Philips HU 4901 [17/96] Troubleshooting

8 Troubleshooting

This chapter summarizes the most common problems you could encounter with the humidier. If you

are unable to solve the problem with the information below, contact the Consumer Care Center in

your country.

Problem Possible solution

The humidier does not

work.

• Make sure that there is power supply to the humidier.

• Make sure that the water tank is lled with water and placed

properly onto the humidier.

There is no air

humidication.

• Make sure that the water tank is lled with water and placed

properly into the humidier.

• Your room might have too much ventilation. Please close doors

and windows.

• Your room size is too big. The recommended room size is 40m²

for HU4901.

The water tank leaks. • Make sure that the humidier is not overlled with water.

• Make sure that the humidier is well assembled/connected every

time after you clean it or after you remove the upper cover and/

or water tank for relling.

• Make sure that water tank is placed properly. If the problem

persists, contact the Consumer Care Center in your country.

There are some

white deposits on the

humidication lter.

The white deposits are called scale and they consist of minerals from

the water. Scale on the humidication lter affects the humidifying

performance, however it does not harm your health. Please follow the

cleaning instructions in the user manual.

The lter turns yellowish

after some time.

The yellow deposits is a natural effect of the wick material, and it has

no impact on humidication performance. Clean the humidication

lter frequently to remove the scale, and replace the humidication

lter every three month.

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