White Rodgers 1F86ST 0471 Thermostat User Manual

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80 Series Thermostat with

Automatic Heat/Cool Changeover Option

Single Stage or Heat Pump

Installation and Operating Instructions for Model:

Save these instructions for future use!

Model

Programming Choices

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS

CAREFULLYBEFOREINSTALLINGOROPERATINGTHIS

CONTROL COULD CAUSE PERSONAL INJURY AND/OR

PROPERTY DAMAGE.

5/2 Day

5/1/1 Day

Non-Programmable

1F80ST-0471

1F86ST-0471

Non-Programmable

APPLICATIONS

1F80ST-0471 Thermostat

with Spanish Display

THERMOSTAT APPLICATION GUIDE

Description

Gas or Oil Heat

Yes

Electric Furnace

Yes

Heat Pump (No Aux. or Emergency Heat)

Heat Pump (with Aux. or Emergency Heat)

Systems with up to 3 Stages Heat, 2 Stages Cool

Heat Only Systems

Yes

Millivolt Heat Only Systems – Floor or Wall Furnaces

Cool Only Systems

Hydronic (Hot Water) Zone Heat – 2 Wires

Hydronic (Hot Water) Zone Heat – 3 Wires

SPECIFICATIONS

Electrical Rating:

Battery Power. . . . . . . . . . . . . . . . . . . . . . . . . . mV to 30 VAC, NEC Class II, 50/60 Hz or DC

Input-Hardwire . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 VAC

Terminal Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 A per terminal, 1.5A maximum all terminals combined

Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45° to 90°F (7° to 32°C)

Differential (Single Stage) . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F (adjustable)

Differential (Heat Pump) . . . . . . . . . . . . . . . . . . . . . Heat 1.2°F; Cool 1.2°F (adjustable)

Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . 32° to +105°F (0° to +41°C)

Operating Humidity . . . . . . . . . . . . . . . . . . . . . . . . . 90% non-condensing max.

Shipping Temperature Range . . . . . . . . . . . . . . . . . -40° to +150°F (-40° to +65°C)

Dimensions Thermostat. . . . . . . . . . . . . . . . . . . . . . 3.4"H x 4.4"W x 1.3"D

ATTENTION: MERCURY NOTICE

This product does not contain mercury. However, this

product may replace a product that contains mercury.

CAUTION

To prevent electrical shock and/or equipment damage,

disconnect electric power to system at main fuse or circuit

breaker box until installation is complete.

Mercury and products containing mercury must not be

discarded in household trash. Do not touch any spilled

mercury. Wearing non-absorbent gloves, clean up any

spilled mercury and place in a sealed container. For proper

disposal of a product containing mercury or a sealed

container of spilled mercury, place it in a suitable shipping

container. Refer to www.white-rodgers.com for location to

send product containing mercury.

Index

Page

Installation

Wiring Connections

Thermostat Quick Reference

Installer Conﬁguration Menu

Operating Your Thermostat

Programming

Troubleshooting

PART NO. 37-6952A

www.white-rodgers.com

0827

INSTALLATION

Batteries

WARNING

2 "AA" alkaline batteries are included in the thermostat. To in-

stall the batteries, pull the battery door as shown by the arrow

and lift open. Using the polarity indicated inside the battery

door, insert the batteries. To close the battery door, swing the

door down while pulling in the direction of arrow. Once fully

down, snap the door back into position.

Thermostat installation and all components of the control

system shall conform to Class II circuits per the NEC

code.

Remove Old Thermostat

To replace the batteries, set system to OFF, following the

instructions above.

A standard heat/cool thermostat consists of three basic parts:

1. The cover, which may be either a snap-on or hinge type.

2. The base, which is removed by loosening all captive

screws.

Figure 1 – Battery door shown open

3. The switching subbase, which is removed by unscrewing

the mounting screws that hold it on the wall or adapter

plate. Before removing wires from old thermostat, label

each wire with the terminal designation from which it was

attached. Disconnect the wires from the old thermostat one

at a time. Do not let wires fall back into the wall.

“AA” Alkaline Batteries

Installing New Thermostat

1. Pull the thermostat body off the thermostat base. Forcing

or prying on the thermostat will cause damage to the unit.

Thermostat can be powered by system AC power or Battery.

is displayed, the thermostat is battery powered. If

is not displayed, thermostat is system powered with op-

tional battery back-up. When battery power remaining is ap-

proximately half, the will be displayed. When "Cambiar

" is displayed, install fresh “AA” alkaline batteries imme-

diately. For best results, replace all batteries with a premium

brand alkaline battery such as Duracell® or Energizer®. We

recommend replacing batteries every 2 years. If the home is

going to be unoccupied for an extended

2. Place base over hole in wall and mark mounting hole

locations on wall using base as a template.

