Multi-stage/Heat Pump ElectronicDigital Thermostat
WHITE-RODGERS
Operator: Save this booklet for future use!
INSTALLATION &OPERATION GUIDE
1F92W-51
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About Your New Thermostat . . .
Your new White-Rodgers Digital Multi-stage/Heat Pump Thermostat uses the technology of a solid-statemicrocomputer to provide precise time/temperature control. This thermostat offers you the flexibility todesign heating and cooling programs that fit your needs.
Please read this manual thoroughly before operating or programming your thermostat. If you havequestions, contact us at the address shown on the back cover of this manual.
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In This Guide . . .
OPERATING YOUR THERMOSTAT ............... 22PARTS OF THE THERMOSTAT
The Back Of the Thermostat BodyThe DisplayThe Thermostat Buttons
OPERATING FEATURESPROGRAMMING YOUR
THERMOSTAT ........................................... 34PLANNING FOR YOUR NEEDSENTERING YOUR PROGRAM
Set Current Time and DayEnter Heating ProgramEnter Cooling Program
CHECK YOUR PROGRAMMINGQUESTIONS AND ANSWERS ........................ 44
YOUR NEW THERMOSTAT’SFEATURES .................................................. 4
PRECAUTIONS ................................................. 5THE THERMOSTAT’S SPECIFICATIONS ....... 6INSTALLING YOUR THERMOSTAT ................ 7
NEW INSTALLATIONSelect Thermostat LocationRoute Wires to Location
REPLACEMENT INSTALLATIONRemove Old ThermostatAttach Subbase to Wall
SYSTEM CONFIGURATONSet Option Switches
CHECK THERMOSTAT OPERATIONFan OperationHeating System OperationCooling System Operation
LOCKOUT BYPASS OPTIONCompressor Long Term Cycle ProtectionCompressor Short Term Cycle Protection
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YOUR NEW THERMOSTAT’S FEATURES
• Five-day/two-day programming capability
• Simultaneous heat and cool program storage
• Four separate time and temperature settingsper 24-hour period
• Up to 2 stages of heat and up to 1 stage of cool
• Computed Energy Management Recovery(EMR)
• Automatic changeover (operator selectable)
• Two hour temperature override
• Manual program override (HOLD temperature)
• “Advance Program” button
• Armchair programming capability
• LCD displays continuous setpoint, time, androom temperature
• Adjustable cycle times
• 9 volt Energizer® alkaline battery backup
• Compressor long term cycle protection
• Compressor short cycle protection
• Blower delay in the cooling cycle
• Preprogrammed temperature control
• Visual prompting during operation
• Programmable blower control
• Temperature range 40° to 99°F• °F/°C convertibility
• Electric Heat (installer-selectable)
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PRECAUTIONSIf in doubt about whether your wiring is millivolt, line,or low voltage, have it inspected by a qualifiedheating and air conditioning contractor, electrician,or someone familiar with basic electricity and wiring.Do not exceed the specification ratings.All wiring must conform to local and national electri-cal codes and ordinances.This control is a precision instrument, and should behandled carefully. Rough handling or distorting com-ponents could cause the control to malfunction.
To prevent electrical shock and/or equip-ment damage, disconnect electric power tosystem, at main fuse or circuit breaker box,until installation is complete.
CAUTION!
Do not use on circuits exceeding specifiedvoltage. Higher voltage will damage controland could cause shock or fire hazard.Do not short out terminals on gas valve orprimary control to test. Short or incorrectwiring will burn out thermostat and couldcause personal injury and/or propertydamage.
WARNING!
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THE THERMOSTAT’S SPECIFICATIONS
THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER AREPRESENT AT THE THERMOSTAT (both the hot and common sides of the 24 VAC end of thetransformer.)
ELECTRICAL DATAElectrical Rating:
20 to 30 VAC 50/60 Hz.0.01 to 1.5 Amps (Load per terminal)2.5 Amps Maximum Total Load (All terminals
combined)Anticipation:
Heating 4 to 40Cooling 4 to 40Auxiliary 4 to 40
STAGING DATAUp to 3 heating stagesUp to 1 cooling stage
THERMAL DATASetpoint Temperature Range:
40°F to 99°F (4°C to 37°C)Operating Ambient Temperature Range:
32°F to 105°FOperating Humidity Range:
0 to 90% RH (non-condensing)Shipping Temperature Range:
-40°F to 150°FACCESSORIES
Thermostat Guard:W. R. Part No. F29-0198 (clear)
or F29-0238 (opaque)
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INSTALLING YOUR THERMOSTAT
NEW INSTALLATION
WE RECOMMEND THAT YOU PROGRAM THETHERMOSTAT WITH BATTERY INSTALLED BE-FORE ATTACHING ON SUBBASE. SEE OPERA-TION SECTION FOR PROGRAMMING INSTRUC-TIONS.
SELECT THERMOSTAT LOCATION
Proper location insures that the thermostat willprovide a comfortable building temperature. Ob-serve the following general rules when selectinga location:1. Locate thermostat about 5 ft. above the floor.
2. Install thermostat on a partitioning wall, not on anoutside wall.
3. Never expose thermostat to direct light fromlamps, sun, fireplaces or any temperature radiat-ing equipment.
4. Avoid locations close to windows, adjoining out-side walls, or doors that lead outside.
5. Avoid locations close to air registers or in thedirect path of air from them.
6. Make sure there are no pipes or duct work in thatpart of the wall chosen for the thermostat loca-tion.
7. Never locate thermostat in a room that normallywarmer or cooler than the rest of the building.
8. Avoid locations with poor air circulation, such asbehind doors or in alcoves.
ROUTE WIRES TO LOCATION
All wiring must conform with local and nationalelectrical codes and ordinances.
NOTE
8
1. Probe for obstructions in partition before drilling1⁄2” hole in wall at selected location. Take upquarter round and drill a small guide hole forsighting (see fig. 1). From basement, drill 3⁄4” holein partition floor next to guide hole. In buildingswithout basements, drill 1⁄2” hole through ceilingand into partition from above (see fig. 1).
2. Through this hole drop a light chain, or 6” chainattached to a strong cord. Snag cord in basementwith hooked wire. In buildings without base-ments, drop cord through hole in ceiling anddown partitioning; snag cord at the thermostatlocation.
