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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.
CAUTION
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.
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.
CAUTION
Do not set to OFF mode during periods when freezing
temperatures could occur.
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.
4
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate the
cooling system.
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 using 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 FAN switch (ON, AUTO).
)
4 SYSTEM switch (COOL, OFF, HEAT, EMER).
THE DISPLAY
5 Indicates a malfunction with the system.
6 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.
7 EMER is displayed fl ashing when the system switch is in
EMER position.
8 Displays current temperature.
9 Displays currently programmed set temperature (this is blank
when SYSTEM switch is in the OFF position).
10 "BATT" is displayed when 2 "AAA" batteries are low and
should be replaced.
CAUTION
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