3. Move base out of the way. Drill mounting holes. If you

are using existing mounting holes and the holes drilled

are too large and do not allow you to tighten base snugly,

use plastic screw anchors to secure the base.

4. Fasten base snugly to wall using mounting holes shown

in Figure 2 and two mounting screws. Leveling is for

appearance only and will not affect thermostat operation.

period (over 3 months) and

is displayed, the batter-

ies should be replaced before leaving. When less than two

months of battery life remain, the setpoint temperature will

offset by 10 degrees (10 degrees cooler in Frio mode / 10

degrees warmer in Frio mode). If offset occurs, the normal

5. Connect wires to terminal block on base.

6. Push excess wire into wall and plug hole with a ﬁre resis-

tant material (such as ﬁberglass insulation) to prevent

drafts from affecting thermostat operation.

setpoint can be manually reset with

. Another

7. Carefully line the thermostat up with the base and snap

into place.

offset will occur within two days if batteries are not replaced.

Figure 2 – Thermostat base and rear view of thermostat

SS/HP Switch

(Conventional or Heat Pump Selection)

The SS/HP switch is factory set to the SS position. In this posi-

tion, thermostat is conﬁgured as conventional single stage. If

you have a single stage heat pump system, switch SS/HP to

HP position (see ﬁgure 2).

Mounting

Hole

Mounting

Hole

Place Level

across

Mounting Tabs

(for appearance only)

Place Level

across

Mounting Tabs

(for appearance only)

Gas/Elec Switch (Fan Option)

The GAS/ELEC switch is factory set to the GAS position. In

this position, the thermostat will not power the circulator fan on

a call for heat, but will power the circulator on a call for cool.

If your system requires that the thermostat power the circula-

tor fan on a call for heat, this switch should be set to the ELEC

position. Typically, gas and oil heating systems do not require

the thermostat to power the circulator fan during a call for heat.

If your heat is gas or oil, the switch should be set to the GAS

position.

GAS

ELEC

SS/HP

Switch

When the thermostat is conﬁgured for Heat Pump, the thermo-

stat will always power the circulator fan on a call for heat in the

HEAT mode.

GAS/ELEC Switch

WIRING CONNECTIONS

Refer to equipment manufacturers' instructions for speciﬁc system wiring information. After wiring, see CONFIGURATION

section for proper thermostat conﬁguration. Refer to 37-6754 for 1F80-0471/1F86-0471 wiring diagram speciﬁcations.

TERMINAL DESIGNATION DESCRIPTIONS

Designation Description

Terminal

O/B.................(SS) Power closed for 3 wire zone

(HP) Changeover valve for heat pump

RH...................Power for Heating

RC...................Power for Cooling

Compressor Relay

Heat Relay

Y......................

W....................

G.....................

C.....................Common wire from secondary side

of cooling system transformer or

Fan Relay

heat only system transformer

THERMOSTAT QUICK REFERENCE

Figure 4 – Home Screen Display

Home Screen Description

Room

Temperature

Time

Setting

Day of Week

Temperature

Displays the power level of the

2 “AA” batteries:

indicates good power level.

indicates batteries at about

Temperature Up/Down

half power. “Cambiar

”

(Change ) indicates batteries

RETENER

Button

are low and should be replaced

with 2 new premium brand “AA”

Alkaline batteries.

SISTEMA

Indicator

SISTEMA

Button

VENT

Indicator

VENT

Button

MENU/PROGRAMA/ARRANCAR

Button

Figure 5 – Programming & Conﬁguration Items

Programming and Conﬁguration Items

Flame icon ( ) is displayed when the system is in

CALOR mode. Snowﬂake icon ( ) is displayed when

the system is in FRIO mode.

The word RETENER is displayed when the thermostat

is in the RETENER (Hold) mode. Temporal RETENER

is displayed when the thermostat is in a Temporal

RETENER (Temporary Hold) mode.

Displays "Cambiar Frio" (Change Filter) when the

system has run for the programmed ﬁlter time period

as a reminder to change or clean your ﬁlter.

Displays "Ajuste" (Set) for setpoint when in Run

Program mode.

Displays System Mode (Calor, Frio, Auto, Off) or Hora

(Time) in menu mode.

