Question about GE JVM1440 Microwave Oven

1 Answer

Fan and light constantly on

I just replaced the light bulb in my unit. After plugging back on, both the light and the fan came on.
The fan will stop if I open the door, but the light is constantly on. The oven warms things properly and stops the magnetron at the end of the cycle, but now I have to leave the door propped open to avoid the fan running constantly. What could be wrong?

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  • 3 more comments 
  • Dominicus Feb 18, 2008

    It's the exhaust fan that runs if I close the door, even without starting a heating cycle. This fan is at the top of the microwave right next to the lamp.

  • Dominicus Feb 18, 2008

    It's the exhaust fan at the top of the unit. This fan is in the same enclosure as the light bulb I just replaced. It now starts running as soon as I close the door.

  • rlangerak509 Sep 02, 2008

    When I open the door my fan starts running

  • jenkstate Dec 19, 2012

    I am having the same problem and cannot figure out how to reset. Did you ever figure it out??

  • jenkstate Dec 19, 2012

    I am having the same problem, and have had it before. Cannot remember what to do. Did you ever figure out how to reset?

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  • 65 Answers

Which fan? the exhaust fan or the control board cooling fan? the cooling fan is controlled by a thermostat just behind the control panel. it turns the fan to protect the board from overheating.

Posted on Feb 18, 2008

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Posted on Jan 02, 2017

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1 Answer

Light doesn't go off and microwave doesn't work


follow this steps 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.

  1. Light bulbIf your microwave light bulb is not working, perhaps it has blown. The first step is to replace the bulb and power on the microwave. If this does not correct the issue, the next step is to check the socket and wiring to verify if that is the problem.
  2. Light bulb socket & main control boardIf your microwave light bulb is not working after the installation of a new bulb, check the light socket as well as the wiring to ensure they are properly operating. If these sources are functioning properly, the next step is to check for a faulty control board as a possible root cause to your microwave light bulb malfunction.

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HI, this is a faulty control panel. replace asap if possible.

May 29, 2009 | Whirlpool Microwave Ovens

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When i plug in the microwave it starts running & will not stop


Sounds like you blew a device on the main board when you didn't unplug it first. The whole main timer board must be replaced to repair the unit. Pricey, sorry!!

Aug 01, 2017 | GE Spacemaker JVM1640SJ Microwave Oven

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I replaced the light bulb, now it displays -F6- and pushing any button causes a humming noise.


I left the unit unplugged over night, plugged it back in the next day and still had the same problem.

Oct 13, 2008 | Roper Microwave Ovens

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New problems after installing light bulb.


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 maybe an hour.

Then let us know if the hard reset does not fix it.

I would think you have a problem with a door switch or door switch mount.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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Turntable, lights and fan inop


I'm guessing that nothing is working...is that right? If so, first guess is the breaker or an internal fuse. Nearly all units have them. You don't say what fuse you checked. Unplug the unit, remove the bulb and see what is in the socket. Next, open the breaker and then turn it back on. This will reset it. Something caused this.

Dec 19, 2007 | Magic Chef CMV1000B Microwave Oven

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No power to unit


I would first suggest that the door switches and door switch mounts be checked, but one of the problems is almost certainly trouble on the control panel, which we regularly repair nationwide for $39.95 postpaid.

The light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This often can affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on. Other trouble can occur as well.

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement,
disassembly information and info on our repair service at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Please write back with more details if you need further help.

Nov 17, 2007 | Whirlpool MH1150XMQ Microwave Oven

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Keypad problem


The most likely causes are a bad door switch or a problem with the control panel assembly. You can find critical safety information plus our information file on checking and replacing door switches at our site, via our poisting here: http://tinyurl.com/yzjozk If you need control panel repair, we do that for $32.50 nationwide.

Jan 24, 2007 | Kenmore 62622 Microwave Oven

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