.

Spoke to your very helpful staff, who advised me that a likely problem was the oven sensor. I took a chance and ordered the part, which came promptly. Your service video for the part was most helpful in my decision to try the part. Installation was a breeze, but it was the oven controller board that had failed and not the oven sensor. That called for a service professional, who ultimately fixed the problem. Your service though, was excellent and I would highly recommend you to others.

The sensor is mounted in the top right side of the oven.An extra long screw driver helps to avoid damage to the sensor when replacing it.The connectors were the opposite to the old sensor and I did not see that there were adapter cables included. It might help to connect or tie these together as I only expected the sensor and did not look for adapters.I had cut the wires and used wire nuts when I found the adapters.The repairs works fine.
Mike

Door was removed very easily. Outside trim pieces were removed. The rest came apart like a simple puzzle. Inside glass is very easily accessed. Upon assembling, time was well under an hour. Shipping was fantastic and I saved close to 200dollars between a service call and a repair.

It was fairly easy if you a handyman there is a few things to to figuer out like taking the glass top off once that was done and you can see the elements it's easy to do from there.

Removed the two screws holding the sensor to the rear oven wall. pulled out sensor wire. It was caught on other wires behind the oven. removed the three screws holding the 8" inspection plate in the center of the rear panel. Carefully move the insulation and reach in to grasp the back end of the sensor wire. Once free from the snag it easily pulls out with the sensor just as stated in the video. using the appropriate adaptor it was easy to re-asseble and and attach to the oven wall. Replace the rear panel with the three screws and it was done

Oven sensor replacement was easy. Thermistor was installed in less than 15 minutes. After installation STILL had "F3" error message. Harness was ok, "Clock" or ECU needed to be replaced. "Computer" is obsolete, no spares available, some companies will rebuilt for $400+. Since the stove was going to the landfill I had nothing to lose by taking the "Clock" apart. It has one chip that is probably the power supply and control chip, another chip is an EEPROM with 128 bytes of storage and the last is a darlington chip that controls the relays. Cleaned up everything that looked like it needed cleaning with alcohol. When I reassembled the unit the pins for the thermistor harness felt loose, so I took it apart, again, and found cold solder joints on all four pins. It must have been there all along but plugging and unplugging the harness finally broke out the solder so I could see it. Soldered the pins back in and now it all works. It's worth a try if you're getting the "F3" message. If the relays on your stove aren't working it would be a good idea to replace the darlington chip. Good luck.