York LX series Manuale del Proprietario

Owner’s ManualOwner’s ManualDigital ThermostatLX SeriesDigital ThermostatLX SeriesRESIDENTIALS1-THSU21P1S1-THSU32P7S1-THSU32HP7ModelBACKLIT DISPLAY

HLoProgram ONOFF OutdoorFan On COOL SETA HEAT ETUX SDay NightMorningEveningSetup Step2nd3rdStageAmPm18:8818818888188Page 2Mode Indicators Sele

HLoProgram ONOFF OutdoorFan On COOL SETA HEAT ETUX SDay NightMorningEveningSetup Step2nd3rdStageAmPm18:8818818888188Page 3Desired Set Temperature

HLoProgram ONOFF OutdoorFan On COOL SETAUX HEAT SETDay NightMorningEveningSetup Step2nd3rdStageAmPm18:8818818888188AuxHeat icon Indicates 2nd s

Page 5Press the WARMER or COOLER buttons to modify the selection.Setting the Clock Quick StartSet ClockPress the SET CLOCK button. Adjust the clock u

Page 6Quick StartSelecting Your Desired Temperature AUTO-CHANGEOVER MODE - Pressing the WARMER or COOLER buttons in Auto orProgram mode will adjust bo

Page 7Assemble tools: Flat blade screwdriver, wire cutters and wirestrippers.Carefully unpack the thermostat. Save the screws, any brack-ets, and ins

Page 8Wire ConnectionsIf the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart below or the w

Page 9 24 VAC return Fan relay1st stage heat circuit1st stage compressor relay2nd stage heat circuit The LX Thermostat BackplateGY1Y2W3RW1/O/BW2HUMDEH

Page 10Explanation of Thermostat JumpersJumpers are located on the back of the thermostatGAS/ELECHEATPUMPGASELECRV=ORV=BJ3J2J1(FAN) CAUXOUTDOORDRYCON

Page 11Residential & Commercial 1 Stage Heating with no Fan. 3 Wire, Heat Only24VAC Power24VAC Common1st Stage HeatGas/Elec O (not used)Gas Resi

Page 12Installation InstructionsResidential & Commercial Heat Pump with ‘O’ Reversing Valve 5 Wire, 1 Stage Cooling, 1 Stage HeatR

Residential & Commercial Heat Pump with‘O’ Reversing Valve and Fossil Fuel furnace.7 Wire, 2 Stage Cooling, 3 Stage HeatR 24VAC Pow

Page 14Test OperationPress MODE to view the version numbers of the thermostat.Installation Instructions:To enter Technician Setup, press and hold the

Page 15User Setup:Press the SETUP button, then press MODE repeatedly until the Backlight setup step appears. Use the WARMER or COOLER buttons to make

Page 16Scrolling Screen and Display Options1User Setup:Scrolling Display Method (Setup Step 17) This option allows the user to choose how the scrollin

Page 17User SetupVacation Emergency Heat When the thermostat is programmed for Vacation mode, and it is in theProgram On mode, it will take effect a

Page 18Current Service Filter Runtime Hours (Setup Step 5) - This counter keeps track of the number of hours of fan runtime in the Heating mode, Cooli

Page 19To view, set, or reset System Runtimes, press the SETUP button, then pressMODE. Press MODE to advance to the desired setup step. Use the WAR

Page 20Select Day of Week to program - Press the WARMER or COOLER buttons to choose the day of the week to be programmed. Press Mode to advance to th

Page 21Selecting Your Program Mode (Setup Step 1) 7 Day Program - Allows all seven days to be programmed independently. Non Program - No advanced

Page iNOTE: Due to variations in environmental conditions, it is not always possible to achieve the desired humidification or dehumidification setpoi

Page 22Setpoint Limits (Setup Step 18) Maximum Heat Setpoint (Setup Step 19) - (35 - 99 ). Minimum Cool Setpoint (Setup Step 20) - (35 - 99 ). Whe

Page 23Deadband Settings (Setup Steps 25 - 34) The Deadband is the number of degrees or minutes that the thermostatwaits before it initiates the stage

Page 24Programming the Fan (Setup Steps 35 - 38) Fan Program (Setup Step 35) - This feature allows the fan to be programmed to turn on automatically

Page 25Humidity and Dehumidity (Setup Steps 40 -45, 70-71)Humidity Only With Heat (Setup Step 40) - When this step is set to ON, Humiditywill not run

Page 26Installer SetupDual Fuel On, Off, or External (Setup Step 50) - On - Tells the thermostat an outdoor temperature or a demand for third stage he

Page 27This feature allows the thermostat to display temperature in Fahrenheit or Celsius.Fahrenheit or Celsius (setup step 56)Control To Temp Source

Page 28Aux Output Polarity (Setup Step 57) Open (Normally Open) or Closed (Normally Closed). - Specifies if the Auxiliary output will beAux Outpu

Page 30Free Cooling With A/C (Setup Step 67) - When the Aux Output is being used for Free Cooling and an air conditioning system is present, set this

If, for any reason, you desire to return all the stored settings back to the factory default settings, follow the instructions below. Page 31Resettin

Page 32 Press all three buttons in the order outlined above for keypad lockoutLocking/Unlocking the KeypadTo prevent unauthorized use of the thermosta

Page 33 Technician SetupHLoProgram ONOFF OutdoorFan On COOL SETA HEAT ETUX SDay NightMorningEveningSetup Step2nd3rdStageAmPm18:8818818888188To ente

Description Step# Range DfPage 34Prog ModeAvailable ModesBacklight Backlight Level

Description Step# Range Advanced Setup Table DfPage 35*4th Stage Turnoff Point*Fan

Description Step# Range Advanced Setup Table DfPage 36*Humidity Polarity*Dehumidify

Page 37TroubleShootingSYMPTOM: The air conditioning does not attempt to turn on.CAUSE: The cooling setpoint is set too high.REMEDY: Lower the cooling

Page 38 2nd stage deadband, see Deadband dehum, 25 minutes of run- time, 23

Page 39Factory Defaults caution, i settings, 34, 35, 36 resetting, 31Fahrenheit, 27Fan off time delay, 24 on icon, 4

Page 40 Jumpers ELEC, 10 electric heat, 10 gas electric, 10 heat pump, 10 reversing valve,1

Page 41 daily schedule, 20 mode, 21 worksheet, back pageProgrammable Fan 24Auxiliary Output external control, 28 e

Glossary of TermsPage iiAuto-Changeover: A mode in which the thermostat will turn on the heating or cooling based on room temperature demand. Cool

Page 42 Technician Setup, 14, 33 Terminal, MISC, see MISCThermostat Sensor averaging, 27 calibrate, 33,14T

Page 43UV Light resetting, 19 runtime, see Runtime setting, see RuntimeVacation, button, see Buttons mode, 17 programming, 1

Five-Year Warranty - This Product is warranted to be free from defects in material and workmanship. If it appears within five years from the date of

Notes:

Notes:

Programming Worksheet see Page 20Printed on recycled paper.P/N 88-802 Rev. 5NoYesNoYesNoYesNoYesNoYesNoYesFRIDAYTURASDA

Table of ContentsPage iii51 1718 232424252627283015Quick StartGet to Know Your ThermostatUSER SETUPProgramming Fan OperationThermostat Display Options

PROGRAMHOLD TO SETOFF RUNPage 1EmergencyHeatVacation AccessoryHumidity*Outdoor Temp.Fan CoolerButtonModeButtonWarmerButtonHeat or CoolDemand Indicator