American Standard ACONT900AC43UA Technical Information

69-1820-04OWNER’S GUIDEPub No. 12-5046-02ACONT900AC43UA Communicating, Programmable Comfort Control

12-5046-0210 69-1820—046. 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 complet

12-5046-0211 69-1820—04CANCELING A SCHEDULE PERIODNOTE: You may want to cancel a period to match your lifestyle; for example, if someone is always hom

12-5046-0212 69-1820—04NOTE: Note that the time, temperature(s) and fan setting disappear. The bar above the selected period is removed, indicating th

12-5046-0213 69-1820—04SETTING TIME1. Press Clock.2. Use arrows to set current time.3. Press Done key.IMPORTANTThe current day of the week should alre

12-5046-0214 69-1820—04OPERATING YOUR COMFORT CONTROLSetting Fan and System KeysSETTING FAN KEYThe Fan key selections vary based on your heating and/o

12-5046-0215 69-1820—04Setting Temperature OverridesYour Comfort Control has three temperature override options: Hold Temperature Until, Permanent Hol

12-5046-0216 69-1820—043. Press the Cancel or Sched key to cancel “Hold Tem-perature Until” and resume schedule.NOTE: Once “Hold Temperature Until” ti

12-5046-0217 69-1820—04VACATION HOLDChanges temperature setting for a selected number of days, from 1 to 365 days.1. Press the Up and Down arrow keys

12-5046-0218 69-1820—044. To cancel the Vacation Hold override early, press the Cancel key.SCHED CLOCK SCREENCANCELTHUFANAUTOSYSTEMHEATInsideDAYSHold

12-5046-0219 69-1820—04Fan SchedulePress Fan key while in the Scheduling Screen to program the System Fan. Choices available from the Scheduling Scree

12-5046-022 69-1820—04TABLE OF CONTENTSPage Contents3Features4 Home Screen6 Programming Your Heating and Cooling Schedule14 Operating Your Comfort Con

12-5046-0220 69-1820—04Fan Status Displayed on Home ScreenIf the Fan program is scheduled, Auto is shown and any programmable mode that is set; for ex

12-5046-0221 69-1820—04CLEANING YOUR COMFORT CONTROL SCREENThe Comfort Control has a touch screen interaction. Follow these steps to clean the screen

12-5046-0222 69-1820—04READING YOUR OUTDOOR TEMPERATUREIf the communicating Comfort Control has discovered an outdoor temperature sensor, the comfort

12-5046-0223 69-1820—04Reminder TimersThese reminders notify you when to change your furnace filters, humidifier pad, or other accessories. When the t

12-5046-0224 69-1820—04View or Reset Timer Settings Before They Expire1. Press More key until the Timer you want to modify appears on the screen.2. Pr

12-5046-0225 69-1820—04Partially Locked ScreenWhen partially locked, the screen indicates Screen Locked for 5 to 7 seconds whenever the user attempts

12-5046-0226 69-1820—04Fully Locked ScreenIn this mode, all keys are locked and not functional. To unlock screen, see “Advanced Settings” on page 34.

12-5046-0227 69-1820—04CONTROLLING YOUR INSIDE DEHUMIDIFICATION SETTINGIf the dehumidification control has been enabled, the communicating Comfort Con

12-5046-0228 69-1820—04NOTE: The dehumidification setpoint can range from 40% to 80% in 5% increments. The default dehumidification setpoint is 50%.3.

12-5046-0229 69-1820—04CONTROLLING YOUR INSIDE HUMIDIFICATION SETTINGIf the humidification control has been enabled, the communicating Comfort Control

12-5046-023 69-1820—04FEATURES• Large, Clear Display with Backlighting – current temperature, set temperature and time are easy-to-read and all are di

12-5046-0230 69-1820—04NOTE: The Humidification setpoint can range from 10% to 60% in 5% increments. The default humidification setpoint is 50%.3. Pre

12-5046-0231 69-1820—04Temperature RecoveryYour Comfort Control comes with a feature called Adaptive Intelligent Recovery (AIR), which eliminates all

12-5046-0232 69-1820—04IMPORTANTIt takes about a week for the Comfort Control to adjust to local weather, your schedule, the construction of your home

