White Rodgers 1F85-277 User Manual

1F85-2771F85-277

1F85-277

1F85-2771F85-277

Heating & Air Conditioning

7 Day/5-1-1 Programmable/Non-programmable, Auto

Changeover, Multi-Stage/Heat Pump Thermostat

INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS

Operator: Save these instructions for future use!Operator: Save these instructions for future use!

Operator: Save these instructions for future use!

Operator: Save these instructions for future use!Operator: Save these instructions for future use!

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFOREFAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFOREFAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONALINSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL

INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL

INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONALINSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.INJURY AND/OR PROPERTY DAMAGE.

INJURY AND/OR PROPERTY DAMAGE.

INJURY AND/OR PROPERTY DAMAGE.INJURY AND/OR PROPERTY DAMAGE.

PREPARATIONSPREPARATIONS

PREPARATIONS

PREPARATIONSPREPARATIONS

YOUR THERMOSTAT REPLACESYOUR THERMOSTAT REPLACES

YOUR THERMOSTAT REPLACES

YOUR THERMOSTAT REPLACESYOUR THERMOSTAT REPLACES

DescriptionDescription

Description

DescriptionDescription
Heat Pump (No Aux. or Emergency Heat) Yes
Heat Pump (with Aux. or Emergency Heat) Yes
Standard Heat & Cooling Systems Yes
Two Stage Heat & Two Stage Cool Yes
Standard Heat Only Systems Yes
Millivolt Heat Only Systems – Floor or Wall Furnaces Yes
Standard Central Air Conditioning Yes
Gas or Oil Heat Yes
Electric Furnace Yes
Hydronic (Hot Water) Zone Heat – 2 Wires Yes
Hydronic (Hot Water) Zone Heat – 3 Wires No

1F85-2771F85-277

1F85-277

1F85-2771F85-277

Assemble tools required as shown below.

HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED

REMOVING OLD THERMOSTATREMOVING OLD THERMOSTAT

REMOVING OLD THERMOSTAT

REMOVING OLD THERMOSTATREMOVING OLD THERMOSTAT

FLAT BLADE SCREWDRIVER

WIRE CUTTER/STRIPPER

CAUTION

!

To prevent electrical shock and/or equipment dam-To prevent electrical shock and/or equipment dam-

To prevent electrical shock and/or equipment dam-

To prevent electrical shock and/or equipment dam-To prevent electrical shock and/or equipment dam­age, disconnect electric power to system at main fuseage, disconnect electric power to system at main fuse

age, disconnect electric power to system at main fuse

age, disconnect electric power to system at main fuseage, disconnect electric power to system at main fuse
or circuit breaker box until installation is complete.or circuit breaker box until installation is complete.

or circuit breaker box until installation is complete.

or circuit breaker box until installation is complete.or circuit breaker box until installation is complete.

Before removing wires from old thermostat's switching sub-

label each wirelabel each wire

base,

label each wire with the terminal designation it was

label each wirelabel each wire

removed from.

1. Shut off electricity at the main fuse box until installation is
complete. Ensure that electrical power is disconnected.

Remove Old ThermostatRemove Old Thermostat

2.

Remove Old Thermostat: A standard heat/cool

Remove Old ThermostatRemove Old Thermostat
thermostat consists of three basic parts:
a. The cover, which may be either a snap-on or

hinge type.

b. The base, which is removed by loosening all

captive screws.

c. The switching subbase, which is removed by

unscrewing the mounting screws that hold it on
the wall or adaptor plate.

3. Remove the front cover of the old thermostat.
wireswires

still attachedstill attached

wires

still attached, remove wall plate from the wall. If

wireswires

still attachedstill attached
the old thermostat has a wall mounting plate, remove the
thermostat and the wall mounting plate as an assembly.

4. Identify each wire attached to the old thermostat.

5. Disconnect the wires from the old thermostat one at a
DO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THE

time.

DO NOT LET WIRES FALL BACK INTO THE

DO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THE

WALLWALL

WALL.

WALLWALL

6. Install new thermostat using the following procedures.

WithWith

With

WithWith

Y2

C
R

E/W1

Y1

Mounting
Hole

Figure 1 – Thermostat baseFigure 1 – Thermostat base

Figure 1 – Thermostat base

Figure 1 – Thermostat baseFigure 1 – Thermostat base

ATTENTION!ATTENTION!

ATTENTION! This product does not contain mercury. How-

ATTENTION!ATTENTION!
ever, this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do
touch any spilled mercury. Wearing non-absorbent gloves,
clean up the spilled mercury and place into a container which
can be sealed. If a cell becomes damaged, the unit should be
discarded.

Mercury must not be discarded in household trash. When the
unit this product is replacing is to be discarded, place in a
suitable container and return to White-Rodgers at 2895 Harrison
Street, Batesville, AR 72501 for proper disposal.

