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General Information
2 .5 Controls Description
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3 Q3 Control
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1
Data Display – Large LED readout displays
current temperature, set point, programmed
values, and error messages.
2
Auto Fan Mode Indicator – Lit when fan is
running in Automatic Fan Mode.
3
Fan Speed Indicators – Column of three LEDs
that indicate the current fan speed of high,
medium, or low (refer to fan speed operation).
4
Fan Button – Press to select Automatic or
Manual Fan Mode, indicated by the Auto Fan LED
indicator being On or Off. In Manual Fan Mode,
additional presses of the Fan button will adjust the
fan speed higher, then lower, then back to Auto.
In Auto Fan Mode, the fan speed is controlled by
the control board as a function of the difference
between set point and inside temperature. Refer
to "Programmable Functions, Ranges, and Factory
Defaults" on page 18.
5
Up Button – Press to adjust the set point up. In
programming mode, press to scroll through the
program modes and adjust the values.
6
Down Button – Press to adjust the set point
down. In programming mode, press to scroll
through the program modes and adjust the
values.
7
Mode Button – Press to cycle through the modes
of operation. Mode sequence selections are Off,
Cool, Heat, Auto, and Dehumidify.
8
Dehumidify Mode Indicator – Lights when the
Dehumidify Mode is selected.
6
OFF
COOL
HEAT
AUTO
DEHUMIDIFY
MODE
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Description
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AUTO
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Ref .
9
Auto Mode Indicator – Illuminates when Auto Mode is
selected. Flashes if the optional Aux Heater is enabled.
Refer to "Programmable Functions, Ranges, and Factory
Defaults" on page 18.
10
Heat/Aux Heat Mode Indicator – The Heat Mode
light flashes continuously when on Auxiliary Mode (Heat
Mode utilizes electric heat for this application).
11
Cool Mode Indicator – Lights when Cool Mode is
selected or indicates the compressor is on when cooling
in Auto mode.
12
Off Mode Indicator – Lights when the system is off.
Note that the Data Display remains on. You can continue
to adjust the set point, display readings, and activate the
manual fan to circulate the air while the system is in Off
Mode.
13
Cooling Indicator – A dot in the upper left corner of
the data display lights to indicate the compressor is
running in Cool mode. In Auto mode, the Cool LED
indicator lights to indicate the compressor is running.
14
Heating Indicator – A dot in the upper left corner
of the data display lights to indicate the electric heat
is running in Heat mode. In Auto mode, the Heat LED
indicator lights to indicate the electric heat is running.
15
Set Point Indicator – A dot in the upper center of the
display lights to indicate the set point is being adjusted.
Normally the display defaults to inside temperature.
16
Manual Fan Mode Indicator – A dot in the upper
center of the display lights to indicate the manual fan
mode is selected. Note: the Auto Fan Mode indicator
(2) turns off when the fan is running in Manual Fan Mode.
Universal Air Conditioning Unit
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Description
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Troubleshooting
