Philips AC4074 manual Problem, Possible solution, English, The appliance doesn’t

Models: AC4074

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Problem

 

English 21

Problem

Possible solution

 

 

The appliance doesn’t

You ignored the filter replacement alerts.You did not replace the filter

work.

when the filter replacement light started flashing and did not respond when

 

the appliance started to beep every 30 minutes after approx. 2 weeks. As

 

a result, the appliance is now locked and you have to replace the filter and

 

reset the appliance (see chapter ‘Filter replacement’) so that the appliance

 

can operate again.

No air comes out of the air outlet

The appliance is not switched on. Put the plug in the wall socket and switch on the appliance.

The air quality is good and the auto mode is activated. In this case, the appliance switches off automatically when the air is clean to save electricity.

The fan speed does not change when the AUTO mode is activated.

The airflow that comes out of the air outlet is significantly weaker than before.

The air quality does not improve, even though the appliance has been operating for a long time.

The colour of the air quality light ring and the air quality light always stays the same.

I need cleaner air because I have an allergy.

The appliance is extra loud.

The appliance still indicates that I need to replace a filter, but I already did.

When the room becomes dark, the night mode is activated automatically when the appliance is in auto mode. In this case, the fan speed is set to a very low level. If you want to change the fan speed, press the FAN SPEED button one or more times to set the desired fan speed.

The pre-filter is dirty. Clean the pre-filter (see chapter ‘Cleaning’).

You haven’t removed all packaging material from the filters. Make sure that you have removed all packaging material.

One of the filters has not been placed in the appliance. Make sure that all filters are properly installed in the following order, starting with the innermost filter: 1) HEPA filter, 2) activated carbon filter, 3) formaldehyde filter (supplied with AC4074) or multi-care filter (supplied with AC4072), 4) pre-filter.

The air quality sensor is wet.The humidity level in your room is high and causes condensation. Make sure that the air quality sensor is clean and dry (see chapter ‘Cleaning’).

The room in which you run the appliance is larger than 55m², which is the maximum size at which this air cleaner can operate effectively.

The air quality sensor is dirty. Clean the air quality sensor (see chapter ‘Cleaning’).

There is not enough ventilation in the room. Open a window, to improve the air circulation.

You can change the air quality sensor sensitivity (see chapter ‘Using the appliance’) to make the air cleaner clean the air even better.

You haven’t removed all packaging material from the filters. Make sure that you have removed all packaging material.

Perhaps you did not press the filter reset button properly. Plug in the appliance, press and hold the on/off button and press the filter reset button with a flat tool.

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Philips AC4074 manual Problem, Possible solution, English, The appliance doesn’t