When the hose of your Philips Stand Garment Steamer is in a horizontal position, there might be condensation in it that cannot flow back into the water tank, and this might cause the head to drip water.
In this case, please lift the head of your stand steamer up in order to allow condensation to flow back to the tank. At the start of a steaming session, set the steam setting to be in MAX mode.
After this, hold the steamer head away from the garment and press the steam trigger for 10 seconds to release the initial gush of water droplets.
Note: The solution above does not apply to GC625, GC626, GC627 models.