I can't open my S0310 Sentry safe. Combination doesn't seem to work

That is the best way. Changing the combination is done from inside the door panel. This is a dial safe, so not quite so easy. Sentry will tell you the original code. Having said that, most people who can't open a combination safe are doing it wrong. It isn't like they show it in the films, one way to number, other way to number, back again to a number and it opens. It is 4 complete revolutions to number, 3 revolutions to number, 2 revolutions to number and 1 part revolution to open the lock bar.

Videos that show.

https://www.google.com/search?q=sentry+safe+S0310

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Here is a link showing ways to open it. You can also open it with a rare earth puck magnet.

https://www.google.com/search?q=Sentry+S0310

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How to crack sentry safe, Lost safe combination - YouTube

? 5:43
https://www.youtube.com/watch?v=UdMun9qBgFo
Sep 25, 2012 - Uploaded by George Serrano
Lost safe combination Sentry Safe m# DS0100 Cracked! Still usable.

' Sentry® Safe ' DS3431 Combination FIRE-SAFE®

You must call (800) 828-1438 for combination retreivals.

If you need your combination, you must send a notarized letter stating you are the owner of the safe. (Note: the owner\'s last name must be different from that of the notary public). For locations that require a raised notary seal, use a pencil to shade the seal to insure that it is visible.


The notarized letter needs to include:

1. Your name, address and phone number.


2. The model number and serial number from your safe. The serial number is typically found on the front of the door, lower right corner on a small sticker; the right outside wall of your safe; or under the keypad/dial on the front of safe.


3. Please indicate how you would like to receive your combination. Options include first class mail, e-mail or fax. Your letter must clearly indicate which method you are choosing to receive your combination, as well as the mailing address, e-mail address, or fax number to which it should be sent. Note that failure to indicate the method in which your combination should be returned to you will result in delays to the process.


4. Special Circumstances
   
   
   
   • In the event you need to open the safe after the owner is deceased, your notarized letter will also need to include that you are now the owner or executor of the estate and need access to the safe. You must also include a copy of the ***** certificate.
   
   
   • If you hold Power of Attorney for the safe owner and need to access the safe, your notarized letter will also need to include that you are acting on behalf of the safe owner. You will need to include a complete copy of the Power of Attorney documentation to confirm that you have the authorization to act on their behalf in this type of circumstance.
   
   If you also need a key for your safe, you can order them online:
   
   REFERENCE THE ACTUAL KEY LOCK (WHERE THE KEY IS INSERTED) FOR SMALL SAFES AND CHESTS
   
   For Personal, Home and Home/Office Safes: (Model numbers will begin with: S0 (S0310, S0400, S0407, S0408, S0409, S0410), S3 (S3300, S3310, S3401, S3410, S3417, S3421, S3460, S3467, S3470, S3710, S3807, S3870, S3877, S3910), S4, S5; I0, I3, I4, I5; A3, A4, A5; J3, J4, J5; L0, L3, CS, CSW (CSW3460), DA (DA3831, DA3930), DS (DS3410, DS3431, DSW5781), KSW, MS, MSW, OA (OA3810, OA3821, OA5848), OS (OS0407, OS0410, OS0810, OS3407, OS3421, OS3470), SC, and X (X031, X075, X105, X125)): Indicate your model number and the safe serial number is found on the front right-hand side of the door, between the hinges.

Keys Sentry Safe Replacement KeysLost Combination My Sentry Safe Combination Sentry Safe Shop Keys Sentry Safe Replacement Keys Lost Combination My Sentry Safe Combination Sentry Safe Shop

You must call (800) 828-1438 for combination retreivals.

If you need your combination, you must send a notarized letter stating you are the owner of the safe. (Note: the owner\'s last name must be different from that of the notary public). For locations that require a raised notary seal, use a pencil to shade the seal to insure that it is visible.


The notarized letter needs to include:

1. Your name, address and phone number.


2. The model number and serial number from your safe. The serial number is typically found on the front of the door, lower right corner on a small sticker; the right outside wall of your safe; or under the keypad/dial on the front of safe.


3. Please indicate how you would like to receive your combination. Options include first class mail, e-mail or fax. Your letter must clearly indicate which method you are choosing to receive your combination, as well as the mailing address, e-mail address, or fax number to which it should be sent. Note that failure to indicate the method in which your combination should be returned to you will result in delays to the process.


4. Special Circumstances
   
   
   
   • In the event you need to open the safe after the owner is deceased, your notarized letter will also need to include that you are now the owner or executor of the estate and need access to the safe. You must also include a copy of the ***** certificate.
   
   
   • If you hold Power of Attorney for the safe owner and need to access the safe, your notarized letter will also need to include that you are acting on behalf of the safe owner. You will need to include a complete copy of the Power of Attorney documentation to confirm that you have the authorization to act on their behalf in this type of circumstance.
   
   If you also need a key for your safe, you can order them online:
   
   REFERENCE THE ACTUAL KEY LOCK (WHERE THE KEY IS INSERTED) FOR SMALL SAFES AND CHESTS
   
   For Personal, Home and Home/Office Safes: (Model numbers will begin with: S0 (S0310, S0400, S0407, S0408, S0409, S0410), S3 (S3300, S3310, S3401, S3410, S3417, S3421, S3460, S3467, S3470, S3710, S3807, S3870, S3877, S3910), S4, S5; I0, I3, I4, I5; A3, A4, A5; J3, J4, J5; L0, L3, CS, CSW (CSW3460), DA (DA3831, DA3930), DS (DS3410, DS3431, DSW5781), KSW, MS, MSW, OA (OA3810, OA3821, OA5848), OS (OS0407, OS0410, OS0810, OS3407, OS3421, OS3470), SC, and X (X031, X075, X105, X125)): Indicate your model number and the safe serial number is found on the front right-hand side of the door, between the hinges.

Keys Sentry Safe Replacement Keys Lost Combination My Sentry Safe Combination Sentry Safe Shop

refer to owners manual for reset code or contact lock smith

Hi Juli, if you still have the manual, there is a factory code printed on the beginning page and that code can be used if you forgot your code. The factory code can never be deleted. If you dont have your manual anymore then the only other option is to call the company and they might be able to give you the factory code somehow.

Sentry Safe Customer Service - 1-800-828-1438

Sentry Safe lost combination. First, find your sentry floor safe's Serial Number. The Serial Number is printed on the small label on the right side of safe, on paper tag near bottom hinge, below the cover plate or you can look behind the handle with a mirror. Just note your model # and the serial #.
Sentry Safes express combination research is fast with a next day Service. The email is sent the next business day with the sentry safe combination and opening instructions. Although there is a service charge it's still cheaper then locksmith drilling a Sentry Fireproof Safe open.

Locksmiths agree sometimes even with the green light the safe’s batteries are not strong enough to retract the latch. Try replacing them with some new alkaline batteries