Emerson 1F97-391 User Manual

Page 37

Features

Compressor

Compressor
Shor

Shor

Short-Cy

t-Cy

t-Cyc

cle Pr

le Pr

le Protection.

otection.

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 Filter

Air Filter
Chang

Chang

Change-Out Indica

e-Out Indica

e-Out Indicator

tor

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

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 and

System and
T

Ther

her

hermosta

mosta

mostat Dia

t Dia

t Diagnostics

gnostics

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