SUN SAFES MFG. CO. KOREA
YES / V4 Series
User Manual
Find out how to open and lock your safe, set your passwords, replace the batteries and resolve common problems.
Before changing a password or replacing batteries
Keep the door open and confirm that the safe operates correctly before closing it. After setting a new password, test it with the door open.
1. First use & safety
Getting started
- Read the safety precautions and identify the controls on your safe.
- For a safe still using its factory setting, follow the opening instructions with 123456.
- Set a personal 6-digit password using the password instructions. Confirm that it works with the door open before storing items and locking the safe.
Handling and installation
- Keep fingers and objects clear of the door when opening or closing it. Keep children away from the safe.
- Take care around the edges of the safe to avoid injury.
- The safe is heavy. Take care when moving or installing it, and use professional assistance when needed. Improper handling may injure people or damage floors and furniture.
- Place the safe on a flat surface so the door closes correctly. Secure it firmly to the floor where applicable; see anchoring instructions for models with pre-drilled anchor holes.
- Do not place fragile objects, such as glass or ceramics, on top of the safe. They may fall and cause injury.
Care and maintenance
- Keep moisture and foreign metal objects out of the keypad.
- Do not scratch the keypad with sharp objects or press it with excessive force.
- Avoid exposure to gasoline, benzene, solvents, acetone, thinner and other chemicals.
- Keep the safe away from direct fire and heat.
- Remove the batteries if the safe will not be used for a long period.
- Do not force the handle. Excessive force may cause breakage.
Reference: PDF page 2.
2. Keypad & parts
The manual shows several keypad and handle designs. Locate the controls that match your safe before following the steps below.
- START: begins password entry and is used for the settings described in this guide.
- Display screen: shows entry prompts, confirmations and error messages.
- Numeric keypad: used to enter your 6-digit password and select settings.
- Handle and/or key: used to open and lock the door after the electronic lock releases.
- Battery cover and hooks: retain the cover over the battery compartment.
- White memory button: located inside the door; used for password and sound settings.
3. Opening & locking the safe
Open the door
- Press START. The screen displays ------.
- Enter your 6-digit password. The factory password is 123456. When the password is accepted, the display shows OPEn with a beep.
- Open within 3–4 seconds. Operate the handle and/or key for your model. For a model fitted with both, turn the key counter-clockwise, then turn the handle clockwise and open the door.
Hide or cancel an entry
For security mode, press START twice before entering your password to hide it on the display. To cancel a password entry in progress, press START.
If the password is rejected
Err-03 means the password is incorrect. Five consecutive incorrect passwords trigger an alarm for 3 minutes. Press START and enter the correct password to stop it, or wait for the alarm to stop automatically.
The screen says OPEn, but the door will not open?
The batteries may be low even when the green light is on. Replace them and check the handle/key direction. If the problem continues, contact the store where you purchased the safe. Do not force the handle.
Close and lock the door
- Close the door carefully, keeping fingers and objects clear.
- Return the handle and/or key to its original locked position.
- Confirm that the door is properly closed and locked before leaving the safe.
Reference: PDF pages 5 and 7.
4. Changing or adding a password
The safe supports either one or two passwords. Each password has 6 digits. Select slot 1 for the first password or slot 2 to add a second password.
Keep the door open throughout setup and testing. Do not close it until you have confirmed that the new password works.
Set the first password
- Enter the current password and open the door.
- Press the white memory button inside the door. The display shows -CodE-, then USEr_.
- Press 1, then START. The display shows ------.
- Enter the new 6-digit password. The display shows AgAin, then ------.
- Enter the same new password again. For the first password, In 1 confirms that it has been set.
- Test the new password with the door open. Close and lock the safe only after the test succeeds.
Add a second password
Repeat the procedure above, selecting 2 instead of 1 at step 3, followed by START. Enter the second 6-digit password and enter it again when prompted. Test it with the door open.
If setup times out: repeat the procedure without pausing between entries. The troubleshooting section of the original manual instructs you to enter the password in under 5 seconds. If the keypad or memory button does not work, contact the store where you purchased the safe.
Reference: PDF pages 6 and 7.
5. Keypad lock mode
When this mode is active, keypad input displays Act. Deactivate the mode before entering your password.
Activate
Press and hold START for more than 3 seconds, until Act appears.
Deactivate
Press and hold START for more than 3 seconds, until dEAct appears. Then follow the normal opening procedure.
Removing the batteries does not cancel keypad lock mode. Use the START hold procedure to deactivate it.
Reference: PDF page 3.
6. Sound ON / OFF
- Open the door.
- Press and hold the white memory button for 3 seconds, until On-OFF appears after the beep indication.
- Select the setting below and press START.
| Setting | Button sequence |
|---|---|
| Sound ON | 0 → START |
| Sound OFF | 1 → START |
Reference: PDF page 6.
7. Replacing batteries
When to replace them
Replace the batteries immediately if any of the following occurs:
- The display shows Lo_bAt.
- The password is accepted and OPEn appears, but the safe does not open.
- good appears with a “beep beep” sound after password entry.
- The display does not turn on when you press START.
Replacement procedure
- Locate and remove the battery cover shown in the keypad illustration.
- Replace the batteries with four 1.5 V AA alkaline batteries. Check that they are inserted in the correct direction.
- Refit the cover until it clicks into place.
