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FAN AUTOHRS
CHECK BATTERY
F
AM
MON
FAN AUTO
HEATHEAT
HRS
CHECK BATTERY
F
AM
MON WEDTHU FRI SAT SUNTUEWEDTHU FRI SAT SUNTUE
18 18
19 20 21
22
25
2324
Figure 1. The Display
LARLAR
LARLAR
LAR
GE LIGHTED (LGE LIGHTED (L
GE LIGHTED (LGE LIGHTED (L
GE LIGHTED (L
CD) DISPLACD) DISPLA
CD) DISPLACD) DISPLA
CD) DISPLA
YY
YY
Y
The thermostat display alternately shows
the current time and the current tempera-
ture on the left side. The display also
shows the temperature you have pro-
grammed or set on the right side of your
screen.
18
Displays system mode (
HEAHEA
HEAHEA
HEA
TT
TT
T,
OFFOFF
OFFOFF
OFF,
COOLCOOL
COOLCOOL
COOL,
AA
AA
A
UTUT
UTUT
UT
OO
OO
O,
HOLDHOLD
HOLDHOLD
HOLD,
VV
VV
V
AA
AA
A
CA CA
CA CA
CA or
HUMDHUMD
HUMDHUMD
HUMD). During programming displays the
time period (
MOR,MOR,
MOR,MOR,
MOR,
D D
D D
D
AA
AA
A
YY
YY
Y
,,
,,
,
EVE, EVE,
EVE, EVE,
EVE,
NHT NHT
NHT NHT
NHT)
being programmed. In the configuration
menu, the menu item name is shown, one
word at a time (
PRPR
PRPR
PR
GMGM
GMGM
GM
MODEMODE
MODEMODE
MODE,
EMREMR
EMREMR
EMR,
COOLCOOL
COOLCOOL
COOL
FF
FF
F
AN AN
AN AN
AN
DELADELA
DELADELA
DELA
OFFOFF
OFFOFF
OFF, etc.).
19
CHECK BCHECK B
CHECK BCHECK B
CHECK B
AA
AA
A
TTERTTER
TTERTTER
TTER
YY
YY
Y appears when the
“AA” alkaline batteries are weak and
should be replaced.
BB
BB
B
AA
AA
A
TTERTTER
TTERTTER
TTER
YY
YY
Y appears
when the thermostat is running on battery
power only.
CHECK STCHECK ST
CHECK STCHECK ST
CHECK ST
AA
AA
A
T T
T T
T appears when
the thermostat detects certain problems
within itself.
CHECK SYCHECK SY
CHECK SYCHECK SY
CHECK SY
STEM STEM
STEM STEM
STEM appears
when the thermostat detects certain
problems in the heating or humidity
system.
20
Indicates the length of time remaining
in a temporary hold condition. Also
indicates the length of time remaining in
VACATION mode.
21
Displays
FF
FF
F
AN ONAN ON
AN ONAN ON
AN ON when the fan is
operating continuously. Displays
FF
FF
F
ANAN
ANAN
AN
AA
AA
A
UTUT
UTUT
UT
OO
OO
O when the fan cycles with the
heating or cooling system.
22
Displays the setpoint temperature. In
HUMD mode, shows humidity setpoint.
23
Alternately displays room temperature
and time of day. In HUMD mode, shows
actual humidity.
24
Shows the current day of the week.
When programming, shows the day(s)
being programmed.
25
The word
HEAHEA
HEAHEA
HEA
TT
TT
T or
COOLCOOL
COOLCOOL
COOL will appear
above or below the setpoint if area
18
is
needed to display other information.
Introduction