OPERATING YOUR THERMOSTAT
If at any time during testing your system does not operate
properly, contact a qualified service person.
Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
1. Turn on power to system.
2. Press FAN key to ON position. The blower should begin
to operate.
3. Press FAN key to AUTO position. The blower should
stop immediately.
To prevent static discharge problems, touch side of
thermostat to release static build-up before touching
any keys.
Check Thermostat Operation
Do not allow the compressor to run unless the com-
pressor oil heaters have been operational for 6 hours
and the system has not been operational for at least
5 minutes.
CAUTION
!
Heating
1. Press SYSTEM key to select HEAT. If the auxiliary heating
system has a standing pilot, be sure to light it.
2. Press to adjust thermostat setting to 1°
above the room
temperature. The heat pump system should begin to oper-
ate. The display should show "System On". However, if
the system configuration is set to HP1 or HP2 and setpoint
temperature display is flashing, the 5 minute compressor
lockout feature is operating (see Configuration menu, item
11).
3. Adjust temperature setting to 3° above room temperature.
If your system configuration is set at MS2, HP1 or HP2,
the auxiliary heat system should begin to operate and the
display will show "System On +2".
4. Press
to adjust the thermostat below room tempera-
ture. The heating system should stop operating.
Emergency Mode
Applies only to Heat Pump Systems
Emergency Heat (System EM Position) bypasses the Heat
Pump to use the heat source wired to terminal W/E, W2 on
the thermostat. EM is typically used when compressor opera-
tion is not desired, or you prefer back-up heat only.
1. Press SYSTEM key to select EM. “EM Heat Mode” will
flash on the display.
2. Press
to adjust thermostat setting above room tem-
perature. The Emergency heating system will begin to
operate. The display will show “System On” flashing “EM
Heat Mode” and “Heat” to indicate that the Emergency sys-
tem is operating.
3. Adjust temperature setting to 3° above room temperature.
Any additional stages of auxiliary heat should begin to
operate and the display will show "System On +2".
4. Press
to adjust the thermostat below room tempera-
ture. The heating system should stop operating.
Cooling
1. Press SYSTEM to select COOL.
2. Press to adjust the thermostat setting below room tem-
perature. The blower should come on immediately on high
speed, followed by cold air circulation. The display should
show "System On". If the setpoint temperature display is
flashing, the compressor lockout feature is operating (see
Configuration menu, item 5).
3. Adjust temperature setting to 3° below room temperature.
The second stage cooling should begin to operate and the
display should show "System On +2".
4. Press
to adjust the temperature setting above room
temperature. The cooling system should stop operating.
Choose the Fan Setting (Auto or On)
Fan Auto is the most commonly selected setting and runs the
fan only when the heating or cooling system is on.
Fan On selection runs the fan continuously for increased air
circulation or to allow additional air cleaning.
Choose the System Setting
(Cool, Off, Heat, Em, Auto)
Press the SYSTEM key to select:
Cool: Thermostat controls only the cooling system.
Off: Heating and Cooling systems are off.
Heat: Thermostat controls only the heating system.
Em: Setting is available only when the thermostat is config-
ured in HP1 or HP2 mode.
Auto: Auto Changeover is used in areas where both heating
and cooling may be required on the same day. AUTO allows
the thermostat to automatically select heating or cooling
depending on the indoor temperature and the selected heat
and cool temperatures. When using AUTO, be sure to set the
Cooling temperatures more than 1° Fahrenheit higher than
the heating temperature.
Manual Operation for
Non-Programmable Mode
Press the SYSTEM key to select Heat or Cool and use the
or to adjust the temperature to your desired setting.
After selecting your desired settings you can also press the
SYSTEM key to select AUTO to allow the thermostat to auto-
matically change between Heat and Cool.
Manual Operation (Bypassing the Program)
Programmable Mode
Manual operation will bypass the program and allow you to
adjust the temperature as you desire. The temperature you
set in Hold will be maintained indefinitely. Press
or to
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate
the cooling system.
CAUTION
!
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