Flushing the Water System: Use a sturdy container to depress and hold the water dispenser lever for 5 seconds and then release it for 5 seconds. Repeat the process until water starts to flow at a steady pass and all the air is out of the water line.
Air rises. Open all the faucets, hot and cold lines. Start low and work high. Once you have a steady stream of water, close the faucets. Hopefully, all the air will escape. There may be some residual air that should get removed over time.
If you have pressure on the hot side then cover the tap with a hand, hard, and turn both taps open. The high pressure should help force the air lock back up to the tank.
The most common cause of the sputtering is a dirty water filter - and I suggest you replace the filter to resolve that.
It can be normal for a faucet to sputter when the hot water is first turned on if there is air in the hot water lines or issues with the water heater. However, persistent sputtering may indicate a need for water heater maintenance or flushing to remove sediment buildup.
To ensure you achieve clean water lines in the fridge, you must flush them. Using a small funnel, slowly pour two to three cups of distilled white vinegar into the tube that leads to the water dispenser. Let the vinegar sit in the reservoir for five to ten minutes to thoroughly clean the system.
Does your filter housing have a pressure relief valve on the top? If it does, as the housing is refilling after you change your filter, press the button in and allow the air to release (until water starts to bubble out around the button).
Begin the flushing procedure by opening the hot water taps in your bathroom(s). Open ALL hot water sink fixtures, hot water bathtub or shower fixtures. Next, open all other hot water fixtures, such as in kitchens, wet bars, etc. Run all of these hot water fixtures for 15 minutes, then shut the water off.
Will an Airlock Eventually Clear Itself? Sometimes, small airlocks may clear themselves as water circulation continues with one or more radiators. However, larger airlocks often require manual intervention, like bleeding the radiators or using a hose to release the trapped air.
While these sounds can be scary and seem like serious issues, the cause is usually quite benign. Most often, a loud sound coming from your pipes is caused by trapped air. By turning off your main water supply and running all faucets for 10-15 minutes, you force any trapped air through your water pipes.
If the water line is clogged, it can usually be cleaned out by running vinegar and baking soda through the line. Clogs are likely to occur if there is a flaw in the water line or if the water filter is not updated.
If your well can't get enough water supply due to drought, the pump system will suck in air as it functions. The trapped air will make its way into your piping and faucets. The problem will persist for as long as the drought continues.
Bleed the Air: To fix an airlock, you'll need to “bleed” the air out of the system. This can usually be done by holding down the water dispense button or lever until water starts flowing again. Check for Leaks: After bleeding the air, check for any leaks in the system.
To clear air out of your water line, press the water dispenser lever for one or two minutes. You need to flush the water system to remove air (bubble) inside of the water line. Air can go into the water line due to a bad water connection.
Use a sturdy container to depress and hold the water dispenser lever for 5 seconds and then release it for 5 seconds. Repeat the process until water starts to flow at a steady pass and all the air is out of the water line.
To prime the water supply system, do the following:
Begin filling the system by pressing and holding a drinking glass or pitcher against the water dispenser paddle. Keep the glass or pitcher in this position until the water comes out of the dispenser. It may take about 1-2 minutes.
Turn On Faucets Throughout Your Home
It is only necessary to open the faucets a half turn to allow the air in your pipes to escape. After you turn on all the cold and hot water faucets in your house, you should also flush your toilets to clear out the air trapped in your pipes.
Noisy pipes: Loud banging, hammering, or gurgling noises coming from your pipes can indicate the presence of air bubbles. Sputtering faucets: If your faucets are sputtering or spitting water when turned on, this is a clear sign that air is trapped in your plumbing system.
Rapid Pressure Changes: Quickly shutting off a valve or turning off a large appliance like a washing machine can cause a pressure surge, sucking air into the pipes. Leaks or Repairs: When plumbing repairs are made or leaks occur it can allow air to be drawn into the system, especially at high points in the plumbing.