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Temperature Scale Selection
■ The temperature scale can be selected by the C/F dip switch
inside the unit. Please refer to Figure 3 in the
Installation
Instructions
for identification of the correct switch.
■ If C/F switch is set at “F,” the temperature scale after reset is
Fahrenheit. If C/F switch is set at “C,” the temperature scale
after reset is Celsius.
■ Figure 3 shows the LCD right after reset. Fahrenheit scale is the
default.
Figure 3: Default Display after Reset and Initial Power-Up
Using your thermostat.
Default Mode
■ The LCD shows the time, day of week, room temperature,
operating program number or hold status, and the system and
fan status.
For the example at left:
■ The time is 2:05 PM Wednesday.
■ The room temperature is 73°F. If the Celsius scale is selected,
the
C
indicator will be displayed.
■ The current operating program is
DAY
. If the indicator is
flashing, temporary hold is active.
■ Icon explanation:
■ If heating is selected:
FLAME
icon will be displayed.
■ If a call for heating is made:
FLAME
icon will be flashing.
■ If cooling is selected:
SNOWFLAKE
icon will be displayed.
■ If a call for cooling is made:
SNOWFLAKE
icon will be
flashing.
■ If Auto-changeover is selected and system is in heating
mode:
■
AUTO
and
FLAME
icons will be displayed.
■ If heating is called while in
AUTO
mode:
FLAME
icon will
flash.
■ If Auto-changeover is selected and system is in cooling
mode:
■
AUTO
and
SNOWFLAKE
icons will be displayed.
■ If cooling is called while in
AUTO
mode:
SNOWFLAKE
icon
will flash.
■ All icons will be off if
OFF
is selected.
■ Fan is in
ON
mode.
Figure 4: Example Display
Figure 5: Example of Celsius Mode and Cooling System
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