12-5046-0233 69-1820—04Advanced Heat Pump FeaturesIf you have a heat pump heating system, your Comfort Control can use some special features when used

12-5046-0234 69-1820—04ADVANCED SETTINGSYour Comfort Control has many advanced settings to match your heating and cooling system. But you can change t

12-5046-0235 69-1820—043. Release the center key when the display on your Comfort Control matches the display below.DONEOMONWEDTHUFRISATAATSUNUSER SET

12-5046-0236 69-1820—04USER SETUP MENUStep 1. User Setup Number 0120: First Two Digits of Current Calendar YearTo change current setting, press the Up

12-5046-0237 69-1820—04Step 3. User Setup Number 0140: Current Calendar MonthTo change Options, press the Up or Down arrow key to the right of number

12-5046-0238 69-1820—04To advance to the next Setup Number, press the Up arrow key to the right of 0160. To go backto the previous Setup Number, press

12-5046-0239 69-1820—04Step 8. User Setup Number 0280: Continuous BacklightTo change Options, press the Up or Down arrow key to the right of the numbe

12-5046-024 69-1820—04HOME SCREENKey DescriptionSCHEDHOLDCLOCKSCREENMORETUEAMFANAUTOSYSTEMHEATFollowingScheduleInsideSet ToM19952FANSELECTS ON/AUTO/CI

12-5046-0240 69-1820—04Step 10. User Setup Number 0330: Daylight Savings On or OffTo change Options, press the Up or Down arrow key to the right of th

12-5046-0241 69-1820—04American Standard Heating & Air Conditioning Droop is a feature that cycles the compressor on to improve indoor comfort by

12-5046-0242 69-1820—046 - 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

12-5046-0243 69-1820—047 - 270 fan run time days (about two years).8 - 365 fan run time days (about three years).9 - 30 fan continuous days (one month

12-5046-0244 69-1820—04Step 16. User Setup Number 0530: Adaptive Intelligent RecoveryTo change Options, press the Up or Down arrow key to the right of

12-5046-0245 69-1820—04Step 18. User Setup Number 0640: Clock FormatTo change Options, press the Up or Down arrow key to the right of the number in th

12-5046-0246 69-1820—04Step 20. User Setup Number 0700: Temperature Display OffsetTo change Options, press the Up or Down arrow key to the right of th

12-5046-0247 69-1820—04-2 - Offset humidity display by -2%-1 - Offset humidity display by -1%0 - Offset humidity display by 0%1 - Offset humidity disp

12-5046-0248 69-1820—04Error CodesThe Comfort Control can alert the homeowner and installer to problems with the HVAC equipment or Comfort Control by

12-5046-0249 69-1820—04FREQUENTLY ASKED QUESTIONS AND ANSWERSQ: Some or all keys on the display do not work; why?A: Comfort Control screen is locked.

12-5046-025 69-1820—04HOME SCREENDisplay DescriptionSCHEDHOLDCLOCKSCREENMORETUEAMFANAUTOSYSTEMHEATFollowingScheduleInsideSet ToM19953FANSHOWS FAN SETT

12-5046-0250 69-1820—04LIMITED WARRANTY LOW VOLTAGE ROOM COMFORT CONTROLS (PARTS ONLY)This limited warranty is extended by the manufacturer to the or

12-5046-0251 69-1820—04malfunctions or failures resulting from fire, water, storms, lightning, earthquake, theft, riot, misuse, abuse, increased utili

12-5046-0269-1820—04 M.S. Rev. 11-08American Standard Inc.Troup Highway Tyler, TX 75711-9010® U.S. Registered Trademark © 2008 American Standard I

12-5046-026 69-1820—04PROGRAMMING YOUR HEATING AND COOLING SCHEDULEYour Comfort Control can control up to four different schedule periods per day:Wake

12-5046-027 69-1820—04NOTE: Schedule times are in 15-minute intervals.Preprogrammed Energy Star SettingsTable 1 shows default program settings. Visit

12-5046-028 69-1820—04EDITING SCHEDULE1. Press Sched key.2. Press Edit key.SCHED HOLD CLOCK SCREENFRIAMPMFANAUTOSYSTEMHEATFollowingScheduleInsideSet M

12-5046-029 69-1820—043. It is OK to pick multiple days. Select any combination of days to edit. These days are sched-uled with the same times and tem