I have a GE Profile Microwave model PVM1870. I opened the door to remove the food that was heating and the light burned out. Now when I close the door the microwave vent fan will run even when the microwave is not heating. After replacing the burned out light, the light now stays on all the time even when the microwave is not running and the door is closed. Any suggestions on how to fix this problem?

William Miller

• 9179 Answers
• Posted on Jul 20, 2008

SOURCE: microwave oven, ge profile model

This is usually caused by either a bad door switch, a loose door switch mount, or bad door hinge alignment.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Door switch or mount trouble can be 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. Other times, 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.

One test that sometimes helps is to gently lift up on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

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 may 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.

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

SOURCE: After use, fan keeps running and control panel not working

Hi, this is a major chip fault. this chip is located on the control board and, it is responsible for initiating the cooking cycle correctly. you will need to replace the control board asap. it has failed.

SOURCE: Active vent keeps opening and closing though fan is off.

When the unit begins the never ending opening and closing cycle, turn the vent fan on for a few seconds and then turn the fan off. This seems to stop the active vent from opening and closing. If this is GE quality, this is the last thing that I am going to purchase. GE refrigerators are garbage and now I am having problems with a new microwave oven.