3. Attach thermostat wires to cord and pull wiresthrough hole in wall so that 6” of wire comes outof the wall.
Approximately5 feet from floor
1⁄2” hole forthermostat wire
Stout cord with 6”chain attached
Baseboardstrip moulding
1⁄4” guide holefor sighting
Quarter roundremoved
3⁄4” hole in floor of partition
Hooked wire for snagging chain
Figure 1. Routing thermostat wires
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REPLACEMENT INSTALLATION
REMOVE OLD THERMOSTAT
1. Shut off electricity at the main fuse box untilinstallation is complete. Verify power is offwith a voltmeter.
2. Remove the front cover of the old thermo-stat. With wires still attached, removewall plate from the wall.
3. If the old thermostat has a wall mountingplate, remove the thermostat and the wallmounting plate as an assembly.
4. Use the Cross Reference Guide to find thethermostat type you are replacing.
5. Identify each wire attached to the old thermo-stat using the labels enclosed with the newthermostat (see Table 1). Record the identifi-cation of the wire on the corresponding blankin Table 2.
TABLE 1. WIRE IDENTIFICATION LABELS
1G
G1
9Y1
Y19
2C
C2
3L
L3
4R
R4
5O
O5
6B
B6
7E1
E17
8E2
E28
10Y2
Y210
11W1
W111
12W2
W212
13W3
W313
14S1
S114
15S2
S215
16S3
S316
6. Disconnect the wires from old thermostat one ata time . Pull at least 6 inches of wire out of thewall. DO NOT LET WIRES FALL BACK INTOTHE WALL.
7. Install new thermostat using the following proce-dures.
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TABLE 2. TERMINAL REFERENCE
LABELNUMBER
NEW THERMOSTATTERMINAL
DESIGNATION FUNCTION
OLD THERMOSTATTERMINAL
DESIGNATION
(1)(2)(3)(4)(5)(6)(7)
(8)
(9)(10)(11)(12)(13)
GCLROBE1
E2
Y1Y2W1W2W3
Fan OutputTransformer 24 VAC Common(this terminal not used)Transformer 24 VAC HotChangeover Output (Cooling)Changeover Output (Heating)Emergency Heat Relay (cycles on 1st stage in Emergency Mode)Emergency Heat Relay (continually energized in Emergency Mode)Stage 1 Cool(this terminal not used)Stage 1 Heat (Compressor)Stage 2 Heat (Auxiliary)(this terminal not used)
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ATTACH SUBBASE TO WALL
1. Remove the packing material from the thermo-stat. Place the fingers of one hand on the centertop and bottom portion of the thermostat. Graspthe subbase in the other hand on the top andbottom center, and gently pull straight out (seefig. 2). The thermostat has pin and socket con-nectors. Forcing or prying on the thermostat willcause damage to the unit.
2. Connect wires beneath terminal screws on sub-base using wiring schematic for your particularapplication (see figs. 3 through 6).
3. Place subbase over hole in wall and markmounting hole locations on wall using subbaseas a template.
4. Move subbase out of the way. Drill mountingholes.
5. Fasten subbase loosely to wall, as shown in fig.3, using two mounting screws. Place a levelagainst bottom of subbase, adjust until level, and
then tighten screws. (Leveling is for appearanceonly and will not affect thermostat operation.) Ifyou are using existing mounting holes, or if holesdrilled are too large and do not allow you totighten subbase snugly, use plastic expansionplugs to secure subbase.
6. Push excess wire into wall and plug hole with afire-resistant material (such as fiberglass insula-tion) to prevent drafts from affecting thermostatoperation.
(Instructions continue on page 16).
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DO NOT EXCEED MAXIMUM VOLTAGE ORCURRENT RATINGS. FIRE, PERSONAL IN-JURY, AND/OR EQUIPMENT DAMAGECOULD RESULT.
To prevent electrical shock and/or equip-ment damage, disconnect electrical powerat the main fuse box until installation iscomplete. Verify power is off with a volt-meter.
CAUTION!
Mountinghole
Pull wires throughthis opening
Connect wires underterminal screws
Mountinghole
4-pin connector
9-pin connector
Y1
CG
W1
R
Expansionplugs
Figure 3. Subbase
S1 S2 S3OB
Y2
W2W3
E1E2L
WARNING!
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C RGBO
Changeover
Energized
In Heat
Changeover
Energized
In Cool
Compressor
Contactor
Stage 1
Fan
Relay
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Thermostat
Control
Circuit
24 VAC 120 VAC
Hot
Neutral
THERMOSTAT
SYSTEMY1 W1 W2
Figure 4. Typical wiring diagram for single transformer systems
E1
EmergencyRelay
ConstantOutput
E2
EmergencyRelay
SwitchedOutput
TRANSFORMER
The following wiring diagrams show typical terminal iden-tification and wiring. For proper installation, refer to theoriginal manufacturers' instructions.
NOTE
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NOTEIF SAFETY CIRCUITS ARE IN ONLY ONE OF THESYSTEMS, REMOVE THE TRANSFORMER OF THESYSTEM WITH NO SAFETY CIRCUITS.
Figure 5. Typical wiring diagram for two transformer systems with NO safety circuits
DEPENDING ON SYSTEM REQUIRE-MENTS, REPLACE WITH A
75VA TRANSFORMER, IF NEEDEDTWO COMMONS MUST
BE JUMPERED TOGETHER!
CUT ANDTAPE OFF!
C RGBO
24 VAC 120 VAC
Hot
Neutral
THERMOSTAT
SYSTEMY1 W2E1 E2
TRANSFORMER
HEAT PUMP SYSTEM AUXILIARY HEATING SYSTEM
W1
24 VAC120 VAC
Hot
Neutral
TRANSFORMER
Changeover
Energized
In Cool
Changeover
Energized
In Heat
Fan
Relay
Compressor
Contactor
Stage 1
EmergencyRelay
SwitchedOutput
Thermostat
Control
Circuit
EmergencyRelay
ConstantOutput
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Limit or
Safety
Switches
Limit or
Safety
Switches
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Figure 6. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems
TWO COMMONS MUSTBE JUMPERED TOGETHER!
C RGBOTHERMOSTAT
SYSTEMY1 W2E1 E2
HEAT PUMP SYSTEM AUXILIARYHEATING SYSTEM
W1
Changeover
Energized
In Cool
Changeover
Energized
In Heat
Fan
Relay
Compressor
Contactor
Stage 1
EmergencyRelay
SwitchedOutput
Thermostat
Control
Circuit
EmergencyRelay
ConstantOutput
Heat
Relay
Stage 1
Heat
Relay
Stage 2
24 VAC 120 VAC
Hot
Neutral
HEAT PUMPTRANSFORMER
24 VAC 120 VAC
Hot
Neutral
AUXILIARYHEATING
TRANSFORMER
24 VACAccessoryRelay N.O.
Contact
Limit or
Safety
Switches
Limit or
Safety
Switches
Limit or
Safety
Switches
Limit or
Safety
Switches
NOTERelay contacts shown are thermostatically operated. Theaccessory relay scheme is required when safety circuitsexist in both systems.
