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17 69-1081—3
Usage Key
qPress once to display the hours and minutes that the heating or cooling system has been operating for the
current day.
qPress a second time to display the system operating time for the previous day (midnight to midnight).
qPress a third time to display the system operating time since the last time the usage function was cleared.
NOTE: Press for three seconds to clear the usage function.
STEP 10. SET THE FAN AND SYSTEM SWITCHESFirst 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. The equipment
controls the fan operation.
Then set the
system switch.
Heat: The thermostat controls your heating system.
Off: Both the heating and cooling systems are off.
Cool: The thermostat controls your cooling system.
Em Heat: Emergency heat or Auxiliary heat control to
setpoint. The heat pump compressor is off.
Usage
Usage
Usage
Usage
F
an
On Au
to
F
an
On Aut
o
S
ystem
Em Heat Heat Off Coo
l
S
ystem
Em Heat Heat Off Coo
l
S
ystem
Em Heat Heat Off Coo
l
S
ystem
Em Heat Heat Off Coo
l
69-1081.fm Page 17 Wednesday, May 18, 2005 9:03 AM