My microwave is in timer mode i hit cancel and cannot get it to cook mode

There should be a button labeled timer. Hit that then enter the time you want it to count down to. Then hit the timer button again.

If you have the kitchen timer set for instance for 10 minutes and it is counting down, and then you want to reheat you coffee for 2 minutes. You would hit either time cook or reheat button and enter 2 minutes ten hit start. The microwave will heat your coffee and show the 2 minute countdown for that. When done it will revert back to what is left on the 10 minute kitchen timer without missing a beat on most microwaves.

Check that a "favourite" setting has not been selected. The unit may think that is the time that you want to cook. Im not sure about your model but see if there is any clear or cancel buttons to clear any pre programmed selections. If not, unplug the machine for 15 minutes to reset the controller and try it again.

No! The problem is one or two bad door switches, or possibily the keypad control board.

The "F2" on a microwave can mean that the touch pad has a problem. Once I saw that message on a stove. The technician told me to press the "stop/cancel" button two times to reset the electronics. That fixed it. The electronics inside the microwave are usually timers and they adjust the strength of the microwaves for cooking. The best thing to do if the stop/cancel trick does not work, is to look at the owner's manual. If there is nothing there referring to that code, then copy the model number from the microwave (usually inside the door panel or sometimes at the back of the unit) and go to the manufacturer's website. Look for support, enter the required information and find out what the code really means.

Many times, it is better to let a professional take care of a repair on a microwave. If you leave something loose or not properly installed, you could endanger your health with microwaves hitting you improperly. Always be careful when working with this type of equipment.

I have a FNCB115GC Microwave problem. The microwave has a icon on the left hand side of the panel that looks like a opened book on a stand with lines on top. This is best that I can descibe it. The microwave turntable does not move or the microwave does to come on but the light comes on and the timer will count down. I have cleared the microwave and unplugged it with no results. Please help. Thanks in advance.

Do you mean that when you close the door, the fan comes on? If so, it sounds like a bad door switch. Probably the secondary interlock switch.
This failure is caused by opening the door when the unit is in cook mode. On ALL microwaves, not just one or two brands.......
Be sure to push the stop button before opening the door to add or stir... Or wait for the cook cycle to end. (This is why microwaves have a two step function on the stop/clear button. Hit stop once to stop cook mode and twice to reset timer).
You should use an ohm meter to check all 3 switches. The switch can be either stuck 'closed' or physically closed but not 'making' electrically.

Pressing "timer/clock" button 4 times turns on and off demo mode.

Quite often this is due to a bad door switch. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk