17
EN
Control Parameters
9 .1 Understanding the General
Settings
This section describes the options available in general
settings. To locate the general settings screen, select
main menu > control parameters > general settings.
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General Settings Screen 1
1 High Fan Speed .
Sets an upper fan-speed limit from
35 to 95. A higher number increases the fan speed
and a lower number slows the fan speed.
2 Medium Fan Speed .
Sets an upper fan-speed limit
from 32 to 85. A higher number increases the fan
speed and a lower number slows the fan speed.
3 Low Fan Speed .
Sets a lower fan-speed limit
ranging from 30 to 75. Set a higher number to
increase or a lower number to slow the fan speed.
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General Settings Screen 2
4 Inside Temp Calibration .
Calibrates the ambient
sensor within a range of ±50 °F (± 10 °C). Adjust this
parameter to display the correct room temperature.
I
The setting increments are in °F even when the
control is set to display °C.
5 Temperature Units (°F/°C/Auto) .
Changes the
temperature units from the default F to C. Celsius
readings display in tenths (for example 2.2°). Auto
corresponds to “automatic by line frequency”, where
60 Hz automatically sets the unit to Fahrenheit (F),
and 50 Hz automatically sets the unit to Celsius (C).
6 Reversed Fan Spd in Heat .
Improves heat output
in cooler climates. Automatic fan speeds during
heating automatically reverse the fan speed during
heat mode. The fan speeds up as the set point is
approached. The fan switches to low speed when the
set point is satisfied and the compressor cycles off.
Lowering the fan speed when the cabin is cold
increases the head pressure and helps raise the
supply temperature. Increasing the fan speed as the
set point is approached also reduces unnecessary
high-pressure faults. The fan can be programmed to
operate the same as in cooling by selecting the Off
option, which represents normal fan operation during
reverse-cycle heating.
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General Settings Screen 3
7 Auxiliary Heat Option .
Allows optional heat,
based on the system (DX or CW). Set to On to enable
reverse-cycle and auxiliary electric heat. Set to Off for
reverse-cycle heat only.
–
For DX Applications .
Allows an optional
auxiliary (aux) electric heater to operate, if
installed.
• If no auxiliary electric heater is installed, select
Off.
Summary of Contents for MCS-CTRL
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