American Standard ACONT900AC43UA Owner's Manual
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American Standard ACONT900AC43UA Owner's Manual

Communicating, programmable comfort control
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ACONT900AC43UA Communicating,
Programmable Comfort Control
OWNER'S GUIDE
Pub No. 12-5046-02
69-1820-04

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Summary of Contents for American Standard ACONT900AC43UA

  • Page 1 ACONT900AC43UA Communicating, Programmable Comfort Control OWNER’S GUIDE Pub No. 12-5046-02 69-1820-04...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Page Contents Features Home Screen Programming Your Heating and Cooling Schedule Operating Your Comfort Control Cleaning Your Comfort Control Screen Reading Your Outdoor Temperature Reading Your Inside Humidity Level Controlling Your Inside Dehumidification Setting Controlling Your Inside Humidification Setting Advanced Settings User Setup Menu Error Codes...

  • Page 3: Features

    FEATURES • Large, Clear Display with Backlighting – current temperature, set temperature and time are easy-to-read and all are displayed on the home screen. • Menu Driven Programming – Guides you through the scheduling process, showing only necessary information and choices on each screen. •...

  • Page 4: Home Screen

    HOME SCREEN Key Description UP ARROW SELECTS ON/AUTO/CIRC RAISES TEMPERATURE SETTING Inside Set To AUTO SYSTEM DOWN ARROW Following SYSTEM SELECTS EM. HEAT/HEAT/OFF/COOL/AUTO LOWERS TEMPERATURE SETTING Schedule HEAT MORE (SELECT MODELS) SCHED HOLD CLOCK SCREEN MORE SHOWS ADDITIONAL SYSTEM INFORMATION SCHED SCREEN ENTERS SCHEDULING MODE...
  • Page 5 HOME SCREEN Display Description INSIDE TEMPERATURE SHOWS THE CURRENT INSIDE TEMPERATURE SHOWS CURRENT DAY OF THE WEEK SET TO TEMPERATURE SHOWS THE CURRENT SET TEMPERATURE SHOWS FAN SETTING Inside Set To AUTO SYSTEM Following SYSTEM SHOWS CURRENT SYSTEM POSITION Schedule FOLLOWING SCHEDULE HEAT SHOWS THE THERMOSTAT IS...

  • Page 6: Programming Your Heating And Cooling Schedule

    PROGRAMMING YOUR HEATING AND COOLING SCHEDULE Your Comfort Control can control up to four different schedule periods per day: Wake – Period when you awaken and want your home at a comfortable temperature. Leave – Period when you are away from home and want an energy-saving temperature. Return –...
  • Page 7 NOTE: Schedule times are in 15-minute intervals. Preprogrammed Energy Star Settings Table 1 shows default program settings. Visit the Energy Star web site at www.energystar.gov for additional education and resources on programmable Comfort Controls. Table 1. Energy Star Default Program Settings. Schedule Period Time Setpoints...

  • Page 8: Editing Schedule

    EDITING SCHEDULE Inside 1. Press Sched key. AUTO Following SYSTEM Schedule HEAT SCHED HOLD CLOCK SCREEN M22445 2. Press Edit key. OK TO PICK MULTIPLE DAYS SCREEN LOCKED Inside HEAT AUTO CANCEL Following SYSTEM Schedule PERIOD EM HEAT HEAT COOL COOL AUTO SCHED...
  • Page 9 3. It is OK to pick multiple days. Select any combination of days to edit. These days are sched- uled with the same times and temperatures. Check marks appear next to days selected. OK TO PICK MULTIPLE DAYS HEAT AUTO CIRC CANCEL PERIOD...
  • Page 10 6. Press Leave key and repeat step 5. 7. Press Return key and repeat step 5. 8. Press Sleep key and repeat step 5. 9. When complete, press Done key. “Saving Changes” appears on the screen to indicate changes are being saved to the day(s) modified. SAVING CHANGES M19956...
  • Page 11 CANCELING A SCHEDULE PERIOD NOTE: You may want to cancel a period to match your lifestyle; for example, if someone is always home during the day on Tuesday, you can cancel the Leave and Return periods (the Com- fort Control would then control to the Wake temperature until the Sleep period). 1.
  • Page 12 NOTE: Note that the time, temperature(s) and fan setting disappear. The bar above the selected period is removed, indicating the scheduled period was cancelled. To reinstate a schedule period, press arrow keys to set desired time and temperatures. 6. Press Done key. OK TO PICK MULTIPLE DAYS SCREEN LOCKED Inside...
  • Page 13 SETTING TIME 1. Press Clock. 2. Use arrows to set current time. SCHED SCHED HOLD HOLD CLOCK SCREEN DONE M19958 3. Press Done key. IMPORTANT The current day of the week should already be set correctly. If not, see “Advanced Settings” on page 34 to set the day.

