C9875VRV Magic Chef Wall Oven - Instructions

The video indicating •unscrew old sensor, •pull wiring, •unplug old sensor, and •plug in replacement was good until I pulled the old one and saw wire nuts behind the small square hole! After some research, I learned that the nuts COULD come through that small hole with use of needle nose pliers. One of the wire nuts had the edges pinched off (chipped) in the process. Then I learned about ceramic wire nuts, which I'd never previously encountered. Very important if you don't want to melt your nuts! I cut and stripped the end of a disconnect plug to the stove wiring and now I have a plug in place; which, hopefully, I'll never need to use.

Left oven off. Located sensor in pdf manual. Unscrewed mount, pulled sensor out to access connector. Disconnected old sensor, checked continuity(resistance) on ohms with multimeter. No continuity; connected new sensor, screwed mount back into place, turned on oven and baked cookies to check operation & it worked perfectly.

took out the old dome cover and replaced it with a new one by unscrewing and replaced the new one and a fiberglass gasket. simple.

Ordered the part. when it arrived-quite speedily, I just unpacked it and put the cotton gasket around the glass and screwed it to the proper place in the oven. Very easy.

Turned off breakers to oven. Removed two screws that held oven in cabinet. Removed oven door by opening slightly and pulling up on door. Pulled oven out 1/3 of way. Took out four screws on top of control panel. Took oven light switch off by unscrewing holding ring. Removed temp knob on right by pulling. Removed start / stop knob same way.Removed glass straight out. Removed four screws that held elecrtonic clock conrtol board. Unpluged three wire plug from right side and the nine wire plug from the left side. Worked board out at and angle. Went backwards to connect and replace board, screws and door.Slid oven back in and tested oven after turning breakers back on, worked like new.

I took the broiler pan out of the shipping container and put it in the oven.

I removed the two screws that attach the element to the back of the oven. Then I pulled the element out a few inches and disconnected each of the wires attached to the element.
These were easy to disconnect because they were quick-disconnect spade type connectors.
Note the easiest part was the ordering and delivered the very next day WOW

Took screws out of the back on the side the sensor was on, unplugged it & took out the two screws on the inside of the oven to release the sensor. Put new sensor in place with the two screws & used one of the adapters to plug in the new sensor. Put screws back in the back panel & turned on the oven which unfortunately is still 50 degrees low. Need a new clock with computer which is out of stock & unavailable. I was an electrician for 25 years so didn't experience any problems. It was a cheap thing to try.

installed part,turned unit on-temp still cold. reset digital control, up 35 degrees, still cold. un-plugged unit,re-connect after 10 min. still cold.

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.

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.

Removed the original rack. Checked dimensions, installed the new rack.

Pulled range out from cabinet-wall to get to back side, everthing was clearly exposed tlhen. Just a matter of installing new fixture, putting back on, reconnected power source - put range back in proper place.

I had to pull out the oven and balance the oven on two patio tables. Remove the back of the oven. Pull out the light assembly which was burnt. I was unable to remove the casing around the light, so I destroyed it with a pliers. Reinstalling the new light and assembly was easy. What made this job difficult, I could not remove the light assembly from the front of the oven and had to go in from the back.

Replace the racks. No special instructions.