There may have been a power failure. It is normal for the lamp to flash after a power failure.
The appliance may not be suitable for the voltage to which it is connected. Make sure that the voltage indicated on the appliance corresponds to the local mains voltage.
In some cases, the lamp flashes when you set the light intensity to level 20. This flashing is caused by small disturbances in the electricity network. If the lamp flashes at light intensity level 20, reduce the intensity to level 19 or 18. If the lamp still flashes at these lower levels, please contact the Philips Consumer Care Center.
If the lamp does not work any more after flashing, please contact the Philips consumer care center in your country.