  • Page 14: Operating Your Comfort Control

    On – Fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning. The American Standard Proprietary Humidity Control might disable continuous fan function. See “American Standard Proprietary Humidity Control” on page 28 for additional information.
  • Page 15 Setting Temperature Overrides Your Comfort Control has three temperature override options: Hold Temperature Until, Permanent Hold and Vacation Hold. HOLD TEMPERATURE UNTIL (TEMPORARY HOLD) Holds temperature temporarily until the next scheduled period time or until the time the user sets. 1.
  • Page 16 3. Press the Cancel or Sched key to cancel “Hold Tem- perature Until” and resume schedule. Inside NOTE: Once “Hold Temperature Until” time is reached, the AUTO comfort control shows “Following Schedule” on the screen to indicate that “Temporary Hold” has ended. SYSTEM Hold Temperature HEAT...
  • Page 17 VACATION HOLD Changes temperature setting for a selected number of days, from 1 to 365 days. 1. Press the Up and Down arrow keys to set the desired temperature while away on vacation. Notice that “Hold Temperature Until” time is shown on the screen. (This is the time the Vacation Hold override expires after the number of days ends.) 2.
  • Page 18 4. To cancel the Vacation Hold override early, press the Cancel key. Inside Set To AUTO SYSTEM Hold Temperature HEAT Until DAYS SCHED CLOCK SCREEN CANCEL M19961 12-5046-02 69-1820—04...
  • Page 19 Fan Schedule Press Fan key while in the Scheduling Screen to program the System Fan. Choices available from the Scheduling Screen: On – Fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning. Auto –...
  • Page 20 On – Fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning. The American Standard Proprietary Humidity Control might disable continuous fan function. See “American Standard Proprietary Humidity Control” on page 28 for additional information.

  • Page 21: Cleaning Your Comfort Control Screen

    CLEANING YOUR COMFORT CONTROL SCREEN The Comfort Control has a touch screen interaction. Follow these steps to clean the screen without making comfort control changes: 1. Press Screen key. Comfort Control locks out touch keys for 30 seconds to allow for cleaning. 2.

  • Page 22: Reading Your Outdoor Temperature

    READING YOUR OUTDOOR TEMPERATURE If the communicating Comfort Control has discovered an outdoor temperature sensor, the comfort control displays the outdoor temperature. VIEW OUTSIDE TEMPERATURE The outside temperature is located in the lower right corner of the Home Screen. NOTE: If the communicating Comfort Control is in auto mode, the outdoor temperature can be dis- played by pressing the More key.
  • Page 23 Reminder Timers These reminders notify you when to change your furnace filters, humidifier pad, or other accessories. When the time you set expires, the Comfort Control flashes “Change” and then “Filter” or “Change” and “Humidifier Pad” until you reset the timer. NOTE: See Steps 11 through 13.
  • Page 24 View or Reset Timer Settings Before They Expire 1. Press More key until the Timer you want to modify appears on the screen. 2. Press Edit key to change the Timer reload value. Use Up and Down arrow keys to change the number of Run Time Days.

  • Page 25: Partially Locked Screen

    Partially Locked Screen When partially locked, the screen indicates Screen Locked for 5 to 7 seconds whenever the user attempts to press a key that is locked. Pressing a locked key while Screen Locked is shown flashes Screen Locked on the screen. Pressing an unlocked key while Screen Locked is active removes the screen lock.

  • Page 26: Reading Your Inside Humidity Level

    NOTE: If the communicating Comfort Control is in auto mode, the indoor humidity level can be displayed by pressing the More key. NOTE: CONTINUOUS fan mode during COOLING operation may not be appropriate in humid cli- mates. The American Standard Proprietary Inside Humidity Control might disable continuous fan AUTO function.

