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D. Heat Strip Mode (Select Models)
In Heat Strip Mode, the system cycles the heat strip On and Off based on room air temperature
and temperature set-point on the CT thermostat. There are three fan speeds in Heat Strip Mode:
● “Low”: Fan operates continuously at low speed. Heat strip cycles On and Off.
● “High”: Fan operates continuously at high speed. Heat strip cycles On and Off.
● “Auto”: Fan operates in low speed and will cycle On and Off with the CT thermostat.
SPECIAL FEATURES
A. Capacitive Touch Interface
The capacitive touch interface provides a clean, modern user interface.
Capacitive touch interface requires skin contact to function, therefore it will NOT work
through gloves, bandages, etc.
Moisture, including wet ngers, on the capacitive touch interface can cause sensors to
become unresponsive until the water evaporates.
B. Compressor Time Delay
A time delay of approximately 2 minutes occurs anytime the compressor is required to begin cool-
ing or heat pump cycle.
C. Defrost Cycle
During heat pump operation, if the outside coil begins to freeze up, a defrost cycle is initiated
that temporarily puts the heat pump back into air conditioning mode. This reverses the refrigerant
ow and melts ice forming on the outside coil. Typically this occurs when outside temperatures
are below 42 ºF (5.5 °C) and repeats every 25 minutes of compressor run time. During this cycle
the unit will cease to provide hot air ow temporarily. This is normal and is NOT and indication of
malfunction.
Defrost cycling SHALL continue until measured temperature of the outside sensor is
< 30 ºF (-1 °C) or > 42 ºF (5.5 °C).
D. Low Ambient Heat Pump Lock Out
All heat pumps are constrained to operation at a temperature range determined by outside condi-
tions. Since all heat pumps lose efciency at low outside ambient temperatures, the heat pump
has a lock out feature that prevents Heat Pump Mode of operation when temperatures fall below
30 ºF (-1 °C). If system is set in Auto Mode fan will be turned off. The fan will remain on if the fan
setting is set to Low or High. However, the compressor will not run and there will be no heat func-
tion below 30 ºF (-1 °C).
MODE DESCRIPTION
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