Polarity must be observed. If the HOTside of the second transformer isjumpered to the COMMON side of thefirst transformer a short will be made.Damage to equipment will occur whenpower is restored.
CAUTION!
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ATTACH THERMOSTAT TO SUBBASE
WE RECOMMEND THAT YOU SET OPTIONSWITCHES TO DESIRED POSITION BEFORE AT-TACHING ON SUBBASE (see OPERATION). WEALSO RECOMMEND THAT YOU PROGRAM THETHERMOSTAT WITH BATTERY INSTALLED BE-FORE ATTACHING ON SUBBASE (see OPERA-TION section for programming instructions).
USE SYSTEMHEAT-OFF-COOL-AUTO
TO TURN THERMOSTAT OFF BE-
FORE ATTACHING TO WALL. FAILURE TO TURNOFF THERMOSTAT BEFORE ATTACHING TOWALL MAY CAUSE EQUIPMENT DAMAGE DUETO RAPID COMPRESSOR CYCLING.To attach thermostat to subbase, line up the plasticsnap guides at the top of the thermostat and the 4connector pins on the thermostat with the connec-tors near the top right section of the subbase (whenviewed from the front). Gently pivot the thermostatdown until the 9-pin connectors and the plastic
snaps lock into place (see fig. 7). Be gentle whenattaching thermostat . If the thermostat does notseem to be attaching to the subbase easily, makesure that the connector pins and plastic snaps areproperly aligned, and that excess wire is pushed intothe wall. Damage to the thermostat may occur ifforce is used.
ENGAGE TWO UPPER GUIDES; PIVOT DOWN
Figure 7. Attaching thermostat to subbase
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SYSTEM CONFIGURATION
ANY TIME AN OPTION SWITCH IS CHANGED,THE 9 VOLT ENERGIZER® BATTERY MUST BEREMOVED FOR A MINIMUM OF 2 MINUTES.
NOTE
SET OPTION SWITCHES
1. Single Stage Compressor Heat Pump — withreversing valve energized through B or O termi-nals
2. Two Compressor (Split) System
Figure 8. Back of thermostat
Option switches 9-pin connector
4-pin connector Battery
W18
ON
1 2 3 4
Switch #1Switch #2Switch #3Switch #4 (see step 6)
OFFOFFOFF
W1 Y1 Field jumper W1 & Y1
ON
1 2 3 4
Switch #1Switch #2Switch #3Switch #4 (see step 6)
OFFONOFF
W1 Y1 Field jumper W1 & Y1
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5. Automatic Changeover from Heat to Cool
The battery maintains the stored program in theevent of a power failure. When attached to the wallwith 24 VAC power applied, the thermostat willfunction normally without the battery. However, theprogram will be lost in the event of power interruptionor failure if the battery is not installed. When poweris restored, the thermostat will automatically main-tain a temperature of 64°F or a cooling temperatureof 82°F (factory preprogrammed) as needed.
3. Multi-stage (Fossil Fuel) System — up to 2heat stages and 1 cool stage
4. Multi-stage (Electric Heat) System — up to 2heat stages and 1 cool stage
ON
1 2 3 4
Switch #1Switch #2Switch #3Switch #4 (see step 6)
ONOFFOFF
ON
1 2 3 4
Switch #1Switch #2Switch #3 (see step 5)Switch #4 (see step 6)
ONON
ON
1 2 3 4
Switch #1 (see steps 1-4)Switch #2 (see steps 1-4)Switch #3 (see step 5)Switch #4 ON
NOTE
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CHECK THERMOSTAT OPERATION
When checking thermostat, option switch #4 forautomatic changeover must be in the OFF position.This will allow temporary setting of heat set pointsabove cool settings. After system checkout, resetoption switch to ON position if automatic changeoveris desired (see SET OPTION SWITCHES).
FAN OPERATION
1. Turn on power to the system. If the auxiliary heatsource has a standing pilot, be sure to light it.
2. Press FANON – AUTO until FAN is displayed. The
blower should begin to operate.
3. Press FANON – AUTO until FAN is displayed. The
blower should stop operating within approxi-mately one minute.
NOTE
HEATING SYSTEM OPERATION
1. Press SYSTEMHEAT-OFF-COOL-AUTO
until HEAT is displayed. (It should
already be displayed.)
2. Press to adjust thermostat to 99°F. Allstages of the heating system should come onwithin approximately five minutes. However, ifthe PUMP LED is flashing, the compressor lock-out feature is operating (see Lockout BypassOption to temporarily override the compressorlockout feature during testing).
3. Press SYSTEMHEAT-OFF-COOL-AUTO
until EMER is displayed. Repeat
step 2.
4. To program the thermostat, see PROGRAM-MING YOUR THERMOSTAT.
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COOLING SYSTEM OPERATION
To prevent compressor and/or propertydamage, if power to the compressor hasbeen off or interrupted for more than 1hour and the outdoor temperature is be-low 50 °F, DO NOT operate the system forat least the amount of time the compres-sor was off! This will allow the compres-sor heaters to warm the compressor oilsto avoid damage due to slugging.
1. Press SYSTEMHEAT-OFF-COOL-AUTO
until COOL is displayed.
2. Press to adjust thermostat to 40°F. Thecooling system should come on within approxi-mately five minutes. However, if the fan is run-ning but the compressor is not, the compressorlockout feature is operating (see Lockout By-
pass Option to temporarily override the com-pressor lockout feature during testing).
3. To program the thermostat, see PROGRAM-MING YOUR THERMOSTAT.
After heating and cooling system have been checkedand are running properly, determine if automaticchangeover is desired. When option switch #4 is inthe proper position, automatic changeover is en-
abled by pressing SYSTEMHEAT-OFF-COOL-AUTO
until AUTO is displayed
(see SET OPTION SWITCHES). In the AUTO mode,the setpoint temperature is not displayed.
CAUTION!