  • Page 27: Controlling Your Inside Dehumidification Setting

    CONTROLLING YOUR INSIDE DEHUMIDIFICATION SETTING If the dehumidification control has been enabled, the communicating Comfort Control will read the inside humidity level and set a desired humidity level to help dehumidify the house. 1. Press the More key until the inside humidity percent and dehumidification setpoint are shown. 2.
  • Page 28 NOTE: If auto changeover is selected, the deadband can be no closer than 5 degrees with dehumidification enabled. American Standard Proprietary Humidity Control When enabled, this feature will disable any blower off delays and disable continuous fan mode when the indoor humidity is above the dehumidification setpoint. This will help prevent coil condensation from being evaporated back into the air stream.

  • Page 29: Controlling Your Inside Humidification Setting

    CONTROLLING YOUR INSIDE HUMIDIFICATION SETTING If the humidification control has been enabled, the communicating Comfort Control will read the inside humidity level and set a desired humidity level to help humidify the house. 1. Press the More key until the inside humidity percent and humidification setpoint are shown. 2.
  • Page 30 NOTE: The Humidification setpoint can range from 10% to 60% in 5% increments. The default humidification setpoint is 50%. 3. Press Done key to save your changes and return to the Home screen. 4. Press Cancel key to return to Home screen without saving any changes. Humidification Control If the humidification control has been enabled, the Comfort Control attempts to control to this humidification setpoint by turning on the humidifier.
  • Page 31 Temperature Recovery Your Comfort Control comes with a feature called Adaptive Intelligent Recovery (AIR), which eliminates all guesswork when setting your schedule. How long does it take the furnace to warm your house in the morning before you get out of bed or how long does it take the air conditioner to cool your house in the afternoon before you return from work? No problem.
  • Page 32 Inside AUTO Following SYSTEM Schedule Recovery HEAT Humidity SCHED HOLD CLOCK SCREEN MORE M19968 IMPORTANT It takes about a week for the Comfort Control to adjust to local weather, your schedule, the construction of your home and your heating and/or cooling system. Your Comfort Control learns from experience.
  • Page 33 Advanced Heat Pump Features If you have a heat pump heating system, your Comfort Control SET CURRENT DAY SET MONTH can use some special features when used with an Outdoor Temperature Sensor, such as compressor and/or backup heat lockout based on outside temperature. For example, if your backup heat does not turn on above a designated outside SAT T OK TO PICK MULTIPLE DAYS SCREEN LOCKED...

  • Page 34: Advanced Settings

    ADVANCED SETTINGS Your Comfort Control has many advanced settings to match your heating and cooling system. But you can change these settings to match your lifestyle: 1. From the Home Screen, press the System key. Five blank touch keys show on the bottom of the screen between the Done and Cancel keys.
  • Page 35 3. Release the center key when the display on your Comfort Control matches the display below. ADVANCE TO NEXT USER SETUP USER SETUP CURRENT NUMBER SETTING SAT A A T DONE CHANGE THE PRESS TO EXIT CURRENT USER SETUP SETTING M22654 12-5046-02 69-1820—04...

