User Manual

7 User Manual
3
Operating Your Thermostat
Setting the SYSTEM Control Mode
The System Control has 4 modes of operation – COOL, OFF, HEAT, and EMER (1230 only). The mode can be
selected by moving the SYSTEM switch to the appropriate mode.
COOL Only your cooling system will operate.
OFF Heating and cooling systems are off.
HEAT Only your heating system will operate
EMER Operates a backup heat source (Emergency Heat) for
heat pump systems only (model 1230 only).
Setting the FAN Control Mode
The Fan Control has 2 modes of operation – AUTO and ON. The mode can be selected by moving the FAN
switch to the appropriate mode.
AUTO The system fan will run only when your heating or cooling system is running.
ON The system fan stays on.