Make sure your carbonating bottle is filled just to the "Water Fill Line" indicator (the lower of the two pronounced ridges near the neck of the bottle.)
Other possible causes for overflow:
If you still have trouble with overflow after checking these tips, please contact Customer Support for advanced troubleshooting!
Not at all. Normally after carbonating a bottle of water, there is a small amount of gas in the soda maker. The tilt of the bottle releases that gas as a safety measure. The amount of gas lost is not problematic, as this gas has already passed through the water as a part of the normal carbonation process.
If you hear gas escaping while you are carbonating your drink (i.e. while pressing the carbonating button) you may need to screw the carbonator more tightly to the soda maker. If the gas continues to escape continuously, this indicates that the sealing washer (the black rubber gasket inside the soda maker where the carbonator connects) is missing or damaged.
There is a spare washer located inside the soda makers on some, but not all models. We recommend you replace the sealing washer in your soda maker every 18 months to 2 years. Additional spare washers are available through SodaStream Customer Support.
There are a number of indications that show your carbonator is empty:
Please note: SodaStream recommends that you keep a spare carbonator in the cupboard so that when one carbonator runs out, you simply swap the empty carbonator for the full one. That way, you'll keep enjoying fresh, fizzy drinks and can return the empty carbonator as you order your next gas refill.
Usually this is a sign that there may be two sealer washers in the carbonating gasket head. The sealer washer is a small, black, O-shaped ring about ½" in diameter. To try and correct this problem, first remove the carbonator cover in back of the machine. Unscrew the carbonator from the fitting and lift the machine so you can see inside the gasket head. Using tweezers or a small screwdriver, attempt to remove the black rubber washer from the head. If there is a second one underneath it, you've just solved your problem! If not, please replace the washer in its original position and call Customer Support.
Flat soda may indicate that you have not carbonated properly. After twisting the carbonating bottle into place, press the carbonating button ALL THE WAY DOWN in firm short bursts. You will hear a hissing sound at first. Continue to press the button in firm short bursts until you hear a LOUD BUZZ. The loud buzz indicates the first level of carbonation. Three loud buzzes will achieve average carbonation.
Another tip: Make sure you use very cold water for carbonation. Cold water (from the refrigerator) holds carbonation much better than cold water from the tap. We recommend keeping carbonating bottles full of water in your refrigerator so they are always ready to go when you want a fresh soda!
The SodaStream system is designed to allow users to choose how sweet and fizzy they want their drinks. If you have used the recommended amount of syrup in your drink, try adding a little more until you find the level of flavor you like best.