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LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’USE ONLY. OPERATORS SHOULD NOT USETHIS FEATURE DUE TO POSSIBILITY OFEQUIPMENT OR PROPERTY DAMAGE, ORPERSONAL INJURY.DO NOT USE THE LOCKOUT BYPASS OP-TION UNLESS THE COMPRESSOR OILHEATERS HAVE BEEN OPERATIONAL FOR6 HOURS AND THE SYSTEM HAS NOT BEENOPERATIONAL FOR AT LEAST 5 MINUTES.
COMPRESSOR LONG TERM CYCLEPROTECTION
To protect the compressor from potential damagedue to temperature change of crankcase oil, thisthermostat has a built-in time delay of one hour less
CAUTION!
than the power loss to the unit (up to 12 hoursmaximum lockout). During this time, auxiliary heatwill be used when necessary to maintain setpointtemperature. DO NOT attempt to override this delayfeature before crankcase temperature has stabi-lized (for example, if power has been out for threehours, the compressor should remain locked out fortwo hours).
COMPRESSOR SHORT TERM CYCLEPROTECTION
This thermostat has a built-in short term (5-minute)time delay. During this 5-minute period, the thermo-stat will lock out the compressor to allow headpressure to stabilize. If you want to override thisfeature while testing thermostat operation, simply
press ADVPRGM and HOLD
TEMP at the same time at initial
startup.
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OPERATING YOUR THERMOSTAT
Before you begin programming your new thermo-stat, you should be familiar with its features and withthe display and the location and operation of thethermostat buttons. The information in this sectionwill help you become familiar with your thermostat sothat you can easily program it.Your thermostat consists of two parts: the thermo-stat body and the subbase .
Use SYSTEMHEAT-OFF-COOL-AUTO
to turn the thermostat OFF
before removing or attaching the thermo-stat body. Equipment damage and/or per-sonal injury could occur.
The subbase is attached to the wall, but you canremove the thermostat body for easy programming.To remove the thermostat body from the subbase,grasp the thermostat body and gently pull it straightout from the subbase (see fig. 9). To attach thethermostat body, line up the four terminal pins on theupper section of the thermostat back with the match-ing connector on the subbase. Insert these, thengently pivot the thermostat body down to connect the
CAUTION!
PULL STRAIGHT OUT
Figure 9. Removing thermostat from subbase
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nine pin connectors on the lower portion of thethermostat back. Gently push until the snap connec-tors engage (see fig. 10). DO NOT FORCE OR PRYTHE THERMOSTAT, as this may damage the unit.
PARTS OF THE THERMOSTAT
The Back of the Thermostat Body
Turn the thermostat body over. On the back are the9 volt Energizer® alkaline battery and the optionswitches.1. The 9 volt Energizer® alkaline battery provides
power to the thermostat when the 24 VAC poweris interrupted (for example, when you remove thethermostat from the wall for programming). Afresh battery will maintain the stored program forapproximately one week. If power loss is longenough for the program to be lost, the thermostatwill automatically maintain a factory prepro-grammed heating temperature of 64°F and acooling temperature of 82°F after power is re-stored. You must re-program the thermostat ifthis happens.
If the word BAT is flashing in the display window,the battery is low and should be replaced with afresh 9 volt Energizer® alkaline battery. The
ENGAGE TWO UPPER GUIDES; PIVOT DOWN
Figure 10. Attaching thermostat to subbase
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battery will provide power for all functions. If theword BAT is displayed continuously (non-flash-ing), the thermostat is not being supplied with 24VAC power and is being powered by the batteryalone.
Use SYSTEMHEAT-OFF-COOL-AUTO
to turn thermostat OFF before
removing thermostat from the wall to re-place the battery.
2. You may adjust option switch #4 for automaticchangeover from heating to cooling (see OPER-ATING FEATURES ).
Other than and , the buttons are locatedbehind the thermostat door. To open the door, useyour fingernail in the indentation at the top center ofthe door. Pull the door out, then swing the door downon its hinges.
Following are brief descriptions of the display andthe thermostat buttons.
The Display
1 Continuously displays system mode (HEAT,EMER, OFF, COOL, AUTO, HOLD). Duringprogramming, the program period is displayed(MOR, DAY, EVE, NHT).
2 Alternately displays room temperature (F de-notes degrees Fahrenheit and C denotes de-grees Celsius) and time of day (A denotes AMtime and P denotes PM time).
3 Displays the setpoint temperature.
4 5 DAY indicates that the displayed program isthe weekday program. 2 DAY indicates that thedisplayed program is the weekend program.
5 The word BAT flashes on the display when the9 volt alkaline battery is weak and should be
CAUTION!
25
replaced. The word BAT will be displayed con-tinuously (non-flashing) when the thermostat isoperating on battery power only.
6 FAN is displayed when the blower is operat-ing continuously, regardless of heating or cool-
ing system cycling. FAN is displayed duringautomatic fan operation (when the blower cycleswith the heating or cooling system).
1 2 3
4 6 6
2 DAY 5 DAY
2
3
54
FAN FANBAT
5 DAY FAN
EMER.
AUX.
TIMEFWD
SYSTEMHEAT-OFF-COOL-AUTO
SETCLOCK
VIEWPRGM
HOLDTEMP
TIMEBACK
FANON - AUTO
SETDAY
RUNPRGM
ADVPRGM
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The Thermostat Buttons and Lights
7 Sets the system mode (HEATing, EMERgencybackup, OFF, COOL ing, or AUTOmaticchangeover [user selectable feature]).
8 Selects fan operation (see #6, previous page).This button is also used to program the fan to runcontinuously during a program period.
9 Runs display forward or backward through time,day, or anticipation settings during program-ming.
10 Used with TIMEFWD and TIME
BACK to set current time
and day of the week.
11 Used during programming to set the day of the
week. Also used with SETCLOCK to enter anticipa-
tion setting mode.
12 Used to initiate or review thermostat program-ming.
13 Used to start program operation after program-ming. Also used to return thermostat to programoperation after being in HOLD mode.
14 Used to manually override programming to holdat a selected temperature (when HOLD is dis-played).
15 Used to advance thermostat program to the nextprogram period (for example, from the MORprogram to the DAY program).
16 (Blue arrow) Lowers temperature setting (40°For 4°C minimum).
17 (Red arrow) Raises temperature setting (99°For 37°C maximum)
27
setpoint temperature — there is a 5 to 10minute startup delay on the first emergencycycle). AUX light indicates that the auxiliarysystem is operating.
18 EMER light indicates that the system is in theemergency mode (the heat pump compressoris off and the auxiliary system is maintaining
10 11 12 13 14 15
16 17 18
9
7
8
5 DAY FAN
EMER.
AUX.
