If the charging light does not go on, check with your appliance if:
You have inserted the adapter into the wall socked properly.
The handheld vacuum cleaner is placed well in the stick unit. (Fig.1)
You have placed the appliance onto the charging base properly. (Fig.2)
The contact points on the stick unit and/or on the handheld vacuum cleaner may be dirty or may not make proper contact.
Wipe them clean with a dry cloth and then place the handheld vacuum cleaner in the stick unit.
When you place the handheld vacuum cleaner in the stick unit, move it slightly to the left and right a few times until you hear a click.
If the above solution(s) did not help to solve your problem, please contact Philips Consumer Care.