Displays Fan Mode (On, Auto) or "Arrancar" (Run) in

Menu mode of "Ahorra" (Saving) in Cool Savings^TM

Mode.

Displays "Bomba de Calor" (Heat Pump) when

system is conﬁgured as Heat Pump thermostat.

Displays "Retener" (Hold) in programmable mode

when in "Retener" (Hold) mode. Displays Light Bulb

in non-programmable mode.

Displays "Arrancar Programa" (Run Schedule),

"Programa" (Schedule), or "Menu".

Displays "Guardar" (Save) when Cool Savings^TMis

working.

INSTALLER/CONFIGURATION MENU

Press the Menu button for at least 5 seconds. The display will show item #1 in the table below. Press Menu to advance to the

next menu item. Press

to change a menu item. Shaded items are not available on 1F86.

INSTALLER/CONFIGURATION MENU

Press

REF

PRESS

BUTTON

DISPLAYED

(FACTORY DEFAULT)

select from listed options

HP SS

COMMENTS

On (Frio O)

Calor b On

Reversing Valve Output (SS/HP switch must

be in the Heat Pump HP position)

Selectable Programs Per Week

(For programmable thermostat only)

Select Frio Ahorra (Cool Savings) on or off

P (2)

P 3, P 0

Frio Ahorra CE

(OFF)

Frio Ahorra CE On

Frio Ahorra (3)

E (On)

6, 5, 4, 2, 1

E OFF

Selects Frio Ahorra value 1 (low) to 6 (high)

Selects Energy Management Recovery (EMR)

on or off

Adjustable Anticipation (Calor) (only when

SS/HP switch is at the SS position)

Adjustable Anticipation (Frio) (only when

SS/HP switch is at the SS position)

CR Calor

(ME)

CR Frio

(AL)

AL, bA

CR Bomba de Calor

(AL)

Adjustable Anticipation (Bomba de Calor)

(only when SS/HP switch is at the HP position)

Cd (OFF)

Auto Calor

Frio Off

Cd On

Compressor Lockout Time

System Mode Conﬁguration

with Automatic Changeover

Calor Frio Off,

CalorOffwithVenticon,

Calor Off without Vent

icon, Frio Off,

Auto Off

L (On)

L OFF

Selects Display Light on or off

1 AL, 2 AL, 3 AL, 4

AL,

Adjustable Ambient Temperature Display

1 bA, 2 bA, 3 bA, 4 bA

10 10

11 11

Selects Fahrenheit/Celsius Temperature

Display

Cambiar Filtro (OFF)

Cambiar Filtro 200 h

Cambiar Filtro On

Selects Filter Change-out Indicator

25 h to 1975 h in

25-hour increment

When on, selects time in 25 hour increments

12 12

Arrancar

Returns to Normal Operation

of adjustment. Default value is 3 (3°). In normal operation

"Ahorro" will appear under "Vent"

1. Select Reversing Valve Output (SS/HP switch must

be set at HP, omitted if SS/HP switch is SS Position)

– The O/B option is factory set at "O" position. This will

accommodate the majority of heat pump applications,

which require the changeover relay to be energized in

FRIO. If the thermostat you are replacing or the heat pump

being installed with this thermostat requires a "B" terminal,

to energize the changeover relay in CALOR, the O/B

option should be set at "B" position.

Cool Savings is an optional energy saving feature that

can reduce your cooling costs. It is based on the principal

that lower indoor humidity makes a slightly higher

temperature feel more comfortable. Frio Ahorro operates

during periods of high demand which normally occur

on the hottest summer days when the cooling system

may run for hours to reach the thermostat setting. Long

cooling run times also lower the indoor humidity. Frio

Ahorro very slowly adjusts the setpoint temperature to

make the setpoint closer to the displayed temperature, to

a maximum number of degrees selected. Adjusting the

setpoint temperature over a long cooling run time allows

the system to reach your set temperature and turn off.

The room temperature will actually be higher than the

thermostat displays, but the reduction in humidity will allow

comfort at the slightly higher temperature. When Frio

Ahorro is making adjustments, "Save" will show next to

the setpoint temperature and the room temperature may

vary within the adjustment range selected.

2. Program Options 1F80 only – This control can be

conﬁgured for 5/2 day or 5/1/1 day programming or non-

programming mode. The default setting is P2, indicating

5/2 day programming. The programs per week can be

toggled to P3 or P0 by pressing the

keys. A

selection of 0 Days for non-programmable will eliminate

the need for EMR, and that step in the menu will be

skipped.