- Check the startup display: SAFE → _O… → good, followed by a beep.
- Confirm that the safe operates correctly with the door open before closing it.
The context of “good” matters. It is part of the normal startup sequence after battery replacement. When it appears with “beep beep” after password entry, the manual lists it as a reason to replace the batteries.
If the display remains blank, check battery direction and whether keypad lock mode is active. If the problem remains, contact the store where you purchased the safe.
Reference: PDF pages 4 and 7.
8. Display message guide
Use the message and the action you were performing to identify the next step.
| Display | Meaning / next step |
|---|---|
| ------ | Ready for a 6-digit password entry. |
| OPEn | Password accepted. Operate the handle and/or key within 3–4 seconds. |
| Err-03 | Incorrect password. Enter the correct password; five consecutive incorrect entries trigger a 3-minute alarm. |
| Act | Keypad lock mode active. Hold START for more than 3 seconds to deactivate. |
| dEAct | Keypad lock mode deactivated. |
| Lo_bAt | Low batteries. Replace with four 1.5 V AA alkaline batteries. |
| -CodE- / USEr_ | Password setup. Select 1 or 2, then START. |
| AgAin | Enter the new password again to confirm it. |
| In 1 | First password set. Test it with the door open. |
| On-OFF | Sound setting. Press 0 then START for ON, or 1 then START for OFF. |
| SAFE → _O… → good | Startup sequence confirming correct battery insertion when followed by a beep. |
| good + “beep beep” | After password entry: replace the batteries. |
Reference: PDF pages 3–7.
9. Troubleshooting
No response when START is pressed
- Replace depleted batteries with four 1.5 V AA alkaline batteries.
- Check that all batteries are inserted correctly.
- If keypad lock mode is active, hold START for more than 3 seconds until dEAct appears.
- If there is still no response, contact the purchase store; a circuit fault may require service.
The alarm keeps sounding
Five consecutive incorrect password entries trigger the alarm. Press START and enter the correct password, or wait 3 minutes for it to stop automatically.
Err-03 appears
The entered password is incorrect. Use the correct 6-digit password. If you have forgotten it, contact the store where you purchased the safe.
Green light / OPEn appears, but the door stays locked
- Replace the batteries; low batteries can cause this symptom.
- Check the handle/key direction. For models with both, turn the key counter-clockwise, then the handle clockwise.
- If the door still does not open, contact the purchase store. The locking equipment may require service.
The password cannot be changed
Repeat the password setup with the door open. Enter the password in under 5 seconds, as specified in the original troubleshooting guide. If a keypad or button fault prevents setup, contact the purchase store.
Lo_bAt or Act appears
Lo_bAt: replace the batteries. Act: hold START for more than 3 seconds until dEAct appears to deactivate keypad lock mode.
Password forgotten or key lost
Contact the store where you purchased the safe for assistance.
Reference: PDF page 7.
10. Anchoring the safe
For models with pre-drilled anchor holes only. The safe is heavy; arrange professional assistance when needed. Install the anchor bolt in the floor before bolting down the safe.
Anchor bolts vary by model. Check the supplied hardware before beginning. The original manual lists the following metric sizes; confirm the drilling requirements for your actual anchor and floor with the installer.
| Anchor size listed in manual | Hole diameter listed |
|---|---|
| M6 × 50 mm | 10 mm |
| M10 × 101 mm | 14 mm |
| M10 × 152 mm | 14 mm |
- Check the anchor size. The manual specifies a hole depth of 50 mm (2 inches); use the appropriate hole diameter for the anchor.
- Insert the anchor bolt and anchor pipe into the floor hole.
- Fit the flat washer and nut. The manual specifies a 14 mm wrench to tighten the nut so the anchor expands and is secured in the floor.
- Remove the nut and washer from the secured anchor bolt.
- Position the safe over the bolt so it passes through the pre-drilled hole in the bottom of the safe.
- Fit the washer, lock washer and nut, then tighten.
The bolt may need to be cut. Fit the cover over the hole for fire resistance, as shown in the original manual.
Reference: PDF page 8. Consult the PDF for the complete original anchoring diagram.
11. Frequently asked questions
What is the factory password?
The factory password is 123456. If the safe has already been programmed, use the current password. Follow Changing or adding a password to set a personal password, and test it with the door open.
Can two people use different passwords?
The safe can store two passwords. Select 2 followed by START at the slot-selection step of password setup, then enter and confirm the second 6-digit password. Test it with the door open.
Will removing the batteries cancel keypad lock mode?
No. Keypad lock mode remains active after battery removal. Hold START for more than 3 seconds until dEAct appears.
Why does the safe accept my password but fail to open?
Low batteries may cause this even when the green light is on and OPEn is displayed. Replace the batteries, check the handle/key direction, and contact the purchase store if it still will not open.
Where is the password-setting button?
The white memory button is inside the door. Open the safe using the current password before starting setup. See the button illustration and full procedure.
What should I do if I forget the password or lose the key?
Contact the store where you purchased the safe.
12. PDF manual & support
Keep a copy of your manual
Download the original 8-page English manual for offline reference, including the original illustrations and installation diagram.
Need assistance?
If these steps do not resolve the problem, contact the store where you purchased the safe. For a forgotten password, a lost key, or a suspected keypad, circuit or locking fault, the original manual directs you to the purchase store.
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