The door alarm keeps beeping even after the door is closed

if unit keeping correct temp inside bad temp sensor

Pull the mains plug for 10 minutes. Don't open the doors, plug it back in. That should reset it.

1. Check to see if the fridge and the freezer are overfilled Over-stuffing in the freezer or the fridge or both of these compartments will prevent the doors from closing properly and which can cause the fridge's to set off the beeping alarm.
2. Check the fridge door seals: Broken or damaged door seals may stop the fridge from closing all the way. This can also happen if the seals are dirty. Wipe clean the door seals with a soft cloth and warm and use soapy water and close the fridge doors. If the door still appears ajar then you have to replace the door seals.It is also quite possible that the inbuilt door-alarm which sets off if the fridge door is ajar for more than a few minutes has gone bad . This would need to be looked at by a qualified repair person . Until, you can call a repair person transfer all the food items to another cool place.
3. Check the fridge balance: To work correctly the fridge must be placed on a levelled surface. Even a slight tilt in the fridge structure can set off the beeping alarm. Check to see if the fridge is balanced evenly.
4. Check to see if the fridge exterior is warmer than usual: Check if there is adequate distance between the fridge and walls to allow for proper ventilation. If you have already ensured this and the fridge exterior still appears warmer than usual, have an appliance engineer to take look at the problem. If the beeping continues, switch-off the fridge.
5. Check the freezer: If your fridge does not have an auto-defrost function then excessive ice-build up in the freezer can cause the beeping alarm to go off . If you see a lot of ice build-up in the icebox or freezer, switch off the fridge and let the ice thaw. Once the fridge is thawed, the beeping should stop.
6. Have a repair person check the circuit board: It is possible that there is an issue with the appliance's circuit board. If so it will most likely need replacement.

Fridge keeps beeping or buzzing: The following is for Frigidaire models but others can be addressed similarly.

Several Frigidaire refrigerator models have an electronic control panel on the freezer door the owner can use to adjust the internal temperature, dispense ice and water and receive notification about issues such as the need to replace a water filter. The refrigerators also emit a beep for various actions and as an occasional alarm. Determining what causes the beeps necessitates some troubleshooting.
Temperature Controls ·A Frigidaire refrigerator's display panel blinks when the control panel is touched to set temperature controls. After pressing "Freezer Temp" or "Refrigerator Temp" on the keypad, press the arrow buttons within five seconds to increase or decrease the desired temperature. If you do not press the arrow buttons within five seconds after pressing "Freezer Temp" or "Refrigerator Temp" on the keypad, the refrigerator beeps to indicate the current setting will stay in place.

Door Open ·When you leave the refrigerator or freezer door open, the refrigerator beeps. Also, the "Door Ajar" indicator illuminates on the appliance's display panel. Shutting the door and pressing "Alarm Reset" stops the beeping and turns off the "Door Ajar" indicator light.
·The Frigidaire refrigerator has a control lock feature that prevents use of its control panel or dispensers when the unit is locked. When the control lock is active, a beep sounds when a keypad or dispenser is pressed. Release the control lock by pressing the "Control Lock" icon for three seconds. A beep will sound, and the icon's light will go out.
Power Reset ·A power reset is occasionally necessary if the Frigidaire refrigerator's control panel does not work normally or a reset function on the keypad does not work. A power reset involves disconnecting power to the refrigerator by unplugging its power cord from the electrical outlet, waiting 30 seconds and plugging the power cord back into the electrical outlet. When the control panel resets, a beep sounds. If the refrigerator beeps even after a power reset and the beeps' source is not known, contact Frigidaire.


Read more :http://www.ehow.com/info_12148688_cause-beeping-noise-frigidaire-refrigerator.
Cause of Beeping Noise in Frigidaire Refrigerator eHow

Even though my door was closing fine it was beeping and saying "door ajar", so I first removed the switch. But that wasn't faulty and even with it out of the equation the beeping was there. I fiddled around some more but rather than rip everything apart, I popped out the electronics on the front and twisted off the little round black beeper in the circuit board.

Now I don't have a working door alarm. But otherwise: problem solved! ;)

Hi Hope, usually when the door(s) have been opened for longer than 10 minutes, an audio alarm sounds and the interior lights shut OFF. This protects the liner from melting due to the heat produced by the light bulbs. The alarm will sound every two minutes until the doors are closed. Once the doors are closed, the alarm is reset.

The refrigerator will also beep on some models to inform the user that the door has been left open and the cool air is escaping.

If the alarm keeps on going off after the doors have been closed and unit has been reset, I recommend contacting a professional technician so they can diagnose and repair your refrigerator.

I only received part of your problem. Could you please repost the problem along with your model number.
Thank you,Richard

hi,

you can check a limit switch at its door. it is located usually at the door area inside.
maybe it is not working already or get stuck that is why it doesn't sense that the door is closed.

most of the time it is getting stuck and you can fix it by just pulling it out or other ways to do it.

hope that solves your problem.

Don't forget to rate me. Thanks...

Regards,
John

I would try switching the breaker. That will probably work.

Open door and turn power off then on twice. Then press the Overtemp reset.