OPERATING YOUR THERMOSTAT
Check Thermostat Operation
NOTE
To prevent static discharge problems, touch side of thermostat to release static
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 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.
!CAUTION
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.
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 confi guration is set to HP1 or HP2 and setpoint temperature display is fl ashing, the 5 minute compressor lockout feature is operating (see Confi guration 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
1.Press SYSTEM key to select EM. “EM Heat Mode” will fl ash 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” fl ashing “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.
!CAUTION
To prevent compressor and/or property damage, if the outdoor temperature is below 50°F, DO NOT operate the cooling system.
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 fl ashing, the compressor lockout feature is operating (see Confi guration 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 or Prog)
There are three fan features on the
1.Fan Auto/On – Traditional Fan Settings
Press Fan to select Auto or On. The most commonly used setting is Auto. Fan Auto runs the fan only when the heating or cooling system is operating. Selecting Fan On runs the fan continuously for increased air circulation or to allow additional air cleaning if the system is equipped with an Electronic Air Cleaner.
2.FAN Prog – Comfort Circulating Fan Feature
Pressing FAN until FAN Prog appears activates the Com- fort Circulating Fan Option. This causes the thermostat to cycle the fan on for 10 minutes and off for 20 minutes if the thermostat has not called for heat or cool during the past 60 minutes. This assures moderate air circulation even when the heating and cooling equipment is not cycling.
3.FAN On Prog. – Programmable Fan
FAN On Prog indicates that a time period has FAN Prog selected in the Set Schedule mode (see Programmable Fan Option). The fan will run continuously through the pe- riod until the next period begins. To override FAN On Prog, press the FAN key to select Auto for the fan to run only when the heating or cooling system is operating.
Tip: Running the fan more frequently will increase your energy consumption. Most systems use a 1/2 or 1/3 HP electric motor to power the fan.
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 confi g- ured in HP1 or HP2 mode.
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