during the spring to set time forward one hour. DST is displayed when operating on daylight savings
Pressing the Daylight Time key more than once in a five minute period scrolls you through various time
option. For example, one hour earlier or later, with or without DST. Pressing Daylight Time six times in a five
minute period returns you to your original setting.
STEP 11. SET THE FAN AND SYSTEM KEY
Set the Fan Key
Fan On: The fan runs continuously. Use for improved air circulation or more efficient central air cleaning. (In a heat
only system, the fan runs continuously only if the fan relay is connected to the G thermostat terminal).
until display shows On.
Fan Auto: Normal setting for most homes. The equipment controls the fan operation.
until display shows Auto.
If you set the fan to On during normal operation, the fan reverts to the programmed fan setting when the
next program period begins.
Set the System Key
Heat: The thermostat controls your heating system.
until display shows Heat.
Off: Both the heating and air conditioning systems are off.
until the display shows Off.
Cool: The thermostat controls your air conditioning system.
until the display shows Cool.