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Residential Light Commercial Systems Carrier Corporation 04/01 TSTATBBNB001 Page 1 Front Panel Front Panel AUTO COOL 74 HEAT 72 72 5 1 2 3 4 1 2 3 4 5 Liquid Crystal Display with Thermoglow Up/Down Buttons Mode Button Fan Button Heat or Cool Indicator Heat = Red, Cool = Green Page 2 Display Display 1 Mode IndicatorsFan On AUTO OFF COOL 88 HEAT 88882 3 1 1 3 1 1 4 3 2 4 Selects the operation mode of the equipment. HEAT - indicates the heat mode. COOL - indicates the air conditioning mode. AUTO - indicates the system will automatically changeover between heat and cool modes as the temperature varies. OFF - indicates the entire system is turned off. Page 6. Room Temperature Display Indicates the current room temperature. Desired Set Temperature Indicates desired room temperature(s). Page 7. Fan Operation Indication Fan On -indicates constant, continuous fan operation. When Fan On is not lit -indicates the fan will only operate when necessary to heat or to cool. Page 7. Page 3 Basic Operation Basic Operation Select Mode The HEAT setting indicates the temperature the room has to reach before the furnace will turn on to heat the room. The COOL setting indicates the temperature the room has to reach before the air conditioner will turn on to cool the room. AUTO will automatically select heat or cool based on room temperature demand. OFF indicates both heating and air conditioning systems are turned off. HEAT 74 72 COOL 72 72 MODE AUTO COOL 74 HEAT 72 72 OFF 72 MODE MODE Page 4 Basic Operation Basic Operation Select Desired Temperature AUTO COOL 74 HEAT 72 72 In any mode, adjust the desired Set Temperature with buttons. Pressing the Up or Down buttons in Auto mode will adjust both the heat and cool set temperatures simultaneously. Pressing the Up or Down buttons in Heat or Cool modes will adjust only the heat or cool set temperature. Press Fan Operation FAN Fan On AUTO COOL 74 HEAT 72 72 Fan On indicates constant fan operation. This feature is active even if the thermostat is set to Off. Page 5 Advanced Setup Advanced Setup Press the Mode button. MODE While holding the Mode, NOTE: Each step # is located at press the Fan button the top right corner of the for 5 seconds to enter Setup display for easy reference. FAN screens. 2 Select 2 for dual setpoint 1 for single setpoint. 2 85 2 Press 1 MODE On Select residential Heat Pump, ON or OFF. Press OFF 4 hp Off MODE B Select the reversing valve polarity for Heat Pump, O or B. (Step 5 only appears if heat pump is on in step 4) 50 Press O MODE Continued Page 6 Advanced Setup Advanced Setup Select Electric Heat On or Off. (Step 6 only appears if heat pump is off in step 4) OFF 6 eh Press 72 MODE Adjust the deadband from 1 - 6 degrees. Press COOL 8 HEAT 28f MODE Adjust the minimum difference between cooling & heating setpoints. (0 - 6 ) Press 9 cy 6 MODE Select the cycles per hour limit. d=cycles per hour limit defeated. d1=d + defeat 5 min. Compressor lockout. (d, d1, 2 - 6) Press MODE Continued Page 7 Advanced Setup Advanced Setup On i0 HEAT l i On Select the display backlight always On, or Off after 8 seconds. Off i i f C Select thermostat operation in degrees Fahrenheit or Centigrade. F Press the Mode button. While holding the Mode, press the Fanbutton for 2 seconds to leave the Setupscreens. If no buttons are pressed, thedisplay will leave the setup screens after30 seconds. Page 8 Press MODE Press MODE FAN Advanced Setup Advanced Setup Advanced Setup Table Step # Description Range Factory Default 2 Display Type Dual (2) or Single (1) 1-2 2 4 Heat Pump Off / On Off 5 Reversing Valve polarity O / B O 6 Electric Heat Off / On Off 7 Deadband or Temperature swing 1 -6 2 8 Forced minimum difference heat/cool 0 -6 2 9 Cycles per hour d, d1, 2 -6 6 10 Thermoglow backlight Off / On On 11 Fahrenheit or Centigrade F / C F Page 9 About Advanced Features & Operation About Advanced Features & Operation 2 STAGE OPERATION - The 2nd Stage of heat or cool is turned on when (1) the 1st Stage has been on for a minimum of two minutes, and (2) the temperature spread from the setpoint is equal to or greater than: the setpoint plus the deadband, plus 2 degrees. Heating Cooling Heat Setpoint Cool Setpoint Dead Band Dead Band2 degrees 2 degrees 1st Stage turn on 2nd Stage turn on 1st Stage turn on 2nd Stage turn on MINIMUM HEAT/COOL SETPOINT DIFFERENCE - The Heat and Cool setpoints will not be allowed to come any closer to each other than the value set in Advanced Setup step # 8, on page 7. This minimum difference is enforced during Auto changeover and Program On operation. EMERGENCY HEAT - Is a feature available to Heat Pump installations. To turn on Emergency Heat press in the Fan button. While holding the Fan button press the Up button for 2 seconds. The Cool setpoint display will read ‘EH’. During Emergency Heat the thermostat will turn on the fan and the 2nd stage of heat, when there is a demand for heat, locking out the 1st stage compressor. Exiting Emergency Heat is the same as entering. ...