3. Select Frio Ahorro (Cool Savings™) and value

– Selects the Frio Ahorro feature On or OFF. If selected

On, press MENU to select the amount of adjustment

for the feature in Frio mode with 1 (1°) being the least

amount of adjustment and 6 (6°) being the most amount

If this feature is selected OFF, no change will occur when

the cooling system is continually running during periods of

high demand.

INSTALLER/CONFIGURATION MENU

4. Energy Management Recovery: (this step is skipped if

9. System Mode Conﬁguration – This thermostat is

conﬁgured for Calor and Frio with Auto changeover

(SISTEMA switch with Frio Off Calor Auto) default. It can

also be conﬁgured for Calor and Frio (Frio Off Calor),

Calor only with fan (Off Calor), Calor only without fan,

Auto only (Auto Off), and Frio only (Frio Off).

conﬁgured to be non-programmable).

Energy Management Recovery (E) On enables the

thermostat to start heating or cooling early to make the

building temperature reach the program setpoint at the

time you specify. Heating will start 5 minutes early for

every 1° of temperature required to reach setpoint.

10.Select Backlight Display – The display backlight

improves display contrast in low lighting conditions. When

the "C" terminal is powered, selecting backlight L ON will

keep the light on continuously. Select backlight OFF will

keep the light on momentarily after any key is pressed.

When the "C" terminal is not powered, the light will

be on momentarily after any key is pressed no matter

whether the backlight is selected ON or OFF.

Example: If E On is selected and have your heating

programmed to 65° at night and 70° at 7 AM. If the

building temperature is 65°, the difference between

65° and 70° is 5°. Allowing 5 minutes per degree, the

thermostat setpoint will change to 70° at 6:35 AM. Cooling

allows more time per degree, because it takes longer to

reach set temperature.

11.SelectTemperature Display Adjustment 4 LO to 4 HI

Allows you to adjust the room temperature display up

to 4° higher or lower.Your thermostat was accurately

calibrated at the factory, but you have the option to change

the display temperature to match your previous thermo

stat. The current or adjusted room temperature will be

displayed on the left side of the display.

5, 6 & 7. Cycle Rate Selection – The factory default settings

with SS/HP switch in SS position for Heat is medium

cycle (ME) and Cool is fast cycle (AL). For Heat Pump

(HP), the default setting is fast cycle (AL).

To change cycle rate, press the

key.

Cycle rate differentials for different settings are:

MODE

Fast

Medium

Slow

12.Select F° or C° Readout – Changes the display readout

to Centigrade or Fahrenheit as required.

Heat (SS)

0.4°F

1.2°F

0.6°F

1.8°F

1.7°F

13.Select Filter Replacement Reminder and Set Run Time

Select the "Cambiar Filtro" (Change Filter) reminder On

or OFF. If selected On, press MENU to select the time

period from 25 to 1975 hours in 25 hours increments.

In a typical system, 200 hours (default) of run time is

approximately 30 days. After the selected time of blower

operation, the thermostat will display "Cambiar Filtro"

(Change Filter) as a reminder to change or clean your air

ﬁlter. When "Cambiar Filtro" (Change Filter) is displayed,

press MENU button to clear the display and restart the

time to the next ﬁlter change.

Cool (SS)

–

Heat Pump (HP)

8. Select Compressor Lockout CL OFF or ON – Selecting

CL ON will cause the thermostat to wait 5 minutes

between cooling cycles. This is intended to help protect

the compressor from short cycling. Some newer

compressors already have a time delay built in and do not

require this feature.Your compressor manufacturer can tell

you if the lockout feature is already present in their system.

When the thermostat compressor time delay occurs, it

will ﬂash the setpoint for up to ﬁve minutes.

OPERATINGYOUR THERMOSTAT

IMPORTANT!

Choose the Vent Setting (Auto or On)

Set the VENT Switch to Auto or On.

Manual Operation (Bypassing the Program)

Programmable Thermostats

Press

and the Retener button and adjust the

Vent Auto is the most commonly selected setting and runs

temperature wherever you like. This will override the program.

The Retener feature bypasses the program and allows you

to adjust the temperature manually, as needed. Whatever

temperature you set in Retener will be maintained 24 hours

a day, until you manually change the temperature or press

Arrancar Programa (Run Schedule) to cancel Retener and

resume the programmed schedule.

the fan only when the heating or cooling system is on.

Vent On runs the fan continuously for increased air circulation

or to allow additional air cleaning.

