FAN OPTION SWITCH
Read the following information before setting the fan option switch (See figure 1). If you are
unsure of your application, contact a qualified service person.
This thermostat is configured from the factory to energize the fan on a call for heat. If your
system is an electric heat or heat pump that REQUIRES the thermostat to turn on the fan on
a call for heat, place the fan option switch in the
ELEC
position. If your system does not
require the thermostat to energize the fan on a call for heat such as fossil fuel (gas, oil, etc.),
forced air system as well as hydraulic heating systems, place the fan option switch in the
GAS
position.
BATTERY OPERATION
The thermostat will operate from 2 size “AAA” alkaline batteries or 24VAC power. When
operated from batteries, connection to the “C” (common) or (neutral) terminal is not required.
NOTE: When operated from batteries only, the LCD display backlight will be lighted less
than 5 seconds after each button pressed ,when backlight option are set to 2) or 3).
Wiring Diagrams
Figure 3, Typical wiring diagram for heat/cool,
5 wire two transformer system.
-4-
THERMOSTAT OPERATION
1.
Setting the thermostat
This thermostat is very easy to operate. Set the
SYSTEM
switch to
either
HEAT
or
COOL
, then press the
▲
or
▼
buttons until the temperature you
want to maintain is shown on the right side of the display. If you want to turn the
system off, just move the
SYSTEM
switch to the
OFF
position and the
FAN
switch
to the
AUTO
position.
2.
Set current day and time
Move the system switch to COOL or HEAT. Press the
button
momentarily. The hours display will begin to blink.
Press
the
▲
or
▼
buttons until you reach the correct hour and AM/PM
designation. (AM begins at mid-night, and PM begins at noon).
Press
the
button again. The minutes display will begin to blink.
Press
the
▲
or
▼
buttons until you reach the correct minutes.
Press
the
button again. The day of the week will begin to blink.
Press
the
▲
or
▼
buttons until you reach the correct day of the week.
Press
the
button again. The display will now indicate the correct
time and day of the week.
3.
Filter timer
a)
When in configuration the selections are in months, each month
selections are equal to 30 days.
b) To review the remaining days hold the
button for 3 second
c)
To reset the filter days - hold the
button for 3 second (to enter
the filter program) and then hold the
▲
and
▼
buttons. This resets the
timer and starts counting the days until the next filter change.
Troubleshooting-------------------------------------------------------------------------------------
If a voltage spike or static discharge blanks out the display or causes erratic
thermostat operation, you can reset the thermostat by pressing the reset button
(See Figure 1). If the thermostat has power, and has been reset and still does not
function correctly, contact your heating/cooling service contractor
-9-
950-0078-revI November 21, 2008
