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System Operation
Touch the SYSTEM key to select the
thermostat operating mode desired.
When the system is calling for fi rst stage
heat or cool, “Low” will display on the
touchscreen. When second stage is
required, the display will show “High”.
The setpoint temperature can be
changed by touching the or keys.
Auxiliary Heating
Heat Pump Disable
This feature is applicable only in the heat pump mode. When this feature is
selected, the thermostat will switch to electric heat and shut off the compressor
when the outside temperature falls below the HP balance point. In the Thermostat
User Menu, use or to select the temperature which can be between 5 to
50°F.
Dual Fuel Disable
This feature is applicable only in the heat pump mode. When this feature is
selected, the thermostat will switch to fossil fuel heat and shut off the compressor
when the outside temperature falls below the DF balance point. In the Thermostat
User Menu, use or to select the temperature which can be between 5 to
50°F.
Air Handler Lockout Temperature
This feature is applicable only in heat pump mode with electric auxiliary heat.
When the outdoor temperature is above the Air Handler Lockout Temperature
balance point, the auxiliary heat stage(s) will be inhibited so the thermostat
setpoint will be maintained by only the heat pump. Factory default is OFF which
disables the feature. The Lockout Setpoint cannot be set at or below the Heat
Pump Disable (HP) balance point. In the Thermostat User Menu, use or
to select the temperature which can be between the Heat Pump Disable setting
value (HP) to 95°F.
Using the Thermostat
Each Equipment User Menu has submenus to divide the information into
categories. Each equipment has a different set of submenus, with different
parameters depending on the equipment. The submenus are showing similar
information for each equipment. The submenus and the information they provide
are:
• Status
Used to display or modify equipment
settings
• 2 Week History
(2 WK HIST)
Displays information on the number of
hours of unit/mode operation and the
number of cycles the unit has operated
in for the last two weeks.
• Life History
(LIFE HIST)
Displays information on the lifetime
number of hours of unit/mode
operation and the number of cycles the
unit has operated in.
• Fault History
(FAULT HIST)
Displays information on the last six
faults by code and description that
occurred throughout the system and
the number of days ago that the fault
occurred.
• Unit Info
On new system installations displays
the model number and serial number
of the selected unit.
If a control has been replaced the
equipment will be recognized but will
only show the unit model number.
• Setup
Used to display or modify equipment
settings
• Dipswitches
Displays current setting of dipswitches
on equipment.
“X” in the following tables indicate alpha or numeric character.
Advanced Installer Confi guration Menu