Choose the System Setting

(Calor, Off, Frio, Auto)

Press the SISTEMA button to select:

Program Override (Temporary Override)

Calor: Thermostat controls only the heating system.

Off: Heating and Cooling systems are off.

Frio: Thermostat controls only the cooling system.

Press

buttons to adjust the temperature. This will

override the temperature setting until the next programmed

time. To cancel the temporary setting at any time and return

to the program, press Arrancar Programa. If the SISTEMA

button is pressed to select Auto the thermostat will change to

Heat or Cool, whichever ran last. If it switches to heat but you

want cool, or it changes to cool but you want heat, press both

Auto: Auto Changeover is used in areas where both heating

and cooling may be required on the same day. Auto allows

the thermostat to automatically select heating or cooling

depending on the indoor temperature and the selected heat

and cool temperatures. When using Auto, be sure to set the

Cooling temperatures more than 1° Fahrenheit higher than

the heating temperature.

and

mode.

buttons simultaneously to change to the other

Manual Operation for Non-Programmable Ther-

mostats Mode

Press the SISTEMA button to select Heat or Cool and use

the

buttons to adjust the temperature to your

desired setting. After selecting your desired settings you can

also press the SISTEMA button to select Auto to allow

the thermostat to automatically change between Heat and

Cool.

PROGRAMMING (For Programmable Model Only)

5. Press Hora button, time will ﬂash.

6. Press or key to adjust the start time for the

1st period.

Set Current Time and Day

1. Press Menu and then Hora button once. The display

will show the hour only.

7. The time will change in 15 minute increments.

2. Press and hold either the

key until you reach

the correct hour and AM/PM designation (AM begins at

midnight, PM begins at noon).

8. After you have set the time and the temperature for

the period to begin, press Schedule to advance to the

next program period.

3. Press Hora once again. The display window will show

the minutes only.

9. Repeat steps 2 through 8 until all of the program times

and temperatures are set for all program periods on

that day.

4. Press and hold either the

the correct minutes.

key until you reach

10.Press Programa to the next day and repeat steps 2

5. Press Hora once again. The display will show the day

through 9.

of the week.

11.When programming is complete and all of the times and

temperatures match your desired heating schedule, press

Run Schedule. The thermostat will now run your program.

6. Press the

of the week.

key until you reach the current day

7. Press Arrancar to exit the Time mode.

Enter the Cooling Program

1. Press SISTEMA button to select "Frio" in the system

Enter the Heating Program

1. Press SISTEMA button to select "Calor" in the system

switch area indicating the active mode being programmed.

2. Follow Enter Heating Program instructions for entering

2. Press the Menu button and then press Programa.

cooling times and temperatures.

3. The top of the display will show the day(s) being

programmed. The time and temperature (ﬂashing) are also

displayed. "1" will also be displayed to indicate the period.

4. Press

key to change the temperature to your

selected temperature for the 1st heating period.

PROGRAMMING (For Programmable Model Only)

Energy Saving Factory Pre-Program

The 1F80ST-0471 thermostats are programmed with the energy saving settings shown in the table below for all days of the

week. If this program suits your needs, simply set the thermostat clock and press the Arrancar button.

The table below shows the factory set heating and cooling schedule for all days of the week.

Wake Up

(Period 1)

Leave For Work

(Period 2)

Return Home

(Period 3)

Go To Bed

(Period 4)

Heating

Program

6:00 AM

70°F

75°F

8:00 AM

62°F

83°F

5:00 PM

70°F

75°F

10:00 PM

62°F

78°F

Cooling

Program

PlanningYour Program – Important

The Heating and Cooling Program schedules below allow you to pencil in your own program times and temperatures.

The 1F80ST-0471 comes conﬁgured for 5/2 day programming and can also be conﬁgured for 5+1+1 programming (see

conﬁguration section).

Factory settings are listed on Monday through Friday, Saturday and Sunday. If you are re-programming a 5/2 day schedule,

pencil in your own times and temperatures directly below the factory times and temperatures.

If you are re-programming a 5+1+1 ﬁll in all lines with the times and temperatures you want.

Keep the following guidelines in mind when planning your program.

•

In Heating, lower temperatures will save energy.

In Cooling, higher temperatures will save energy.

If you plan on using Auto Changeover, do not program the heating higher than the cooling.

