The fan stays on all the time. We have unplugged the microwave and then plugged it back, but the fan just comes back on.

If the fan in your Amana 10D microwave stays on and doesn't shut off until the unit is unplugged and re-plugged, there could be an issue with the fan motor or the control board. Here are some things to try:
1. Check to make sure the vent is clear and unobstructed. If the vent is blocked, it can cause the fan to stay on.
2. Check the fan motor. The fan motor is responsible for turning the fan on and off. If it is faulty, it can cause the fan to stay on continuously.
3. Check the control board. The control board is responsible for controlling the functions of the microwave, including the fan. If it is faulty, it can cause the fan to stay on or not function properly.
If none of these solutions fix the issue, it is possible that there is a problem with the microwave itself. In this case, it is recommended to contact a professional appliance repair service for further assistance.

Try a reset, unplugging for 10 minutes and plug back in.
If this does not fix it, it has a bad wire, switch or circuit board and is not worth fixing unless you know a good,cheap repairman.
press the helpful button

Could be in one of the micro switches for the door or in the board. Most commonly one of the switches though.

unplug it for 12 hours or more and try again. Failing that the button or circuit for it may be broken, also make sure nothing is blocking the vent or nothing in the vent assembly is damaged. if you are opening the microwave make sure you know what you are doing of get a pro to do it for you. get an estimate and compare that to the price of a new one. Especially if the microwave is old or cheap.

The only thing that controls the display is the microprocessor on the timer board. Sounds like needs a new timer board.

Had the same issue, leave Microwave unplugged for 30 minutes and then plug back in. My fax stopped blowing and now fucntions 100% normal again HI/LO / OFF

Best of Luck!!! :)

Board needs to be replaced

Just checked the GE website. Had the same problem with my 5 year old microwave. GE website says to close and open the door quickly three times. First time I did this it didn't work. Second time I closed the door with some significant force and reopened it more quickly. Worked. Unplugged the microwave, plugged it back in, still fine.

It sounds like two separate problems.

1. It sounds like your magnetron is overheating and then the thermostat trips, cutting the power until it turns off, then it closes to power it back up.

It's essential that the internal cooling fan (I don't mean the hood / vent / exhaust fan) is running to be sure the magnetron stays cool.

2. It also sounds like your vent / hood / exhaust thermostat is sticking or the triac on the circuit board is leaky, causing the vent fan to stay on.

But you may want to check the owner's manual. It is designed to stay on if the temperature of the stove top is above a certain level.

-.htmYou can usually 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.

-.htmPlease reply back here if you still need help.

-.htmWe're happy to help and we appreciate your thoughtful rating of our answer.

Oh, it turns out the the microwave was over heated and the fan was cooling it. The fan will automatically turn on and stay on until your microwave reaches normal temp. just unplug your microwave and let it cool off. then plug it in and everything should be just fine.