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Fan
On Auto
Fan
On Auto
System
Heat Off Cool
System
Heat Off Cool
System
Heat Off Cool
STEP 11. SETTING THE FAN AND SYSTEM SWITCHES
First set the fan switch.
Fan On: The fan runs continuously. Use for
improved air circulation or for more efficient
central air cleaning. (In a heat-only system,
fan runs continuously only if fan relay is
connected to the G thermostat terminal.)
Fan Auto: Normal setting for most homes.
A single-speed fan turns on automatically
with the air conditioner or furnace. A two-
speed fan usually runs on high with the air
conditioner and on low with the furnace.
Then set the system switch. The
display will show which
Heat: The thermostat controls
your heating system.
system is on: flame = heat
and snowflake = cool.
Off: Both the heating and air
conditioning systems are off.
Cool: The thermostat controls
your air conditioning system.