TIMEFWD
SYSTEMHEAT-OFF-COOL-AUTO
SETCLOCK
VIEWPRGM
HOLDTEMP
TIMEBACK
FANON - AUTO
SETDAY
RUNPRGM
ADVPRGM
28
OPERATING FEATURES
Now that you are familiar with the thermostat displayand buttons, read the following information to learnabout the many features of the thermostat.
• COMPUTED ENERGY MANAGEMENT RE-COVERY (EMR) - The thermostat’s microcom-puter automatically calculates the time it willtake to change the temperature to the nextprogram setting. Then the thermostat will acti-vate the heating or cooling system to changethe temperature so that the desired tempera-ture is reached at the beginning of the nextprogram period. As an example of this feature,assume that you have programmed your ther-mostat to provide an overnight heating tem-perature of 62°F, and that during the next pro-gram period, beginning at 6:00 AM, you haveprogrammed a temperature of 70°F. The ther-mostat will automatically activate the heating
system at about 5:00 AM, so that the pro-grammed 70°F temperature is reached by about6:00 AM.
• AUTOMATIC CHANGEOVER — You can setthe thermostat to automatically switch the sys-tem from heating to cooling as needed. First,you must move option switch #4 (located on theback of the thermostat body) to the ON position,if it has not already been done. To do this, press
SYSTEMHEAT-OFF-COOL-AUTO
until thermostat is OFF. Then, remove
the thermostat body from the wall. Check theposition of switch #4 (the last switch on theright). If it is ON (up), simply put the thermostatback on the wall and restore 24 VAC power. Ifthe switch is OFF (down), use a pencil or smallscrewdriver to move the switch to the ON posi-tion (see figure at right). Leave the battery out ofthe thermostat for at least two minutes , to allowthe thermostat to reset itself. DO NOT MOVEANY OTHER OPTION SWITCH, as it may
29
affect thermostat operation. Replace the bat-tery, re-program the thermostat if necessary,put the thermostat back on the wall, and use
SYSTEMHEAT-OFF-COOL-AUTO
to set thermostat for desired opera-
tion. To set the thermostat for automatic
changeover after programming, press SYSTEMHEAT-OFF-COOL-AUTO
to set the thermostat to AUTO (the setpointdisplay is blank in the AUTO mode). The sys-tem will now automatically switch between heat-ing and cooling depending on the actual roomtemperature.
AUTOMATIC CHANGEOVER (ON)
Switch #1 set at installation (DO NOT CHANGE)Switch #2 set at installation (DO NOT CHANGE)Switch #3 set at installation (DO NOT CHANGE)Switch #4 ON
In the AUTO mode, the thermostat will not allow thetemperature separation between the highest heatsetting and the lowest cool setting to be less that 1°F.For example, if the highest heat setting is 76°F, thelowest cool setting cannot be below 77°F (seediagram at left).
ON
1 2 3 4
NOTE
79787776757473
COOLING TEMPERATURES
HEATING TEMPERATURES
DEAD BAND 1°F
30
AUTOMATIC CHANGEOVER (OFF)
Switch #1 set at installation (DO NOT CHANGE)Switch #2 set at installation (DO NOT CHANGE)Switch #3 set at installation (DO NOT CHANGE)Switch #4 OFF
• TWO HOUR TEMPERATURE OVERRIDE —Press or until the display shows thetemperature you want. The thermostat will over-ride current programming and keep the roomtemperature at the selected temperature for twohours. After two hours, the thermostat will auto-matically revert to the program.
• HOLD TEMPERATURE — The thermostat canhold any temperature within its range for anindefinite period, without reverting to the pro-
If the automatic changeover feature is enabled,
and you wish to disable it, press SYSTEMHEAT-OFF-COOL-AUTO
until
thermostat is OFF. Then, remove the thermo-stat body from the wall. Move the switch to theON position (see figure at right). Leave thebattery out of the thermostat for at least twominutes , to allow the thermostat to reset itself.DO NOT MOVE ANY OTHER OPTIONSWITCH, as it may affect thermostat operation.Replace the battery, re-program the thermostatif necessary, put the thermostat back on the
wall, and use SYSTEMHEAT-OFF-COOL-AUTO
to set the thermostat as
desired.
ON
1 2 3 4
31
gram. Press HOLDTEMP . HOLD will be displayed.
Then choose the desired hold temperature bypressing or . The thermostat willhold the room temperature at the selected set-
ting until you press HOLDTEMP to start program op-
eration again. This feature is ideal for energyconservation when the building is unoccupiedfor an extended period of time.
• °F/°C CONVERTIBILITY — Press TIMEFWD and
TIMEBACK at the same time until the temperature
display is in °C (Celsius). To display °F, repeatthe process.
• ADJUSTABLE HEATING AND COOLINGCYCLE TIMES (ANTICIPATION) — If the heat-ing/cooling system is turning on and off toooften (short cycles) or not often enough (long
cycles), you may want to adjust the anticipationsetting.
An anticipation setting of less than 10 maycause decreased compressor life.
To adjust HEAT anticipation, press SETCLOCK and
SETDAY at the same time. The display will show
HEAT 18. You may select any anticipationsetting from 4 to 40 (note that for add-on heatpump systems, a minimum anticipation of10 is recommended) . When you adjust antici-pation, increase or decrease the displayed num-ber by only one or two digits, then let the systemrun for a while to see if the adjustment issufficient. If the heat cycles are too short, press
TIMEFWD to increase the cycle time. If the heat
CAUTION!
32
cycles are too long, press TIMEBACK to decrease
the cycle time. To set COOL anticipation, pressSET
CLOCK and SETDAY at the same time again. The
display will show COOL 14 (factorypreprogrammed cooling anticipation). Use
TIMEFWD and TIME
BACK to adjust anticipation. To set
AUXILIARY heat anticipation (not applicable to
multi-stage use), press SETCLOCK and SET
DAY at the
same time again. The display will show AUX 8(factory preprogrammed auxiliary anticipation).
Use TIMEFWD and TIME
BACK to adjust anticipation.
Press RUNPRGM to return to your program.
• LOW BATTERY INDICATOR — The word BATwill flash on the display if the battery is low andshould be replaced. When BAT is displayed
continuously (non-flashing), 24 VAC power isnot being supplied and the thermostat is work-ing on battery power only.
