Comfort Stat CP1717, Owner'S Manual, Page: 2 / 8

heat off cool
system
on auto
fan
OPERATION
Start­up
The LCD will show the factory default display of 70˚F (21˚C) when batteries are first installed,. The temperature will update
after a few seconds.
System Selector Switch
The System Selector switch on the front of the thermostat determines the operating mode of the thermostat. You may select COOL, OFF, HEAT.
NOTE: Anytime you install or remove the thermostat from the wallplate, slide the System Selector to the OFF position to prevent the possibility of a
rapid system On – OFF.
Fan Switch
The Fan switch should normally be located in the AUTO position. The Fan will be turned on along with normal operation of your system. In a normal
gas or oil furnace, the Fan will be turned on by your furnace after its warm­up delay. For electric heat, air conditioning, and heat pump operation, the
Fan will turn on with the system.
To run the Fan on continuously, slide the Fan switch to the ON position.
Review Current Set Temperature
Ÿ Press either the up or down key once to see the Set Temperature.
The factory default is 68˚F (20˚C) when started with the System Switch Off or Heat, and 78˚F (26˚C) when started with the System Switch on Cool.
Setting New Temperature
Ÿ
Press either the up or down once and display the set temperature.
Ÿ Press either up or down again to change to your desired Set Temperature. Hold the key down for over 2 seconds to fast advance
the Set Temperature.
The display will return to the normal room temperature after the keys have been released for 5 seconds.
Filter Monitor
The thermostat counts the number of hours your system’s filter has been in use. To maximize your system’s performance and
energy efficiency, change or clean your filter regularly. When the total system run time for heat and cool reaches 400 hours, the
Filter Change Indicator will flash as a reminder to check your system’s filter.
After changing or cleaning the system filter, press and hold the Filter key for 3 seconds. The display will blink, and the counter will
be reset to zero.
Note: Pressing the Filter key at any time for less than 3 seconds will cause the Filter Change Indicator to appear on the LCD. This is only to confirm key operation, and
the counter is not affected unless the key is held for greater than 3 seconds.
SPAN Setting
Your thermostat is set at the factory to cycle at 2˚F (1˚C) above and below the set temperature. (Span = 2) This setting has been designed to provide a comfortable
room temperature under most all conditions. However, if you find your system cycling too fast or too slow, then the Span can be adjusted to modify the cycle time.
Ÿ
Press and hold BOTH up and down keys for three seconds. SPAN will be displayed on the LCD.
Ÿ
Press up to raise the Span to 3. This setting INCREASES to cycle time by allowing your system to run LONGER.
Ÿ Press down to lower the Span to 1. This setting DECREASES the cycle time by causing your system to run SHORTER.
The Span settings remain the same for both HEAT and COOL, and can be changed in any System Switch position.
CO O L O F F HE AT O N AU TO
SYST EM FA N
Filter Change
Indicator:Flashes
when filter needs
to be checked.
LCD Display:
Shows Room
Temperature,Set
Temperature,and
other feature
information as
required.
Light:Backlight
display
automatically
with each key
press for easy
viewing. Low Battery
Indicator:
Flashes when
batteries need
to be replaced.
Front Door:
Battery cover
Open with one
finger from top.
System
Switch:
Selector
switch for
Heat,Cool,
and Off.
Fan Switch:
Fan switch
for Automatic
or Continuous
fan operation.
Filter Key:
Resets the
filter change
counter to zero.
Up and Down Keys:
Keys for changing
the Temperature
setting. Also used
for adjusting the
Span.
Battery
Compartment:
Front access allows
easy insertion of
two AA 1.5V
batteries.
Front Door:
Cover keys Open with
one finger from left or right.