This problem may be due to the following scenario:
 
If the iron is frequently put back on the base station, steam condensation will occur. The condensed steam is safely guided through the base station internally. Because of this, you might notice water droplets underneath the base station. Refer to Fig. 1. In this case, rest the iron vertically on its heel during ironing. Refer to Fig. 2.

If this does not resolve your issue, please contact the Philips Consumer Care Center in your country. You will find its phone number in the worldwide guarantee leaflet, or on the Philips online support page.