GE Spacemaker JVM1740 Microwave Oven Logo
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Ricky Ly Posted on Feb 08, 2014
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Fan blows when doors open

I have a GE JVM1740SM1SS. Everything words find and it heats. One day started working weird. When the doors are open, the light and fan turns on but the turn table does not spin nor is it heating as I tested to to make sure im not being exposed or it heating. Trying to figure it out. Why does it do that? How can I fix the issue of the fan blowing when the door is open?

1 Answer

Gere knutson

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  • GE Master 842 Answers
  • Posted on Feb 09, 2014
Gere knutson
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Joined: Jul 07, 2011
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Hi,
One of the three door switches has failed and will need to be replaced. You would need to access behind the control panel to check them and or replace it. Good luck

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Nov 01, 2006

SOURCE: Mircowave works, exhaust door opens, fan stop working

From looking at the owner's manual, it looks like the vent fan is only supposed to come on when the internal temperature of the microwave gets too high OR when you press the VENT FAN pad. Here are a couple of fan-related excerpts from the owner's manual, which can be found here: http://products.geappliances.com/ProdContent/Dispatcher?REQUEST=SKUOBJECTS&DOCUMENT=Use%20and%20Care%20Manual&SKU=JVM1840BD (or the better URL here: http://tinyurl.com/yn7r6g) Automatic Fan An automatic fan feature protects the microwave from too much heat rising from the cooktop below it. It automatically turns on if it senses too much heat. If you have turned the fan on, you may find that you cannot turn it off. The fan will automatically turn off when the internal parts are cool. It may stay on for 30 minutes or more after the cooktop and microwave controls are turned off. - Vent Fan The vent fan removes steam and other vapors from surface cooking. Press VENT FAN once for high fan speed, twice for medium fan speed, a third time for low faw speed, or a fourth time to turn the fan off. Press the VENT FAN BOOST pad for extra fan speed. - Hope this helps.

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MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Feb 25, 2007

SOURCE: Microwave Buzzing, Still Heats, but Turntable And Fan Not Working

This is not safe. If the fan is not running, the magnetron will quickly overheat and be destroyed. We answered this in more depth in the other place you asked it.

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Jan 12, 2009

SOURCE: display panel works but no heat, no fan, turn table doesn't turn

This is usually caused by either a bad door switch or a loose door switch mount, which are pretty simple problems to fix.

Even though a door switch clicks, it may still be bad inside.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

If you only need a switch, you can order a universal type here for $5 postpaid.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases in about a week or so.

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

Anonymous

  • 1214 Answers
  • Posted on Feb 04, 2009

SOURCE: ge jvm 1653 won't heat

You've got a problem in the microwave circuit, which could be one or more of the following components -

1) HV diode
2) HV Capacitor
3) HV transformer
4) Magnetron

I am leaning to the diode, but it would take further investigation to determine for sure. Diodes are cheap, as if the capacitor, and replacing those first would not necessarily be in vain if it turns out to be the transformer or magnetron. And I would be most inclined to say it's the magnetron before I would think transformer.

Reply back what you find or if you have more questions.

Anonymous

  • 123 Answers
  • Posted on Aug 06, 2009

SOURCE: GE JVM1440WH01 Will not heat, everything else

It could be a number of things, Burnt connections between the magnetron, Capacitor, Diode and transformer, Heater connections loose or burnt, Transformer, Capacitor Diode or Magnetron US. You need to strip it and find out if you are getting about 2000volts to the Mag, Are you getting approx 5volts across the heater terminals?? NOTE that the 2000 Volts can remain in the cap indefinitely and the voltage is LETHAL. IT WILL KILL YOU if you don`t take precautions. Ian

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I hope you found this to be helpful

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Does the turntable rotate? If everything but this works (except no heat), you probably have a bad door switch. Here's a discussion of what's involved in replacing it: http://www.fixya.com/support/t267796-kenmore_microwave_hood_combination_over

If the turntable does rotate, I'd suspect a more significant failure, such as the transformer, capacitor, or magnetron. If it's any of these, it's time to replace the unit.
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