12
Chapter 4 – Using the Control Panel
Menu Key
The Menu key allows access to any one of eleven menus. Pressing the Menu key once allows access to the rst
menu function. Pressing the Menu key twice allows access to the second menu function, and so on. If no key is
pressed for 15 seconds in a menu window, the display will revert to the main display window. Tip: If you are in a
menu window and would like to remain in the window for more than 15 seconds, keep the pkey depressed.
Enter Key
The Enter key, if pressed for 3 seconds, allows the modication of a setting. The enter mode is indicated by a
ashing cursor on the modiable setting. Pressing the Enter key again will save any entry and move the cursor to
the next modiable item in the display window. When the last modiable choice in a window is conrmed with the
Enter key, the enter mode is automatically terminated and the new settings are saved.
Filter Life LEDs: Whenever the system is on, the colour of the lter life LEDs (light emitting diodes) indicates the
state of the in di vidual lters in the system. Note: The positions of the lter life LEDs on the control panel correspond
to the actual positions of the lters within the system.
The lter life indicator LEDs signal four possible stages in the life of the lter:
1. Green: The lter is still within 80% of its estimated life span.
2. Orange: The lter is approaching the last 20% of its estimated life span.
3. Red: The lter has reached the end of its estimated life span.
4. Red blinking: The lter has passed its estimated life span and should be replaced immediately. The IQAir®
system’s effectiveness is likely to have been reduced dramatically, either due to a reduction in
airow (particle lters are clogged) or a reduction in lter efciency (gas phase lter is saturated).
Fan Speed LEDs: These LEDs simulate the fan speed through the frequency of their rotation. The faster the rotation
of the fan speed LEDs, the faster the actual fan speed of the unit.
4.2 Control Panel Locking Function
The control panel can be locked to avoid tampering with the
settings. To lock or unlock the control panel keys, the Menu and the
Enter key have to be pressed down simultaneously for 3 seconds.
The acti vated locking function is indicated with a star symbol in the
control panel display. The locking function is cancelled by disrupting
the power supply.
4.3 Fan Speed and Air Delivery
The IQAir® system can be set to run at six different fan speeds which correspond to six different airow rates. Speed
1 is the lower, speed 6 the highest fan speed. The higher the fan speed, the more room air will be ltered by the
system. The high fan speed settings provide additional air cleaning power to deal with situations of elevated
pollution levels. To allow better evaluation of the system’s performance at different fan speeds, the standard display
window shows not only the fan speed, but also the air delivery rate (airow). The displayed airow is factory preset
and is not measured by the system itself.
4.3.1 Regulating Fan Speed
1. When the IQAir® system is switched off (standby mode), the rst line of the
LCD display shows the model name. To switched the system on, press the
Power key on the far left of the control panel.
2. The LCD now displays the fan speed and the corresponding airow rate.
Note: The system starts at the fan speed at which it was running when it
was last used.
3. To change the fan speed, press the pkey.
