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For complete instructions on replacing or cleaning your furnace filter, humidifier pad or UV lamp, see the product
owner’s manuals. Contact your local contractor or visit www.honeywell.com/yourhome.
STEP 12. SET THE FAN AND SYSTEM SWITCHES
First set 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. The equipment
controls the fan operation.
Then set System
switch.
Heat: The thermostat controls your heating system.
Off: Both the heating and air conditioning systems are off.
Cool: The thermostat controls your air conditioning system.
F
an
On Aut
o
S
ystem
Heat Off Co
ol