• COMPRESSOR SHORT CYCLE PROTEC-TION — To protect your compressor from poten-tial damage due to rapid cycling, this thermostathas a built-in delay of 5 minutes between coolingcycles. The following may cause a time delay inCOOL or HEAT:
a) Return of power after a momentary poweroutage.
b) Pressing SYSTEMHEAT-OFF-COOL-AUTO
to change operating
modes.
c) Pressing or to create a call forCOOL or HEAT too soon after a previouscall.
During lockout in the COOL mode, the blowerwill operate, but compressor operation will bedelayed.
33
Auxiliary heat is functional during the compres-sor lockout and can be used as needed tomaintain room temperature.
• COMPRESSOR LONG TERM CYCLE PRO-TECTION — If your system begins to operatetoo soon after an extended power outage, thecompressor may be damaged due to crankcaseoil temperature change. This thermostat has abuilt-in time delay of one hour less than thepower loss (up to 12 hours). When power isrestored to the system, heaters in the systemwill begin to heat the crankcase oils. Thethermostat’s time delay will lock out the com-pressor to prevent its operation until the com-pressor oil is sufficiently warmed. During thelockout time period, the auxiliary heating sys-tem will operate to maintain setpoint tempera-ture.
For example, if a power outage of three hoursoccurs, the compressor will be locked out fortwo hours.
• SYSTEM INDICATOR LIGHTS — The lightson the upper right part of the thermostat indicatesystem operation (see PARTS OF THE THER-MOSTAT for specific descriptions of what eachlight indicates).
• PROGRAMMABLE BLOWER CONTROL —You may program the fan blower to run continu-ously during any given program period, regard-less of the cycling of the heating or coolingsystem. During programming, after entering thetime and temperature for the time period, press
FANON – AUTO until FAN is displayed. To override
constant fan, press FANON – AUTO until FAN is
displayed.
PR
OG
RA
MM
ING
34
PROGRAMMING YOUR THERMOSTAT
PR
OG
RA
MM
ING
PR
OG
RA
MM
ING
Now you are ready to program your thermostat. Thissection will help you plan and program your thermo-stat to meet your needs.For maximum comfort and efficiency, keep the fol-lowing guidelines in mind when planning your pro-gram.
• When heating (cooling) your building, programthe temperatures to be cooler (warmer) whenthe building is vacant or during periods of lowactivity.
• During early morning hours, the need for cool-ing is usually minimal.
PLANNING FOR YOUR NEEDS
This thermostat will store separate heating andcooling programs for five-day (weekday) and two-day (weekend) operation. Usually, the five-day pro-gram is set to run Monday through Friday, and the
two-day program is set to run Saturday and Sunday.However, you may choose any five consecutivedays to be your weekday program days (such asSunday through Thursday; in this case, your week-end program would run on Friday and Saturday).First, you should answer the following questions tohelp you decide what your needs are. If you areusing the thermostat for a commercial application (astore, office building, etc.), answer questions 1through 4. If you are using the thermostat in yourhome, answer questions 5 through 8. Keep in mindthat you should plan for both weekday and weekendprograms.FOR COMMERCIAL APPLICATIONS:1a.What time does the first person arrive at the
building in the morning?
35
b. What temperature should the building be at thistime? (heating? cooling?) These will be yourMOR (morning) temperature settings.
2a.What time do the building occupants reach amaximum activity level (using lights, equipment,meeting rooms, etc.)?
b. What temperature should the building be at thistime? These will be your DAY temperature set-tings.
3a.What time do the building occupants reach aminimum activity level (limited personnel in build-ing)? These will be your EVE (evening) tempera-ture settings.
b. What temperature should the building be at thistime?
4a.What time does the building become vacant?
b. What temperature should the building be at thistime? These will be your NHT (night) tempera-ture settings.
IN YOUR HOME:5a.What time does the first person get up in the
morning?
b. What temperature should the house be at thistime? These will be your MOR (morning) tem-perature settings.
6a.What time does the last person leave the housein the morning?
b. What temperature should the house be at thistime? These will be your DAY temperature set-tings.
7a.What time does the first person arrive home inthe evening?
b. What temperature should the house be at thistime? These will be your EVE (evening) tem-perature settings.
36
8a.What time does the last person go to bed atnight?
b. What temperature should the house be at thistime? These will be your NHT (night) tempera-ture settings.
Now look at the factory preprogrammed times andtemperatures shown below. If this program will suit
your needs, simply press RUNPRGM to begin running the
factory preset program.If you want to change the preprogrammed times andtemperatures, do the following.
To operate properly in the AUTO mode, there mustbe a minimum 1 °F separation between the highestheat temperature and the lowest cool temperature(see diagram below).
Determine the time periods and heating and coolingtemperatures for your weekday program. You mustprogram 4 periods for each day (MOR, DAY, EVE,and NHT). However, you may use the same heating
Heating Program for ALL days of the Week: Cooling Program for ALL Days of the Week:
PERIOD TIME TEMP PERIOD TIME TEMPMORDAYEVENHT
5:00 AM9:00 AM4:00 PM10:00 PM
70707064
MORDAYEVENHT
5:00 AM9:00 AM4:00 PM10:00 PM
78827878
NOTE
79787776757473
COOLING TEMPERATURES
HEATING TEMPERATURES
DEAD BAND 1°F
37
and cooling temperatures for consecutive time peri-ods. You can choose start times, heating tempera-tures, and cooling temperatures independently forboth weekday and weekend programs (for example,you may select 5:00 AM and 70° as the weekdayMOR heating start time and temperature, and choose7:00 AM and 76° as the weekday MOR cooling starttime and temperature). Use the table on the nextpage to plan your program time periods, and thetemperatures you want during each period. You mayalso want to look at the sample program table to getan idea of how the thermostat can be programmed.
ENTERING YOUR PROGRAM
Follow these steps to enter the heating and coolingprograms you have selected.
We recommend that you remove the thermostatfrom the wall for programming (especially for enter-ing cooling programming). A fresh 9 volt Energizer®
alkaline battery must be installed to perform off-wall
programming. BE SURE TO PRESS SYSTEMHEAT-OFF-COOL-AUTO
TO
TURN THERMOSTAT OFF BEFORE REATTACH-ING TO SUBBASE!You cannot program the thermostat with the SYS-TEM SWITCH in the AUTO position.(Instructions continue on page 40).
