4
CHECK THERMOSTAT OPERATION
NOTE: To prevent static discharge problems, touch side
of thermostat to release static build-up before touching
any keys.
If at any time during testing your system does not operate properly,
contact a qualifi ed service person.
FAN OPERATION
If your system
does not
have a
G
terminal connection, skip to
Heating System
.
1. Turn on power to the system.
2. Move fan switch to
ON
position. The blower should begin to operate.
3. Move fan switch to
AUTO
position. The blower should stop immediately.
Do not allow the compressor to run unless the compressor
oil heaters have been operational for 6 hours and the
system has not been operational for at least 5 minutes.
CAUTION
HEATING SYSTEM
1. Move SYSTEM switch to
HEAT
position. If the auxiliary heating
system has a standing pilot, be sure to light it.
2. Press
to adjust thermostat setting to 1° above room
temperature. The heat pump system should begin to operate.
However, if the
Flame icon
( ) and
Snowfl ake icon
(
)
are fl ashing, the compressor lockout feature is operating
(see Confi guration menu, item 2.)
3. Adjust temperature setting to 4° above room temperature. The
auxiliary heat system should begin to operate and the
Flame icon
( ) will be fl ashing.
4. Press
to adjust thermostat setting below room temperature.
The heating system should stop operating.
EMERGENCY SYSTEM
EMER bypasses the Heat Pump to use the heat source wired to
terminal E on the thermostat. EMER is typically used when compressor
operation is not desired, or you prefer back-up heat only.
1. Move SYSTEM switch to
EMER
position. EMER will fl ash on the display.
2. Press
to adjust thermostat setting above room temperature.
The Aux heating system will begin to operate. The
Flame icon
( )
will display fl ashing to indicate that the Aux system is operating.
3. Press
to adjust the thermostat below room temperature.
The Aux heating system should stop operating.
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate the
cooling system.
CAUTION
COOLING SYSTEM
1. Move SYSTEM switch to
COOL
position.
2. Press
to adjust thermostat setting below room temperature.
The blower should come on immediately on high speed, followed
by cold air circulation.
3. Press
to adjust temperature setting above room
temperature. The cooling system should stop operating.
THE THERMOSTAT BUTTONS AND SWITCHES
Before you begin programming your thermostat, you should be familiar
with its features and with the display and the location and operation of
the thermostat buttons (see
Figure 5
). Your thermostat consists of two
parts: the
thermostat cover
and the
base
. To remove the cover, gently
pull it straight out from the base. To replace the cover, line up the cover
with the base and press gently until the cover snaps onto the base.
1
(Up arrow) Raises temperature setting.
2
(Down arrow) Lowers temperature setting.
3
TIME button.
4
PRGM (program) button.
5
RUN (program) button.
6
HOLD button.
7
FAN switch (
ON, AUTO
).
8
SYSTEM switch (
COOL, OFF, HEAT, EMER
).
THE DISPLAY
9
Indicates day of the week.
10
Indicates a malfunction with the system.
11
Flame icon
( ) is displayed when the SYSTEM switch is in
the HEAT position.
Flame icon
( ) is displayed fl ashing when
2nd-stage heat (Aux or Emergency) is energized.
Snowfl ake
icon
(
) is displayed (non-fl ashing) when the SYSTEM switch
is in the COOL position.
Snowfl ake
and
Flame icons
are
displayed (fl ashing) if the thermostat is in lockout mode to
prevent the compressor from cycling too quickly.
12
EMER
is displayed fl ashing when the system switch is in
EMER position.
13
Alternately displays current time and temperature.
14
The word
HOLD
is displayed when the thermostat is in the
HOLD mode.
15
Displays currently programmed set temperature (this is blank
when SYSTEM switch is in the OFF position).
16
“BATT” is displayed when 2 “AAA” batteries are low and
should be replaced.
Do not set to OFF mode during periods when freezing
temperatures could occur.
CAUTION
