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Features
CompressorCompressor
CompressorCompressor
Compressor
ShorShor
ShorShor
Shor
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t-Cy
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Your thermostat can be configured to
protect your system against premature
compressor failure by “locking out”
the compressor. This ensures that the
compressor will stay off for at least
five minutes on each cycle. When the
thermostat is in compressor lock-out,
the word COOL will flash. During this
period, the compressor will not be
energized. See installation and
configuration, page 18, step 6.
Air FilterAir Filter
Air FilterAir Filter
Air Filter
ChangChang
ChangChang
Chang
e-Out Indicae-Out Indica
e-Out Indicae-Out Indica
e-Out Indica
tortor
tortor
tor
..
..
.
This feature allows the thermostat to
display the words CHNG FLTR
(change filter) after a set time of fan
operation. This is a reminder to change
or clean your air filter. The factory set
interval for CHNG FLTR to be
displayed is 200 hours of fan opera-
tion. This can be set anywhere from 0
to 1950 hours in 25 hour increments. A
selection of 00 will cancel this
feature.
When CHNG FLTR is displayed, you
can clear it by pressing the HUM/
FLTR SERVICE button. This resets
the timer and starts counting the hours
until the next filter change.
The following steps will allow you to
change the number of hours for filter
change-out.
1. If you see CHNG FLTR on the
display, press the HUM/FLTR
SERVICE button once to reset the
timer. If you do not see CHNG FLTR
proceed to step 2.
On a 7–Day thermostat, when the
HUM/FLTR SERVICE button is
pressed twice, the display will show
the number of hours remaining before
CHNG FLTR indicator will display.
2. Press the HUM/FLTR SERVICE
button. The display will show SET
FILTER TIME and will show the
number of hours to filter change.
3. Press TIME
FWD
or TIME
BACK
to change the time to your require-
ments.
4. Press PROGRAM
RUN
to return
to the normal operating mode.
NOTE: If unsure what interval to use
between filter changes or cleaning,
contact the manufacturer of your
heating/cooling equipment.
System andSystem and
System andSystem and
System and
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T
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mostamosta
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mosta
t Diat Dia
t Diat Dia
t Dia
gnosticsgnostics
gnosticsgnostics
gnostics
..
..
.
The display will indicate CHECK
SYSTEM if the room temperature
does not rise within two hours of the
call for heat. After two hours the
thermostat will quit calling for heat for
one minute (this allows some furnaces
to reset) and call for heat again. It will