Philips WP3821 User Manual

Problem

Solution

Perhaps the battery compartment cover is not 

properly fitted. Reattach the battery compartment 

cover in the correct way (see section ‘Inserting the 

battery’ in chapter ‘Preparing for use’).
Perhaps the water purifier is set to the unfiltered 

spray setting or the unfiltered stream setting. In 

these cases, the display is off. The display only works 

when the water purifier is set to the filtered spray 

setting.

The 

display suddenly 

goes empty.

Perhaps the battery is low. Replace the battery.

Perhaps the filter cartridge is clogged and water flow 

is extremely slow. Replace the filter cartridge.

The appliance 

makes a clicking 

sound when I 

use it at the 

filtered spray 

setting.

The clicking sound comes from the built-in flow 

meter and is normal.

Product name and type 

number

Pure water on tap WP3821

Type

Direct tap mount

Major filter components Polysulphone hollow-fibre membrane and 

granular activated carbon

Initial water flow rate

2L/min. (water pressure at 1kgf/cm², water 

temperature at 20°C)

20