How to operate your Friedrich room air conditioner
(QuietMaster 'K' & Heavy Duty models / Twintemp models)
To start unit
If your air conditioner is installed and plugged into a properly grounded receptacle, it is ready to operate.
Mode control (QuietMaster ‘K’ and Heavy Duty)
The upper dial (Figure 5) allows you to select cooling at four different speeds, as well as Fan Only (Models SL28 and SL36 only have three cooling speeds.).
Off - to turn the unit off. High Cool - for quick cooling.
Medium Cool - to maintain a desired temperature. Low Cool - when cooling demand is low.
Sleep Setting - for nighttime use, or when cooling demand is low. Fan Only - to circulate air in the room without the compressor coming on.
The Fan Only setting can also be used with the Exhaust air setting to remove
Off | S P E E D |
Fan | Sleep |
Only | Setting |
High | Low |
Cool | Cool |
Medium |
|
Cool |
|
stale air or smoke from the room; or it can be used with the Fresh Air setting to bring outside air into the room. This is especially useful in the spring and fall when cooling may not be necessary. The Fresh Air and Exhaust controls are in the upper air discharge area. The center position of this control is the normal, or closed position, which recirculates air for maximum performance in the cooling mode (See Figure 9).
Mode control (Twintemp)
This dial allows you to select cooling or heating at three different speeds, as well as Fan Only (Figure 6).
Off - to turn the unit off.
High Cool or High Heat - for quick response.
Medium Cool or Medium Heat - to maintain a desired temperature. Low Cool or Low Heat - for nighttime use, or when demand is low. Fan Only - to circulate air in the room without the compressor coming on.
The Fan Only setting can also be used with the Exhaust air setting to remove stale air or smoke from the room, or it can be used with the Fresh Air setting to bring outside air into the room, especially in the spring and fall when cooling isn’t necessary.
The Fresh Air and Exhaust controls are in the upper air discharge area (see Figure 9, page 7). The center position of this control is the normal, or closed position, which recirculates air for maximum performance in the cooling mode.
NOTE: You may notice an odor when first activating the heat when the electric heat element comes on. This is due to dust burning off that may have gathered on the coil during the summer. This is normal.
Temperature control
Yes
MIN
Figure 5
Fan
Only 
Low
Heat
Med
Heat
High
Heat
No | Money Saver® |
MAX
Allow 3 min. between restarts
Off
Low
Cool
Med
Cool
High
Cool
The bottom dial on the control panel is the thermostat. Turn it clockwise for cooler temperature and counterclockwise for warmer.
Money Saver® switch
This rocker switch can be depressed to either Yes or No. In the Yes position you will get the most economical operation. Both the fan and compressor will cycle on and off together, maintaining the selected temperature at a more constant level and reducing the humidity more efficiently in the cooling mode. This control will only operate when the unit is in cooling or heating mode. In the No position, the fan will run constantly as long as the unit is in the cooling or heating mode.
NOTE: The YS09 is a 115 volt model and does not provide adequate heat below 37°F (3°C). This product is designed for warm climate applications.
Yes
MAX
HEAT
Figure 6
No | Money Saver® |
MAX
COOL
Allow 3 min. between restarts
6
