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Nespresso Romeo coffeemaker shows an F9 display. Unplugged and plugged back in and nothing changes.

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Maytag model MMV4203 display shows SE


same thing as Samsung - shorted key - google manual

Feb 01, 2016 | Maytag MMV4203D Microwave Oven

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Error Code F9.Q (Touch Communication).


KitchenAid Appliance Fault Codes - PartSelect

www.partselect.com/JustForFun/Kitchen-Aid-Appliance-Fault-Codes.aspx
Fault codes for a number of KitchenAid appliances, including two and four digit codesfor ... F9 - Oven Door Lock Failure - Check door lock switches and wiring.

Jul 27, 2015 | KitchenAid KHMS2050SSS Microwave Oven

1 Answer

New microwave keypad problems


Take it back to the place where it was purchased, If it's new, It can easily still be their problem still, There's probably nothing you can do that wouldn't be a lot of trouble for you

Dec 02, 2013 | Bosch HMV8051U Microwave Oven

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GE Microwave (Over the Range: Model HVM1540DPBB) was stopping operation. It would beep, and the display would show garbage. I would unplug it, then plug it into the outlet, then it would display "keypad...


make this test and fix it. God bless you


  1. Inspect the power cordUnplug the power cord and check for voltage at the outlet. Also inspect for damage, shorts, or burn marks that can be a possible safety hazard.
  2. Bad door switchIf your microwave does not work at all and you know everything is plugged in properly and the outlet is functioning, then also check the door hooks and the door release button. Using a volt-ohm meter on RX1, check your terminals. When your microwave door is closed you should have a reading of zero. Once the door is open the reading should change to infinity. If these readings do not match up, replacement of the door switch is necessary.
  3. Blown fusesTo determine if your fuse has blown out, which may attribute to your microwave not running, you need to pull the fuse out using a pair of fuse pullers. Lay it down and using a volt-ohm meter on RX1, check both ends of the fuse in question. If you do not get a reading of zero, then you will need to replace the fuse.
  4. Bad fan motorLocate the fan and remove the leads. Again using the volt-ohm meter on RX1, check the terminals. If an infinity reading is displayed, it means that the fan has gone bad and requires replacement.
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Nov 02, 2013 | GE Microwave Ovens

1 Answer

Sharp microwave display


The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes and try again.

Aug 11, 2013 | Microwave Ovens

1 Answer

Model number 721 82364200. Code F9 continues to show up. Seems to be connected to clock. Works intermitting. Makes a noise when working but is very inconsistent. Not sure what to do.


Sorry to read about your problem, I hope this helps you out.

The F9 error code indicates an inverter failure. If you continue to receive the F9 error code after unplugging the unit for 5 minutes, the control system assembly may need to be replaced.

Note : Microwaves are not good do-it-yourself projects. Microwaves are inherently dangerous to service. Internal capacitors can retain a lethal electrical charge even when the microwave is unplugged. A microwave radiation leakage test must be performed on the unit following any repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

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Dec 31, 2010 | Kenmore Microwave Ovens

1 Answer

Display shows nothing


The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes. Then let us know if the hard reset does not fix it.

Also, Please reply back with your brand and model number so we can help you.

Mar 02, 2009 | Microwave Ovens

1 Answer

Microwave wont come on at all.


replace the fuse. You have to remove the top grill and then you will find it above the display

Dec 24, 2007 | GE Spacemaker JVM1640SJ Microwave Oven

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