10
The Thermostat Buttons
Sets the system mode (HEATing,
EMERgency backup, OFF, COOLing, or
AUTOmatic changeover).
Selects fan operation (see #6, above). This
button is also used to program the fan to run
continuously during a program period.
Runs display forward or backward through
time, day, or anticipation settings during
programming.
Used with the
TIME
FWD
and
TIME
BACK
buttons to set
current time and day of the week.
Used during programming to set the day of
the week.
Used to initiate or review thermostat pro-
gramming.
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7
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10
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12
Used to start program operation after pro-
gramming. Also used to return thermostat
to program operation after being in HOLD
mode.
Used to manually override programming to
hold at a selected temperature (when HOLD
is displayed).
Used to advance thermostat program to the
next program period (for example, from the
MOR program to the DAY program).
(Red arrow) Raises temperature setting
(99°F or 37°C maximum).
(Blue arrow) Lowers temperature setting
(40°F or 4°C minimum).
Red EM.HT. light indicates the system is in
the emergency mode (the heat pump
compressor is off and the auxiliary system
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