White Rodgers 90 User Manual

Page 16

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

Programmable Fan Control.

This feature allows you to have your
fan operate continuously through one
or more programmed time periods.
This is useful if you want to have
constant air circulation during a
specific time period. If you do not use
this feature, the fan will cycle normally
with the heating and cooling system.

To program the fan, follow the steps in
the PROGRAMMING section. In each
time period, you can press the FAN
key to select a continuous fan or a
normally cycling fan. The display will
show

PRG FAN ON

when continuous

fan is selected. This means at the time
you set the period to start, the fan will
come on and run until the next
program time period

Example: Your thermostat is pro-
grammed with the original factory
settings for the Monday OCCU period
in the heating mode.

Pressing PROGRAM

VIEW

will

display

OCCU, 8AM, 70

and

PRG

FAN ON

. Pressing the FAN key will

toggle the programmable fan off and a
second press would turn it back on.
When

PRG FAN ON

is in the upper

right of the display, your thermostat is
programmed to adjust the temperature
to 70

at 8AM and also bring the fan

on to run constantly until the next
program time period.

At the next time period you may
choose to continue the program fan
feature. Change to the next program
period and press the FAN key until

PRG FAN ON

is on the display. The

fan will continue to run through this
period as well as the previous one.

If the thermostat is in a period with
continuous fan and you want the fan to
cycle, press the FAN key.

PRG FAN

on the display will turn off.

Air Filter Change-Out Indicator.

This feature allows the thermostat to
display

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 operation. 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 FILTER
key. This resets the timer and starts
counting the hours until the next filter
change.