NOTE
38
WEEKDAY (5 DAY) WEEKEND (2 DAY)
StartTime Temperature
StartTime Temperature
MOR HEAT
DAY HEAT
EVE HEAT
NHT HEAT
MOR COOL
DAY COOL
EVE COOL
NHT COOL
Heating/Cooling Schedule Plan
39
WEEKDAY (5 DAY) WEEKEND (2 DAY)
StartTime Temperature
StartTime Temperature
MOR HEAT
DAY HEAT
EVE HEAT
NHT HEAT
MOR COOL
DAY COOL
EVE COOL
NHT COOL
SAMPLEHeating/Cooling Schedule Plan
5:30 AM
8:00 AM
5:00 PM
10:30 PM
6:30 AM
2:00 PM
5:00 PM
10:30 PM
68°
65°
70°
65°
76°
78°
72°
78°
7:00 AM
11:00 AM
6:00 PM
11:30 PM
7:00 AM
12:30 PM
6:00 PM
11:30 PM
68°
70°
70°
65°
76°
74°
72°
78°
40
Set Current Time and Day
1. Press SETCLOCK once. The display will show min-
utes only.
EXAMPLE:
2. Press and hold either TIMEFWD or TIME
BACK until you
reach the correct minutes.
3. Press SETCLOCK once. The display window will
show the hour only.
EXAMPLE:
4. Press and hold either TIMEFWD or TIME
BACK until you
reach the correct hour and AM/PM designation(AM begins at midnight; PM begins at noon).
5. Press SETDAY once. The display will show the day
of the week as an abbreviation (MO for Monday,TU for Tuesday, etc.).
6. Press and hold either TIMEFWD or TIME
BACK until you
reach the current day of the week.
7. Press RUNPRGM once. The display will show the
correct time and room temperature alternately.
Enter Heating Program
During programming, if you don’t press any buttonsfor 5 minutes, the thermostat will enter the HOLDmode and will maintain a constant temperature. Thedisplay will revert to the alternating time/tempera-ture display. To resume programming after this
happens, press VIEWPRGM until you are at the point
where you stopped programming. Then you maycontinue to enter your programs normally. If you
41
want to stop programming at any time, simply pressRUN
PRGM to resume program operation.
1. Press SYSTEMHEAT-OFF-COOL-AUTO
until HEAT is displayed.
2. Press VIEWPRGM once. 5 DAY (indicating weekday
program), and MOR, representing the morningheating period, will appear in the display. Alsodisplayed are the currently programmed starttime for the MOR period and the currently pro-grammed temperature.
EXAMPLE: 5 DAY
This display window shows that for the weekdayMOR period, the start time is 5:00 AM, and 64° isthe programmed temperature (this example re-flects factory preprogramming).
3. To change the displayed start time to your se-lected start time for weekday MOR heat pro-
gram, press TIMEFWD or TIME
BACK until your selected
time appears. The time will change in 15 minuteincrements.
4. Press or until you reach your se-lected weekday MOR heating temperature.
5. If you want the fan to run continuously during this
period, press FANON – AUTO until FAN is displayed.
6. Press VIEWPRGM . The currently programmed start
time and heating temperature for weekday DAYwill be displayed.
7. Repeat steps 3 through 5 to select the start timeand heating temperature for the weekday DAYprogram.
8. Repeat steps 3 through 7 for the weekday EVEand NHT heating programs.
42
9. After entering your weekday heating program,repeat steps 1 through 8 for your weekend pro-gramming (keep in mind that for weekend pro-gramming, the display should be changed from 5DAY to 2 DAY).
10.When you have completed entering your heating
program, press RUNPRGM .
Enter Cooling Program
If outside temperature is below 50 °F, werecommend that you remove the thermostatfrom the wall before proceeding with thefollowing steps to program cooling tem-peratures. Personal injury or property dam-age may occur due to air conditioner com-pressor slugging. A fresh 9 volt Energizer ®
alkaline battery must be installed to performoff-wall programming. Programming awayfrom the wall should prevent accidental com-pressor operation. BE SURE TO USE
SYSTEMHEAT-OFF-COOL-AUTO
TO TURN THERMOSTAT OFF BE-
FORE REATTACHING TO SUBBASE!
CAUTION!
43
1. Press SYSTEMHEAT-OFF-COOL-AUTO
until COOL is displayed.
2. Follow the procedure for entering your heatingprogram, using your selected cooling times andtemperatures.
CHECK YOUR PROGRAMMING
Follow these steps to check your thermostat pro-gramming one final time before beginning thermo-stat operation.
1. Press SYSTEMHEAT-OFF-COOL-AUTO
until HEAT is displayed.
2. Press and hold VIEWPRGM to view the heating period
times and temperatures in sequence for week-day, then weekend MOR, DAY, EVE, and NHTprogram periods.
3. Press RUNPRGM .
4. Press SYSTEMHEAT-OFF-COOL-AUTO
until COOL is displayed.
5. Repeat step 2 to check cooling temperatures.
6. Press RUNPRGM to begin program operation.
YOUR THERMOSTAT IS NOW COMPLETELYPROGRAMMED AND READY TO AUTOMATI-CALLY PROVIDE MAXIMUM COMFORT AND EF-FICIENCY!
Press SYSTEMHEAT-OFF-COOL-AUTO
until OFF is displayed. Reattach
thermostat to subbase. Then press SYSTEMHEAT-OFF-COOL-AUTO
to
select the operation mode you want (HEAT, COOL,
AUTO). Press FANON – AUTO until FAN is displayed
(automatic cycling).
44
QUESTIONS AND ANSWERS
1. How can I permanently change a part of myprogram?
Press VIEWPRGM until you reach the time/tempera-
ture schedule you want. Then press or
and TIMEFWD and TIME
BACK to change the pro-
gram. See PROGRAMMING YOUR THERMO-STAT.
2. How can I have no change in temperaturefrom one time period to another?
Simply select the same temperature for eachconsecutive time period. For example, you mayselect the same weekday EVE cooling tempera-ture as you did for weekday DAY, which meansthe temperature will not change when the EVEperiod begins. See PROGRAMMING YOURTHERMOSTAT.
3. How can I finish my programming if the dis-play has already changed to time/tempera-ture?
During programming, if no buttons are pressedfor five minutes, the thermostat will enter theHOLD mode and maintain a constant tempera-ture. The display will change to the time/tem-perature mode. To resume programming, press
VIEWPRGM until you return to the point where you
stopped programming. Then you may continueto program the thermostat normally. If you want
to stop programming at this point, press RUNPRGM to
start the normal program function. See PRO-GRAMMING YOUR THERMOSTAT .
45
4. What happens if the electricity goes off or ismanually shut off?
If you have not installed a 9 volt alkaline battery,the display will go blank and the program will belost in approximately one minute. When electric-ity is restored, the thermostat will maintain aheating temperature of 64°F and a cooling tem-perature of 82°F until you reenter your program.Setpoint temperature will not be displayed.
