Troubleshooting The steam boost in my Philips Steam Iron is not working Find out below why the steam boost in your Philips Steam Iron is not working and how to activate it. Steam irons: The steam boost trigger has not been pressed and released To activate the steam boost in your Philips Steam Iron, press and release the steam boost trigger. Note: Steam boost is not available at the 1 dot and 2 dot temperature settings. Steam irons: The steam boost function has been used too often When you use the steam boost function of your Philips Steam Iron too often within a short period of time, the steam boost function will stop working for a while. In this case, please wait a couple of minutes until the steam boost can be used again. Steam generator irons: The steam trigger was not pressed twice quickly To activate the steam boost in your Philips Steam Generator Iron, press the steam trigger twice in quick succession. To deactivate it, just press the trigger again once. Note: Depending on the model you have, once you press the steam trigger twice in quick succession, you might get a burst of steam for 3 seconds, continuous steam or pulsating steam.