
-7-
OPERATING YOUR THERMOSTAT
Press SYSTEM option
to your requirement
Press FAN option
to your requirement
Press DONE to save
and exit
Press CANCEL to
disregard current
setting and exit
During operation if the set point is changed this automatically puts the thermostat into a temporary
"RUN UNTIL" mode. The thermostat is locked into the heating or cooling mode it was in when the set
point was altered and will operate in only this mode (heat or cool) and cycle the output per the
temperature demand with this temporary set point until the "RUN UNTIL" time expires (which is
easily altered with the time adjust buttons. The screen will display the system is operating in this
temporary mode. To return to the program schedule, press the "RUN SCHED" button.
Choose the Fan Setting (Auto or On)
Fan set to “Auto” causes the fan to turn on only when heating or cooling is on (andthe thermostat is
running in the “RETURN” time period).The fan, heating & cooling remain off during the “LEAVE” time
period. This is the typical selection for domestic applications.
Fan set to “On” causes the fan to run continuously during the “RETURN” time period as required to meet
ventilation standards in commercial applications. The fan, heating & cooling remain off during the
“LEAVE” period.
Tochoose the System mode Setting (Auto, Cool, Off, Heat, Emer)
Press the SYSTEM button to select:
Auto: Auto Changeover is used in areas where both heating and cooling may be required on the same day
Cool: Thermostat controls only the cooling system
Off: thermostat outputs are held permanently off
Heat: Thermostat controls only the heating system
Emer: Emergency heat is available only when the thermostat is configured in HP1 or HP2 mode.
When SYSTEM button set to AUTO, the thermostat automatically selects heating or cooling depending
on the indoor temperature. Heat and cool turn on points operate with a factory set minimum gap of 2
degrees (configuration menu item 5) to stop the system jumping from one mode to the other. The auto
change over in operation requires the measured temperature to be at least 2 degrees closer to the other
mode turn on point for at least 5 minutes before mode change over can occur. .
TEMPORARY SETPOINT CHANGE OR & "RUN UNTIL"AFTER HOURS MODE