Crestron electronic CHV-TSTATRF - Manual (Page 28)

infiNET™ Thermostat Crestron CHV-TSTATRF
Operation
System Mode
The MODE button on the CHV-TSTATRF will cycle the unit through all available
system modes in the following order: Off, Heat, Emergency Heat (for heat pump and
dual-fuel systems), Cool and Auto (if enabled in Setup).
The system mode will change upon release of the MODE button and the selected
mode will become operational three seconds after the mode has been entered.
Off Mode
In Off mode, all HVAC systems are disabled.
Heat Mode
In Heat mode, the thermostat uses the heating system to maintain the setpoint
temperature.
Emergency Heat Mode
In Emergency Heat mode, the thermostat uses only the auxiliary heat output on heat
pump or dual-fuel systems to maintain the setpoint temperature.
NOTE: Emergency Heat mode can only be accessed when heat/cool type has been
set to “Heat pump” or “Dual-Fuel Heat pump”. This setting can be useful when the
heat pump is being serviced or when there is an unexpected problem with it. The
display will flash the “flame” icon when the system is in Emergency Heat mode.
Cool Mode
In Cool mode, the thermostat uses the cooling system to maintain the setpoint
temperature.
Auto Mode
NOTE: Auto mode support requires firmware version 1.005.0005 or later.
In Auto mode, the thermostat allows the system to switch between Heat and Cool
automatically as needed to maintain the setpoint temperature. By default, the
CHV-TSTATRF has been configured with Auto mode disabled, meaning it is not
available from the thermostat itself or via another interface such as a touchpanel.
In order to enable Auto mode, you must enter Setup mode and change the “AU”
setting from “--” to either “d” (dual setpoint) or “S” (single setpoint). Refer to “Setup
Mode” which starts on page 19 for details.
Once Auto mode has been enabled, you can access it from the CHV-TSTATRF
controls as follows:
1. Press the MODE button until both the flame and snowflake icons
appear in the display. This indicates Auto mode is now active.
24 • infiNET™ Thermostat: CHV-TSTATRF Operations & Installation Guide – DOC. 6490A