How To Clear An Airlock In Hot Water System Link -

To avoid airlocks in the future, make sure to:

Shut off both the hot and cold water valves leading into the washing machine. Disconnect: Unscrew the pipes from the back of the machine.

Use tape or ties to ensure the connections are airtight. If the pressure blows the hose off, the trick won't work.

Here is a comprehensive guide on how to clear an airlock, ranging from the easiest DIY methods to the professional solution.

A short piece of garden hose and some duct tape or cable ties.

An airlock happens when a pocket of trapped air prevents hot water from flowing from your cylinder or boiler to your taps. This is common after draining your system for repairs, a mains pressure drop, or refilling the system after a vacation.