Friedrich Thru-the-Wall Serie Guide D'installation Et D'utilisation page 7

The controls will look like one of the following:
Controls – Cooling & Heating
The compressor will turn on and off to keep the room at the set temperature.
In the heating operation, the electric heater will turn on and off to keep the room at the set temperature.
CAUTION
When the air conditioner has been operated in
the cooling or heating mode and is turned off or
set to the fan position, wait at least 3 minutes
before resetting to the cooling operation again.
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Off - Turns the air conditioner off.
Fan Only - The low fan speed operation without cooling/heating.
Low Cool - Cooling with the low speed fan operation.
High Cool - Cooling with the high speed fan operation.
Low Heat - Heating with the low speed fan operation.
High Heat - Heating with the high speed fan operation.
Turn the Temperature Knob to the desired setting. The central position
is a normal setting for average conditions. You can change this setting,
if necessary, in accordance with your temperature preference.
The thermostat automatically controls cooling or heating, but the fan
runs continuously whenever the air conditioner is in operation. If the
room is too warm, turn the thermostat control clockwise. If the room is
too cool, turn the thermostat control counterclockwise.
A slight burning odor may come from the
unit when first switching to HEAT after the
cooling season is over. This odor, caused
by fine dust particles on the heater, will
disappear quickly. This is normal operation.
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