Lffh21f7hwa Have FRIGIDAIRE upright freezer but no owners manual. I need assistance resetting the digital display one the door. Display reads "0F" but temp continues to go up. Contents are thawing. Please assist.

The error code -H9 on a Frigidaire upright freezer typically indicates a communication error between the control board and the display board. To troubleshoot this issue, try unplugging the freezer for a few minutes, then plugging it back in to see if the error code clears. If the error persists, it may be necessary to replace one or both of the boards. Contact a qualified appliance repair technician for further assistance.

Running all the time means you either have to clear/clean your condenser... Check for good tight door seals... and make sure the doors/vents are not blocked by any contents...

Free flowing cold dry air inside... sealed compartments is ideal.

Dollar Pull test:
Use the dollar bill pull test all round your doors...
(brown paper sack is cleaner & nicer):

You can take the paper...
close the door on it..
Pulling it out you should feel mild but constant pressure around the full perimeter of each door (or drawer).

If you do NOT feel it the door/drawer needs to be checked for gasket integrity... and the door may need to be adjusted.

New door gaskets are not terribly expensive
(but most issues are caused by spilled food, cleaning
or door adjustments = easy).

(FULLY covered in every owners manual I've read).

Consider purchasing 2 TAYLOR BRAND refrigerator
thermometer & turning the freezer to the ZERO Fahrenheit
area and the refrigerator to 33 or 34 degrees above zero
(32 degrees Fahrenheit... being frozen eggs & milk (too cold)).

Else... comment me back...

We can take this all the way into refrigerant level check if you find NOTHING ELSE WRONG

((HIGHLY IMPROBABLE... but do-able)).

You gasket is showing as no longer
available... at appliancepartspros.com...

So be gentle!!!

http://www.appliancepartspros.com/frigidaire-gasket-door-white-216522312-ap2113453.html (Frigidaire 216522312)

I appreciate your post, Clayton!

From the information you have provided the display board on your Frigidaire freezer reads "OF". That reading means your freezer is off, you should be able to turn it back on by pressing the up or down arrow five times in a row. If you need any additional assistance please feel free to reconnect. I hope this is helpful to you. -Matt

Thank you for your post, Cynthia!

Based off the information you have provided your Frigidaire freezer is not cooling properly and is now displaying the temperature of 56. It sounds like your freezer is not on, even though it has power the compressor is not turned on. I would suggest pressing either the down or up arrow three times within five seconds. That should power on your compressor and it should start cooling properly. I hope this is helpful and if you should need further assistance please feel free to reconnect. -Matt

Good Morning Stephanie Garcia, thank you for your post!

From the information you have provided your Frigidaire freezer is displaying an error code of "OF". Typically, an "OF" stands for power off, you should be able to press the up arrow three times in a row within five seconds to turn your freezer back on. If that does not help correct your issue you may want to perform a reset and you can do that by unplugging the power cord for roughly ten minutes. I hope this helps. -Matt

Hey friend, thanks for your post!

From my understanding you have recently moved your Frigidaire freezer and it is now displaying the "OF". Normally, that stands for off you should be able to press the "Up" or "Down" arrow three times within five seconds to start your compressor. If you still need a copy of your manual could you provide me with your model number? You can locate your serial tag (which lists your model number) on the inside wall of your freezer. I hope this has been helpful. -Matt

Good Morning Friend,

I understand you want to know how to install a new door gasket on your Frigidaire freezer, model# LFFH21F7HWA. Typically this is not a do it yourself repair, as there are no step by step instruction manuals that will tell you how to do this. I suggest either contacting the manufacturer or your local authorized technician for further assistance. The technician has been trained on your specific appliance, and should be able to replace the new gasket with ease. Hope this is helpful.

-Best Regards-
WP

Hello - Typically "OF" indicates that the freezer is turn off. To activate freezer, press UP three times until display shows "1" then press UP to desired setting. If it will not allow you to change setting and freezer continues to be off, try resetting the freezer by unplugging it or flipping the breaker off. Wait approximately ten minutes and turn it on. If "OF" continues to display, the unit could possibly have a communication problem with the electronic control assembly. Contact a professional to move forward accurately.

Zero degrees F is the normal operating temperature for a freezer. The compressor should not come on until the time is above that.