I dont know how to hook the vent fan for outside on the Magic Chef CMV1000B?

not unless you change the motor direction rotation

the low fan relay on the circuit board is faulty

You can probably find the manual for a similar model that's close enough here.

For more help from Magic Chef / Ewave see here or their contact page or order it here.

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

Try Magic Chef customer service here.

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

I would refer you to Magic Chef Customer Support.

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

There are typically 2 fans in these units. The fan that cools the magnetron and then the vent fan that intakes from the top of your stove then vents the air out or away from the unit. Are the lights that shine on the top of the stove working?? Sometimes if a bulb blows violently it can blow a trace off of the back of the main circuit board and that trace may also supply power to the fan

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101
uitot

Sounds like a bad magnetron, i would replace the magnetron, Capacitor and Diode at the mag assembly, to be honest it will cost you more to fix than a new one.............

Right, that would be MCO10UW and the owner's manual is here.

The owner's manual does say this, of course,

"To prevent overheating from taking place, the exhaust
fan is designed to automatically turn on at a low speed if
excessive temperatures occur. Should this happen, the
fan cannot be manually turned off, but it will
automatically turn off when the internal parts have
cooled. The fan may stay on for up to an hour after the
range and microwave oven controls have been turned
off."

That;'s standard on microwaves.

But these models do have a separate internal cooling fan (which should run any time you microwave) plus the hood vent exhaust fan, which should only run when you select it, or if there is an excessive stovetop or under-hood temperature.

So if it comes on whenever you microwave, that is incorrect.

When that happens, it's usually a defective vent thermal switch (a.k.a. hood TCO).

But since it's brand new, I would certainly contact Magic Chef about this. If it's in need of repair, they will fix it free, assuming the oven wasn't physically damaged.

For more help from Magic Chef / Ewave see here or their contact page.

For Magic Chef in Canada call 866.587.2002

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

I have a Magic Chef model MC0160UQ. Within 2-3 minutes of heating food it shuts off completely for about 5min. Also, when I select the low fan it does not work, however the high fan works. Please assist with these issues if possible. Am I able to fix or adjust the magnetron myself since it may be overheating? or what should i do?????