21). Troubleshooting This chapter summarises the most common problems you could encounter with the appliance. If you are unable to solve the problem with the information below, contact the Consumer Care Centre in your countr y. The selected function/ time mode doesn’t work. The appliance may be in standby mode or may be switched off. The appliance doesn’t work. There may be a connection problem. Check if the plug is inser ted in the wall socket properly. The appliance may not be switched on. AC4064/AC4054: press the function selection button. AC4062/AC4052: press the on/off button. The ESP par ticle filter or the front panel may not be placed properly. Reinser t the filters and reattach the front panel. The zeolite gas filter is not placed yet. Inser t the filter and reattach the front panel. If you have performed the above checks and the appliance still does not work, it may be malfunctioning. Unplug the appliance and take it to your Philips dealer or an authorised Philips ser vice centre. Problem Solution 12 English ProblemSolution The clean air doesn’t come smoothly out of the air outlet The odours are not removed properly. The dust par ticles are not removed properly. The fans do not work, even though the appliance is plugged in and switched on. The appliance produces an unusual noise (e.g. a hissing, sizzling or crackling noise) during operation. The pre-filter may be clogged. Clean the pre-filter (see chapter ‘Cleaning and maintenance’). Perhaps you forgot to remove the plastic wrapper of a new filter. Remove the plastic wrapper before you switch on the appliance again. The air inlet or outlet may be blocked by external objects. Remove the object that blocks the air inlet or outlet. Clean the filters and the corona par ticle charger (see chapter ‘Cleaning and maintenance’). If this does not help, unplug the appliance and take it to your Philips dealer or an authorised Philips ser vice centre. The zeolite gas filter may be dir ty or may have reached the end of its life. Clean the zeolite gas filter (see chapter ‘Cleaning and maintenance’) or replace it (see chapter ‘Filter replacement’). Perhaps you use the appliance in a room in which the ambient air quality is ver y poor. In that case, open windows to improve the air circulation. Perhaps you use the appliance in a room that is much bigger than the room size the appliance is intended for. Put the appliance in a smaller room. The recommended room size is 6m. up to 20m. for AC4054/ AC4052 and 6m. up to 40m. for AC4064/AC4062. The ESP par ticle filter may have reached the end of its life. Check the colour of the ESP par ticle filter (see chapter ‘Filter Replacement’). If necessar y, replace the filter. Perhaps you use the appliance in a room that is much bigger than the room size the appliance is intended for. Put the appliance in a smaller room. The recommended room size is 6m. up to 20m. for AC4054/ AC4052 and 6m. up to 40m. for AC4064/AC4062. The appliance may be malfunctioning. Switch off the appliance and unplug it.Take the appliance to your Philips dealer or an authorised Philips ser vice centre. The pre-filter may be clogged. Clean the pre-filter (see chapter ‘Cleaning and maintenance’). Perhaps you forgot to remove the plastic wrapper of a new filter. Remove the plastic wrapper before you switch on the appliance again. The air inlet or outlet may be blocked by external objects. Remove the object that blocks the air inlet or outlet. The appliance may be malfunctioning. Switch off the appliance and unplug it.Take the appliance to your Philips dealer or an authorised Philips ser vice centre. English 13 ProblemSolution The appliance produces a burning smell during operation The appliance gives off an unusual smell during operation. The corona par ticle charger is still dir ty after I have cleaned it with the soft cleaning brush. The appliance produces sparks during operation. Perhaps the mesh of the corona par ticle charger is not clean. Clean the corona par ticle charger (see chapter ‘Cleaning and maintenance’). The appliance may be malfunctioning. Switch off the appliance and unplug it. Take the appliance to your Philips dealer or an authorised Philips ser vice centre. In case of an unusual smell, contact an authorised Philips ser vice centre. This is not a problem. By brushing the top and bottom of the corona par ticle charger, you remove enough dir t to make it work properly again.Never touch the corona par ticle charger with your hands. Always clean the corona par ticle charger with the special soft cleaning brush, which is stored in the front panel. Be extra careful when you clean the corona par ticle charger : the wires are ver y fragile. Sometimes small sparks may be produced in the corona par ticle charger. This is quite normal and the result of moisture in the air. 14 .... ....14 .... .... ......,.......!................,...... .,... .................... ........ (AC4064/AC4062) .. ...... (AC4054/AC4052),..............