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system
off
cool
heat
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auto
refresh
on
reset
hold/rtrn
em
heat
sys
em
aux
lter
program
day/time
A
B
C
D
E
I
J
K
Switches and Buttons
Switches and Buttons
A LCD Readout - displays indoor temperature, set temperature, and information about the heat pump
system’s operation and status.
B System Switch-“emheat”istheEmergencyHeat.NOTE:TheEmergencyHeatModeisnotanenergy
saving mode, so use it only when necessary. “heat” is the normal heat mode. “off” turns the system off.
“cool” is the normal cooling mode.
C Fan Switch - In Auto mode, the fan runs when the system is on for heating or cooling. The Refresh mode
sets the fan to run automatically at intervals of 10, 15, 20, or 30 minutes out of every hour when the system
is not running for heating or cooling. In the On mode, the fan runs continuously regardless of system
status.
D Reset button - push the Reset button with the end of a paper clip to reset the thermostat and return to its
factory default settings.
E Hold/Return button - used for setting a permanent (vacation) hold, and for returning to the normal display
from Day & Time setting, Programming, or Option setting modes.
F Filter button - reviews and resets the thermostat’s Filter Life Counter.
G Day/Time button - used for entering the Clock Setting mode. Use with the Up and Down buttons to set
the time and day.
H Program button - used for entering and modifying programs. Use with the Up and Down buttons to
set times and temperatures. Press when in clock mode to select between 12-hour and 24-hour clock
modes.
I Down button - used to change the temperature setting and the option settings.
J Up button - used to change the temperature setting and the option settings.
K System LED’s - for heat pump systems that have fault detection capabilities, the “sys” LED glows red
when the thermostat has detected a fault through the L terminal connection from the heat pump. The “em”
LED glows red when Emergency Heat is turned on. The “aux” LED glows green when the auxiliary heat is
turned on.
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G
H