Friedrich FPHMR18A3A Service Manual page 42

Air flow direction (Louvers) control
The louver is operated by a stepper motor and operates the horizontal swing of the louver automatically. Press the SWING
button to start or stop the louver swing.
During the louver swing in normal operation, the current position will be stored. When the appliance turn off and louver swing
automatically to the default position, it will position at the close position plus 5º.
The horizontal louver is controlled by a step motor, press the SWING button to swing or stop the louver.
During the louver run in normal operation, the current position will be stored. When the appliance turn off and louver swing
automatically to the default position, it will position at the default position plus 5º.
Reversing (4-Way) Valve
The Reversing Valve is energized in heating. When a cooling demand is given while in heating, the 4-way valve is interrupted
immediately.
Heating Operation Temperature Compensation:
The temperature compensation is 5ºF in heating mode. For example, if the set temperature is 77°F by the remote control,
when the room temperature is detected with 88°F, the compressor will turn off.
The compensation is available only if the room temperature sensor of indoor unit is used. To cancel, use the I-Feel function
on the remote controller.
Indoor fan motor operation
When in heating mode condition, the indoor fan motor operation is shown as following to prevent the cold air from coming out
during the appliance operation when less than XX(degree)/F.30(degree)C.
When the setpoint temperature and the room temperature is between 3.6ºF and 7.2ºF, the indoor fan speed will keep its
current speed.
Air flow direction control
Outdoor fan
The outdoor fan speed in except single speed motor models can be changed according to outdoor ambient temperatures.
Turbo Function
In cooling mode, when you press the Turbo button on the remote control, the unit will operate for 15 minutes with the
following setting:
a. The set temperature is 61ºF(16°C);
b. The indoor fan speed is set to highest speed;
c. The compressor runs with high frequency.
42
OPERATION
95ºF
86°F
77°F