Control Panel Operation
Let’s check out how to control your air conditioner. On the control panel, just to the left of the POWER , is a liquid crystal display (LCD). All of the control panel function buttons and mode icons can be viewed in Figure 1.
Power On – Press the 
button to turn on the air conditioner. The power button will illuminate to indicate the power is on. The backlight on the power switch will automatically dim to 20% intensity after 120 seconds of inactivity. The remote control can also be used to turn power ON / OFF (See Remote Control).
Display – 
light. The back light has an automatic two (2) step dim function. After 120 seconds of inactivity, the display dims to 20% intensity. After an additional 120 seconds, the display switches off. Touching buttons will automatically bring the display to full brightness.
There are four control push buttons on each side of the display.
SYSTEM Button – Allows the user to sequentially select, 
Cool
, HEAT 
, and FAN ONLY 
operation. Press the 
button and the display advances to the next mode. A new icon appears. At the same time, the mode displays for two (2) seconds, then returns the display to the temperature set point for modes other than FAN. Note that on cool
only units, there are no HEAT 
and 
modes.
FAN MODE Button – Selects between automatic 
or 
operation. In the 
mode, the fan only turns on and off when the compressor operates or the heat function is enabled.
In the SYSTEM FAN ONLY Mode, 
is not available. In the 
mode, fans speed is determined by your selection on the 
button.
Figure 1
FAN SPEED Button – Used to sequentially select between fan speeds. Depending on your model, you can select between LOW, MED, HIGH, and MAX and AUTO. Max setting not available on SL and Kuhl+ models.
When the 
button is pressed, the fan speed is temporarily displayed in the display window, plus a fan speed icon (triangle) changes to indicate the new speed level. When auto is selected, fan speed automatically varies depending on the set temperature on the control panel and the actual room temperature. Let me explain. Say for example you’re working in your garage and you need to open the big door for several minutes. The air conditioner will sense a wide difference between the set temperature and the actual room temperature when this occurs the system fan speed increases to MAX. The fan speed decreases (in step) as the temperature difference decreases. When the set point temperature is reached the FAN speed returns to the original setting.
SCHEDULE Button – The 
button turns the schedule function on and off. The current day of the week is indicated as a dot underneath
the day symbol. Pressing the 
button a second time turns the schedule function off. The schedule function comes preprogrammed with recommended energy savings values (Addendum 1). The values may be changed through the schedule program function (See Programmable Thermostat).
UP and DOWN arrows – Pressing either 
(UP) or 
(DOWN) button changes the desired room temperature. The factory preset lower and upper limits are 63° F (16° C) and 99° F (37° C). These buttons are also used to navigate between function options when using the User Menu or Maintenance Mode.
BACK Button – This button is used after a menu item has been selected. It takes the user back to the previous menu level and to save and exit.
DISPLAY/ENTER Button – This button is used in conjunction with User Menu and Maintenance Mode operation to select items. This button may also be used to alternatively display the ROOM TEMPERATURE, OUTDOOR TEMPERATURE, and TIME. If the display is left inactive for 10 seconds it will reset to the TEMPERATURE SET POINT.
AUTO | COOL | HEAT |
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