Access the Clock Setting Through the Control Panel

To change the time on your Samsung microwave, press the Clock button on the control panel. This button is usually located near the top of the keypad and may be labeled "Clock," "Time," or show a clock icon. A display will appear showing the current time, often with a colon blinking between the hours and minutes to signal that the microwave is ready for input.

If you do not see a Clock button, check your microwave's manual for the exact button name—some older Samsung models use Time Entry or Set Time instead. The manual came with your microwave or is available on Samsung's website if you search for your model number, which is printed on a sticker inside the microwave door or on the back of the unit.

Key Takeaways

  • Press the Clock button on your control panel to begin setting the time; the display will show the current time with a blinking colon.
  • Enter the time using the number pad in 24-hour or 12-hour format depending on your model, then press Clock again to confirm.
  • If the time does not stick after you close the door, the microwave may have lost power or the backup battery may need replacement.
  • Holding the Clock button for three to five seconds will clear the time on most Samsung models if you need to start over.
  • Refer to your model-specific manual for exact button names and sequences, as Samsung microwaves vary by year and feature set.

Enter the Time Using the Number Pad

Once the Clock button is pressed, use the number pad to type in the time. Most Samsung microwaves accept time in 24-hour format (military time), so 1:00 p.m. would be entered as 13:00. Some models with a 12-hour display will ask you to press an AM/PM button after entering the numbers. Press the numbers in order—for example, for 9:30 a.m., press 0, 9, 3, 0 on the keypad.

Do not press the Start button. Instead, press the Clock button again to confirm the time you have entered. The display should stop blinking and hold the new time steady. If the time does not appear to change, the microwave may not have registered your input—try pressing Clock again and re-entering the numbers more slowly, waiting a half-second between each digit.

Confirm the Time Appears When You Close the Door

After you press Clock to confirm, close the microwave door. The time should remain visible on the display. Leave the microwave unplugged for at least 30 seconds, then plug it back in. Open the door and check that the time is still there. If the time has reset to 12:00 or 00:00, the microwave's backup battery may be weak or dead.

The backup battery is a small coin-cell or AA battery located behind the control panel or inside the microwave cabinet. If the time does not hold after a power cycle, you will need to replace this battery. Refer to your manual for the exact location and battery type for your model—common types are CR2032 or AA alkaline batteries. If you are not comfortable opening the microwave, contact Samsung support or a service technician.

Reset the Clock if You Make a Mistake

If you enter the wrong time and want to start over without confirming, hold down the Clock button for three to five seconds. The display should clear or return to the previous time. Release the button and press Clock again to begin entering the correct time. This works on most Samsung models, though some older units may require you to unplug the microwave for 30 seconds to reset the clock.

If holding the button does not work, check your manual for a "Clear" or "Reset" button on the control panel. Some Samsung microwaves have a dedicated button for this purpose. If you cannot find one, unplugging the unit for half a minute will force a reset on nearly all models.

Understand 12-Hour Versus 24-Hour Time Format

Samsung microwaves display time in different formats depending on the model. 24-hour format (also called military time) runs from 00:00 to 23:59, so noon is 12:00 and 1:00 p.m. is 13:00. 12-hour format runs from 12:00 a.m. to 11:59 p.m. and requires you to press an AM or PM button after entering the numbers.

Your microwave's manual will state which format your model uses. If your display shows times like 13:00, 14:00, or 23:00, you have a 24-hour model. If it shows 1:00 PM or 11:00 PM with an AM/PM indicator, you have a 12-hour model. You cannot change the format on most Samsung microwaves—it is set at the factory. If you prefer the other format, the manual may list a service code to change it, but this usually requires calling Samsung support.

Troubleshoot When the Time Will Not Stay Set

If you set the time correctly but it resets to 12:00 or 00:00 every time you unplug the microwave or lose power, the backup battery is the most common cause. This battery keeps the clock running during a power outage and stores the time when the unit is unplugged. A weak or dead battery cannot hold the time, so you will need to replace it.

A second cause is a loose connection between the control panel and the main board. If the battery is new and the time still will not hold, the microwave may have an internal wiring issue. Contact Samsung support with your model number, or call a local appliance repair service. Do not attempt to open the microwave yourself unless you are trained to work with electrical appliances—the high-voltage capacitor inside can cause serious injury even when unplugged.

Frequently Asked Questions

What if my Samsung microwave does not have a Clock button?

Some compact or older Samsung models do not display a clock at all. Check your manual to confirm whether your model has a clock feature. If it does not, you will need to refer to a wall clock or your phone for cooking times. Some newer Samsung models integrate with smart home systems and pull the time from your Wi-Fi network instead of a manual button.

Can I change the time format from 24-hour to 12-hour?

Most Samsung microwaves are locked into one format at the factory and cannot be changed by the user. Your manual will state which format your model uses. If you need to change it, contact Samsung support—some models have a service code that a technician can enter, but this is not a standard user function.

Why does the time disappear when I open the door?

Some Samsung models turn off the display when the door is open to save energy. This is normal. The time will reappear when you close the door. If the time disappears and does not come back after closing the door, the display itself may be faulty—contact Samsung support.

How often should I replace the backup battery?

A backup battery typically lasts three to five years, depending on how often the microwave loses power. If you live in an area with frequent outages, the battery may drain faster. Replace it as soon as you notice the time will not hold after a power loss.

Is it safe to open the microwave to replace the battery myself?

Opening the cabinet to access the battery is usually safe if you unplug the microwave first and avoid touching the high-voltage capacitor. However, if you are not comfortable doing this, a service technician or Samsung support can walk you through it or handle it for you. Your safety is more important than the cost of a service call.