If a fresh 9 volt Energizer® alkaline battery isinstalled, the program will be maintained forabout one week with no 24 VAC power presentto the thermostat. See OPERATING YOURTHERMOSTAT.
5. Why can’t I program the thermostat in theAUTO mode?
The thermostat can only be programmed in theHEAT and COOL modes. See PROGRAMMINGYOUR THERMOSTAT.
6. What can cause the thermostat display tofreeze or go blank?
A completely blank display may indicate thatpower has been lost to the thermostat and thebackup battery is also dead. However, if there ispower to the thermostat and the display is blankor frozen, static discharge is probably the cause.
During periods of low humidity (especially duringcold weather), you may feel or see a sparkdischarge when you touch the thermostat. Thismay cause the program to be lost or the thermo-stat to display incorrectly. To correct this, removethe thermostat from the wall and disconnect thebattery. Wait about one minute, then re-connectthe battery. The thermostat will revert to thefactory preset program until you re-program thethermostat. If you don’t want to re-program the
thermostat immediately, press SYSTEMHEAT-OFF-COOL-AUTO
until
OFF is displayed and replace the thermostat on
46
the wall. Then press SYSTEMHEAT-OFF-COOL-AUTO
for desired sys-
tem operation, and press RUNPRGM to begin the
factory preset program. Or you may re-programthe thermostat, then replace it on the wall.
To prevent further static discharge problems,touch another object to release static build-upbefore touching the thermostat. See OPERAT-ING YOUR THERMOSTAT.
7. Why won’t the setpoint temperature go to thetemperature I want?
In the AUTO mode, the highest heating setpointtemperature you select must be at least 1°Flower than the lowest cooling setpoint tempera-ture you select (for example, if 70°F is yourlowest selected cooling temperature, you cannotselect a heating temperature any higher than69°F). If such a conflict exists, you must set thelowest cooling temperature higher in order to set
the heating temperature higher. To set a lowercooling temperature, you must select a lowerheating temperature. See PROGRAMMINGYOUR THERMOSTAT.
8. The display is flashing BAT. What does thismean?
The 9 volt battery installed in the thermostat islow and should be replaced with a fresh 9 voltEnergizer® alkaline battery. See OPERATINGYOUR THERMOSTAT.
9. The display shows a continuous (non-flash-ing) BAT. What does this mean?
The thermostat is not being supplied with 24 VACpower. The thermostat is operating on batterypower alone. See OPERATING YOUR THER-MOSTAT.
47
10.Why won’t the system turn on, even thoughthe thermostat display is functioning nor-mally?
Either the compressor lockout feature is in op-eration or the thermostat is not currently callingfor heat or cool. Wait about 5 minutes for thecompressor lockout to expire. If the system is stillnot running, read the cautionary statement be-low. Then, if conditions permit , use the or
buttons to move the temperature above orbelow the setpoint temperature. See OPERAT-ING YOUR THERMOSTAT.
If the outside temperature is below 50 °F, DONOT use or to move the tempera-ture above or below the setpoint tempera-ture. Property damage may result due tocompressor slugging.
11.Why doesn’t the temperature change at thetime I programmed?
There may be a number of causes for this situa-tion. The following are primary reasons.
• The EMR function is operating. The EMRfunction will automatically bring on the sys-tem automatically to bring the temperatureto the selected level by the beginning of thenext program period. See OPERATINGYOUR THERMOSTAT.
• You have programmed the incorrect day ortime. Check your programming (be sure thatthe times you programmed are correct AMor PM times). See PROGRAMMING YOURTHERMOSTAT.
• The thermostat is in the HOLD mode. PressRUN
PRGM to start program operation. See OP-
ERATING YOUR THERMOSTAT .
CAUTION!
48
• The compressor lockout feature is operat-ing; wait about 5 minutes for system to beginrunning. See OPERATING YOUR THER-MOSTAT.
12.Why does the blower fan keep running afterthe system has turned off?
• You have programmed the fan to run con-tinuously during this period. See PROGRAM-MING YOUR THERMOSTAT.
• The blower delay feature is operating. Thisenergy saving feature continues to blowconditioned air through the ducts after thesystem has turned off, rather than letting theair dissipate.
13.Why is the system turning on and off sofrequently (seldom)?
The anticipation setting is too low (high). Tochange anticipation settings, see OPERATINGYOUR THERMOSTAT.
14.Between heating and cooling seasons, I wantto turn my system off. Can I do this withoutaffecting my thermostat programming?
Any time you wish to turn your system off, simply
press SYSTEMHEAT-OFF-COOL-AUTO
until OFF is displayed. This will
not affect your thermostat’s programming in any
way. To turn the system back on, press SYSTEMHEAT-OFF-COOL-AUTO
until HEAT, COOL, etc. is displayed. The systemwill automatically begin operating according tothe current thermostat program, unless the ther-mostat is in the HOLD mode. See OPERATINGYOUR THERMOSTAT.
49
15. I live in an area where daylight savings time isobserved. How do I change the thermostatclock twice a year without affecting thermo-stat programming?
To change your clock, follow the instructions forsetting current time and day. See ENTERINGYOUR PROGRAM. Thermostat programming isnot affected when you change the clock.
17.Do I have to re-program my thermostat afterI change the battery?
When the thermostat is on the wall and thesystem has power, the thermostat is being pow-ered by a 24v AC source. If power is lost, or if thethermostat is removed from the wall, the pro-gram will be retained for approximately oneminute if there is no battery installed or if theinstalled battery is dead. If you are changing thebattery after seeing a flashing BAT on the dis-play, the installed battery may be dead. If youremove the old battery and install a fresh one
within one minute, you may not lose your thermo-stat programming. After installing a new battery,follow the procedures in CHECK YOUR PRO-GRAMMING to determine whether your pro-gramming was maintained. If the thermostat
maintains programming, press SYSTEMHEAT-OFF-COOL-AUTO
until
OFF is displayed, put the thermostat back on the
wall, press SYSTEMHEAT-OFF-COOL-AUTO
to select the operating mode
you want, then press RUNPRGM to start program
operation. If the program is lost, re-program thethermostat. See PROGRAMMING YOUR THER-MOSTAT.
50
NOTES
51
NOTES
Part No. 37-5414A
9513
If you need further information about this product, please write to
White-Rodgers Division, Emerson Electric Co.9797 Reavis RoadSt. Louis, MO 63123-5398Attn: Technical Service Department