Worksheet for Re-Programming 5/2 Day and 5+1+1 Day Program

Heating

Program

Wake Up

(Period 1)

Leave For Work

(Period 2)

Return Home

(Period 3)

Go To Bed

(Period 4)

6:00 AM

70°F

8:00 AM

62°F

5:00 PM

70°F

10:00 PM

62°F

Mo-Fr

Sat-Sun

or Sat

6:00 AM

8:00 AM

5:00 PM

10:00 PM

Sun

5+1+1 only

Cooling

Program

Wake Up

(Period 1)

Leave For Work

(Period 2)

Return Home

(Period 3)

Go To Bed

(Period 4)

6:00 AM

75°F

8:00 AM

83°F

5:00 PM

75°F

10:00 PM

78°F

Mo-Fr

Sat-Sun

or Sat

6:00 AM

8:00 AM

5:00 PM

10:00 PM

Sun

5+1+1 only

TROUBLESHOOTING

Reset Operation

Note: When thermostat is reset, installer conﬁguration menu settings and programming will reset to factory settings.

If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermo-

stat by removing the wires from terminals R and C (do not short them together) and removing batteries for 2 minutes. After

resetting the thermostat, replace the wires and batteries. If the thermostat has been reset and still does not function correctly

contact your heating/cooling service person or place of purchase.

Note: Be sure to review the installer conﬁguration menu settings.

To reset the programming, clock and conﬁguration settings, press

and

and the VENT button simultaneously. The

thermostat should go blank and then all segments will be displayed momentarily.

Symptom

Possible Cause

Corrective Action

No Heat/No Cool/No 1. Blown fuse or tripped circuit breaker.

Replace fuse or reset breaker.

Turn switch to ON.

Replace door panel in proper position to engage safety interlock

or door switch.

2. Furnace power switch to OFF.

Fan (common

problems)

3. Furnace blower compartment door or

panel loose or not properly installed.

4. Loose connection to thermostat or system.

Tighten connections.

No Heat

1. Pilot light not lit.

Re-light pilot.

2. Furnace Lock-Out Condition. Heat

may also be intermittent.

Many furnaces have safety devices that shut down when a lock-

out condition occurs. If the heat works intermittently contact the

furnace manufacturer or local HVAC service person for assis-

tance.

Diagnostic: Set SISTEMA Switch to Calor and raise the set-

point above room temperature. Within a few seconds the thermo-

stat should make a soft click sound. This sound usually indicates

the thermostat is operating properly. If the thermostat does not

click, try the reset operation listed above. If the thermostat does

not click after being reset contact your heating and cooling

service person or place of purchase for a replacement. If the

thermostat clicks, contact the furnace manufacturer or a HVAC

service person to verify the heating is operating correctly.

3. Heating system requires service or

thermostat requires replacement.

No Cool

1. Cooling system requires service or

thermostat requires replacement.

Same as diagnostic for No Heat condition except set the thermo-

stat to Frio and lower the setpoint below the room temperature.

There may be up to a ﬁve minute delay before the thermostat

clicks in Cooling.

Heat, Cool or Fan

Runs Constantly

1. Possible short in wiring.

Check each wire connection to verify they are not shorted or

touching together. No bare wire should stick out from under ter-

minal block. Try resetting the thermostat as described above. If

the condition persists the manufacturer of your system or service

person can instruct you on how to test the Heat/Cool system for

correct operation. If the system operates correctly, replace the

thermostat.

2. Possible short in thermostat.

3. Possible short in heat/cool/fan system.

4. VENT Switch set to VENT ON.

Thermostat Setting &

ThermostatThermometer

Disagree

1. Thermostat thermometer setting

requires adjustment.

The thermometer can be adjusted +/- 4 degrees. See Tempera-

ture Display Adjustment in the Conﬁguration Menu section.

Furnace

1. The location of the thermostat and/or

the size of the Heating System may

be inﬂuencing the cycle rate.

Digital thermostats provide precise control and cycle

faster than older mechanical models. The system turns

on and off more frequently but runs for a shorter time so

there is no increase in energy use. If you would like an in-

creased cycle time, choose bA for slow cycle in the Con-

ﬁguration menu, step 6 (heat), 7 (cool) or 8 (heat pump).

If an acceptable cycle rate is not achieved, contact a local

service person for additional suggestions.

(Air Conditioner)

Cycles Too Fast or Too

Slow (narrow or wide

temperature swing)

HOMEOWNER HELP LINE: 1-800-284-2925

White-Rodgers is a division

of Emerson Electric Co.

The Emerson logo is a

trademark and service mark

of Emerson Electric Co.

St. Louis, Missouri

www.white-rodgers.com

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