Fridgidaire dyrer three years old

if 10 yrs old thats usually the life span and should be replaced --three things cause the detector to go off if actual smoke/fire condition --low battery ---or internal component failure [ ionizer ]

1. Since all of the settings seem to go through the start/stop button, hold it down for three seconds to put it in "set the watch mode" (when the seconds at the bottom start blinking).
2. Do a quick press of the start/stop button to move from seconds to minutes to hours to years to months to days. The mode button subtracts & the reset button adds.
3. Setting alarms & so on require putting it alarm mode via the mode button. Use the reset button to move to the selected alarm (1-5). 
4. Hold the start/stop button for three seconds to "set the alarm mode."
5. Quickly press the start/stop button to between things to set (kind of alarm, hours, minutes).
6. Again, the mode button subtracts & the reset button adds.
7. A three-second press of the start/stop button exits the setup mode.

Then it may well need a service or check the alarm

probably your blower motor resistor has fried, not an expensive fix ath a garage

I'm not familiar with your system... but, I'd suggest changing any and all batteries, if it happens again. I don't know about your controller lights, but I do know that the battery does not have to get very low in an alarm before it starts giving you an occasional warning chirp.. If your battery or batteries are over a year old, you should change them, anyway. If a new battery (batteries) doesn't fix your problem, you might try vacuuming or blowing some air into the works on the chance you might dislodge some foreign particle that might be causing this. That said, though, I have had to trash fire alarms that did just how you're describing... because, no matter what, I couldn't make them be quiet.

You are safe. :) It may have shut off from a voltage spike or brown-out on the line. There are several fuses inside of the TV that are supposed to blow before anything catches fire. If it starts smelling again, then unplug it and take it to a service center.

the fan inside the freeze isn't working that what circulates the air to the fridg

Bad oven control circuit board. Look up on eBay

the problem with that is probably that your blub has gone out and need to replace it.