Door ajar alarm keeps beeping, ice buildup around inside door

Hello Deena;

My name is Peter. I am a retired field service refrigeration technician.

There is no reset for the alarm. The alarm goes off when you are not maintaining temperature.

During the time the door was ajar, warm air got into the freezer either icing up and locking the cooling fan or forming a block of ice on the cooling coils (Restricting cooling air flow.)

The best thing you can do, unless you want a $300.00 plus service call to defrost everything, is to turn power off to the freezer. Open the freezer door. Have plenty of old towels to soak up the water in the bottom of the freezer as it defrost.

You did not provide a model number which is located on the inside wall of the freezer. Every 8-10 hours your freezer will completely shout down for 20-30 minutes where only the light works and the defrost heater turns on. The ice build up is too much for the defrost heater to handle.

In some freezers the defrost mode is in the control board, in others it is a separate component that you can repeat trip using a flat head screw drive.

I hope he checked the door ajar switch, if that is jumped, then the control board has failed

this could be an issue with the defrost cycle. if ice build up accumulates the on the inside coil (evaporator), it restricts the air flow and you get alarms for being out of temp. usual signs are ice build up around the coil area. look for that first. be sure the door closes and seals too.

Thank you for your post, friend!
Based off what you are describing it sounds like a possible issue within your control panel or door switch of your Frigidaire freezer, LFFH21F7HW6. You have completed a reset on your appliance by disconnecting power. I would recommend seeking assistance from a professional to properly diagnose and repair your freezer. Hope this is helpful. -Matt

Hey friend, thank you for your post!

In order to stop the door ajar alarm from beeping when the door is closed you would need to reset the alarm. If you have done that and it continues to beep it could be an issue within the switch or panel of your Frigidaire freezer. I would recommend having a professional come out to properly diagnose your appliance. -Matt

Cut off the circuit. Everything runs on the system together so you may need to contact someone that knows what they are dong.

If you had the door open for that long you will need to unplug and allow the ice buildup that happens when door is left open to thaw. After this you need only to plug the refrigerator back into the power source.Let me know what happens It is not going to work correctly until this is done. Sea Breeze

This is a symptom of air leaking into the freezer. The most common place is around the door. Check the door really good to make sure something is not obstructing it from closing all the way, it may be closing enough to satisfy the ajar alarm but not enough for a bit of moisture to sneak in. Look for tears or breaks in the seal. If you put a bright flashlight inside the freezer and close the door, turn off the lights in the room you may find a leak that way.

You should unplugged and let all the ice melt and help it with a hair dryer.

The reason for ice buildup is an air leak. Recheck all around the gasket by taking a dollar bill and closing the door on it and pulling it out. If you don't have resistance, you found your leak. Heat that area with a blow dryer to relax the gasket and close the door to let the magnet and seal set. Also, rub some vasoline on the hinge side gasket to keep it from dragging.