  • Page 36: User Setup Menu

    USER SETUP MENU Step 1. User Setup Number 0120: First Two Digits of Current Calendar Year To change current setting, press the Up or Down arrow key to the right of the two-digit number in the lower right corner of the screen. Options: 20 - Equals years 20xx.
  • Page 37 Step 3. User Setup Number 0140: Current Calendar Month To change Options, press the Up or Down arrow key to the right of number in lower right corner of the screen. Options: 1 through 12 - equals January through December. To advance to the next Setup Number, press the Up arrow key to the right of 0140.
  • Page 38 To advance to the next Setup Number, press the Up arrow key to the right of 0160. To go back to the previous Setup Number, press the Down arrow key. Step 6. User Setup Number 0165: Restore Energy Star Schedule To reset the programmed heating and cooling schedule back to the default Energy Star program schedule, press the Up or Down arrow key to the right of the number in the lower right corner of the screen.
  • Page 39 Step 8. User Setup Number 0280: Continuous Backlight To change Options, press the Up or Down arrow key to the right of the number in the lower right corner of the screen. Options:| 0 - No. Continuous backlight OFF.| 1 - Yes. Continuous backlight ON. Backlight will dim to half brightness 45 seconds after last key press.
  • Page 40 0 - No dehumidification control 1 - Integrated Temperature and humidity control (Factory default) 4 - American Standard Heating & Air Conditioning droop (RH setpoint) The dehumidification control attempts to control the indoor humidity to the user’s dehumidification setpoint by running the compressor. In extremely high humidity conditions, the Comfort Control keeps the compressor running for up to 3°F (-1.7°C) below the temperature setpoint.
  • Page 41 American Standard Heating & Air Conditioning Droop is a feature that cycles the compressor on to improve indoor comfort by removing moisture from the air. The Droop cycle is activated when the indoor humidity is above the user’s dehumidification setpoint.
  • Page 42 6 - 180 fan run time days (about one year and six months). 7 - 270 fan run time days (about two years). 8 - 365 fan run time days (about three years). 9 - 30 fan continuous time days (one month). 10 - 60 fan continuous time days (two months).
  • Page 43 7 - 270 fan run time days (about two years). 8 - 365 fan run time days (about three years). 9 - 30 fan continuous days (one month). 10 - 60 fan continuous days (two months). 11 - 90 fan continuous days (three months). 12 - 120 fan continuous days (four months).
  • Page 44 Step 16. User Setup Number 0530: Adaptive Intelligent Recovery To change Options, press the Up or Down arrow key to the right of the number in lower right corner of the screen. Options: 0 - Conventional recovery 1 - Adaptive intelligent recovery To advance to the next Setup Number, press the Up arrow key to the right of 0530.
  • Page 45 Step 18. User Setup Number 0640: Clock Format To change Options, press the Up or Down arrow key to the right of the number in the lower right corner of the screen. Options: 12 - 12 hour clock. 24 - 24 hour clock. To advance to the next Setup Number, press the Up arrow key to the right of 0640.
  • Page 46 Step 20. User Setup Number 0700: Temperature Display Offset To change Options, press the Up or Down arrow key to the right of the number in the lower right corner of the screen. Options: -3 - Offset temperature display by -3°F (-1.5°C). -2 - Offset temperature display by -2°F (-1.0°C).
  • Page 47 -2 - Offset humidity display by -2% -1 - Offset humidity display by -1% 0 - Offset humidity display by 0% 1 - Offset humidity display by 1% 2 - Offset humidity display by 2% 3 - Offset humidity display by 3% 4 - Offset humidity display by 4% 5 - Offset humidity display by 5% NOTE: Offsetting the indoor humidity display affects both the display as well as the control.

  • Page 48: Error Codes

    Comfort Control by using error codes. When displaying an Error Code, the screen will display “Err” and a bright red light will appear in the top-right corner of the comfort control. Refer to the Alert Code Addendum (document number 18-HD32D2-1/69-2009) provided with comfort control, or contact your authorized American Standard dealer. 12-5046-02 69-1820—04...

  • Page 49: Frequently Asked Questions And Answers

    24 or “Cleaning Your Comfort Control Screen” on page 21. Q: The fan is set to On but is not running; why? A: The The American Standard Proprietary Humidity Control disables continuous fan mode when the indoor humidity is above the dehumidification setpoint. See “American Standard Proprietary Humidity Control”...
  • Page 50 LIMITED WARRANTY LOW VOLTAGE ROOM COMFORT CONTROLS (PARTS ONLY) This limited warranty is extended by the manufacturer to the original purchaser and to any succeeding owner of the real property to which the low voltage room comfort control is originally affixed and applies to products purchased and retained for use within the U.S.A.
  • Page 51 malfunctions or failures resulting from fire, water, storms, lightning, earthquake, theft, riot, misuse, abuse, increased utility usage costs, or (4) performance problems due to improper selection / equipment match-up, installation, or application. THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES AND LIABILITIES, WHETHER IN CONTRACT OR IN NEGLEGENCE, EXPRESSED OR IMPLIED, IN LAW OF IN FACT, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE, AND IN NO EVENT SHALL WARRANTOR BE LIABLE FOR ANY INCIDENTAL OR...

  • Page 52: Customer Assistance

    For service, contact your local heating and cooling contractor or visit www.americanstandardair.com American Standard Companies 6200 Troup Highway Tyler, TX 75707 ® U.S. Registered Trademark © 2008 American Standard Inc. American Standard Inc. All Rights Reserved Troup Highway 12-5046-02 Tyler, TX 75711-9010 69-1820—04 M.S.

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