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Room Freeze Protection Function (RFP)
Room Freeze Protection function (RFP) is used in spaces that are unoccupied during the
winter, for the purpose of protecting any equipment or appliances which may be destroyed as
a result of freezing temperature.
ROOM FREEZE PROTECTION FUNCTION (RFP) OPERATION
When the RFP is selected, the unit will operate the fan at high speed for proper room
temperature monitoring. When the sensor detects that the room temperature has
dropped below 46 °F / 8 °C, the compressor/heat pump operation begins. When the room
temperature reaches 50 °F / 10 °C, the unit shuts off, then will repeat continuously if the
temperature drops below 46 °F / 8 °C again.
<Disclaimer>
This function may not be performed if the unit is not energized, or under a certain condition
that unit is unable to operate such as in protection mode. Please consult with the HVAC
installers or professional for details.
The Room Freeze Protection function (RFP) cannot be used unless the unit is energized and
set into the RFP mode. In the advent of a power failure this mode will not function. During the
RFP mode, POWERFUL OPERATION, QUIET OPERATION and FAN SPEED selection are
all disabled. Please consult with you HVAC installer or professional for more details.
Operating conditions
Use this air conditioner in the temperature range indicated in the table.
Temperature (°F/°C)
Indoor Outdoor
DBT WBT DBT WBT
COOL
Max. 89.6/32 73.4/23 114.8/46 78.8/26
Min. 60.8/16 51.8/11 0/-17.8 -/-
HEAT
Max. 86.0/30 -/- 75.2/24 64.4/18
Min. 60.8/16 -/- -15/-26 -16/-26.7
DBT: Dry bulb temperature, WBT: Wet bulb temperature
Power Supply
Models Number Time Delay Circuit Breaker Rated Volts
CS-XE9WKUAW / CU-XE9WKUA 15 Amps
208/230VCS-XE12WKUAW / CU-XE12WKUA 20 Amps
CS-XE15WKUAW / CU-XE15WKUA 25 Amps
To learn more...English
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ACXF55-27111_FC1219-1.indb 9
11/21/2019 2:56:52 PM
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