OBLW2G

ELEC. GAS

AUTOON

Mounting
Hole

Elec-Gas
Switch

notnot

not

notnot

White-Rodgers is a division

of Emerson Electric Co.

www.white-rodgers.com

PART NO. 37-6560APART NO. 37-6560A

PART NO. 37-6560A

PART NO. 37-6560APART NO. 37-6560A

0430

MOUNTING AND WIRINGMOUNTING AND WIRING

MOUNTING AND WIRING

MOUNTING AND WIRINGMOUNTING AND WIRING

CAUTION

WARNING

!

Do not use on circuits exceeding specified voltage.Do not use on circuits exceeding specified voltage.

Do not use on circuits exceeding specified voltage.

Do not use on circuits exceeding specified voltage.Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could causeHigher voltage will damage control and could cause

Higher voltage will damage control and could cause

Higher voltage will damage control and could causeHigher voltage will damage control and could cause
shock or fire hazard.shock or fire hazard.

shock or fire hazard.

shock or fire hazard.shock or fire hazard.

Do not short out terminals on gas valve or primaryDo not short out terminals on gas valve or primary

Do not short out terminals on gas valve or primary

Do not short out terminals on gas valve or primaryDo not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will damagecontrol to test. Short or incorrect wiring will damage

control to test. Short or incorrect wiring will damage

control to test. Short or incorrect wiring will damagecontrol to test. Short or incorrect wiring will damage
thermostat and could cause personal injury and/orthermostat and could cause personal injury and/or

thermostat and could cause personal injury and/or

thermostat and could cause personal injury and/orthermostat and could cause personal injury and/or
property damage.property damage.

property damage.

property damage.property damage.

Thermostat installation and all components of the
system shall conform to Class II circuits per the NEC
code.

Electric/Gas Switch (Fan Option)Electric/Gas Switch (Fan Option)

Electric/Gas Switch (Fan Option)

Electric/Gas Switch (Fan Option)Electric/Gas Switch (Fan Option)

This thermostat is configured from the factory to operate a heat/
cool, fossil fuel (gas, oil, etc.), forced air system. It is configured
correctly for any system that DOES NOT require the thermostat
to energize the fan on a call for heat. If you system is an electric
heat or heat-pump system that REQUIRES the thermostat to
turn on the fan on a call for heat, locate the ELEC/GAS switch
on the back of the thermostat (see fig. 1) and switch it to the
ELEC position. This will allow the thermostat to energize the fan
immediately on a call for heat. If you are unsure if the heating/
cooling system requires the thermostat to control the fan,
contact a qualified heating and air conditioning service person.

When the thermostat is configured for Heat Pump, the thermo­stat will always power the circulator fan on a call for heat in the
HEAT mode. The ELEC/GAS switch must be set to match the
type of Auxiliary heat your system uses for proper operation in
the EMERgency mode.

Take care when securing and routing wires so they doTake care when securing and routing wires so they do

Take care when securing and routing wires so they do

Take care when securing and routing wires so they doTake care when securing and routing wires so they do
not short to adjacent terminals or rear of thermostat.not short to adjacent terminals or rear of thermostat.

not short to adjacent terminals or rear of thermostat.

not short to adjacent terminals or rear of thermostat.not short to adjacent terminals or rear of thermostat.
Personal injury and/or property damage may occur.Personal injury and/or property damage may occur.

Personal injury and/or property damage may occur.

Personal injury and/or property damage may occur.Personal injury and/or property damage may occur.

Attach Thermostat Base to WallAttach Thermostat Base to Wall

Attach Thermostat Base to Wall

Attach Thermostat Base to WallAttach Thermostat Base to Wall

1. Remove the packing material from the thermostat. Gently
pull the cover straight off the base. Forcing or prying on
the thermostat will cause damage to the unit.

2. Connect wires beneath terminal screws on base using
appropriate wiring schematic (see figs. 2 through 4).

3. Place base over hole in wall and mark mounting hole
locations on wall using base as a template.

4. Move base out of the way. Drill mounting holes.

5. Fasten base loosely to wall, as shown in fig. 1, using two
mounting screws. Place a level against bottom of base,
adjust until level, and then tighten screws. (Leveling is for
appearance only and will not affect thermostat operation.)
If you are using existing mounting holes, or if holes drilled
are too large and do not allow you to tighten base snugly,
use plastic screw anchors to secure subbase.

6. Push excess wire into wall and plug hole with a fire­resistant material (such as fiberglass insulation) to
prevent drafts from affecting thermostat operation.

2 “AA” alkaline batteries are included in the thermostat at the
factory with a battery tag to prevent power drainage. You
must remove the battery tag to engage the batteries.

“BATT”“BATT”

If

“BATT” is displayed, the batteries are low and should be

“BATT”“BATT”

!

Battery LocationBattery Location

Battery Location

Battery LocationBattery Location

replaced with fresh “AA” Energizer® alkaline batteries. To

All wiring diagrams are for typical systems only. Refer to
equipment manufacturers’ instructions for specific system wir­ing information.

O

Reversing Valve

Energized in Cool

Mode

B

Reversing Valve

Energized in Heat,

Off, Emergency

Mode

Y2

2nd Stage

Compressor

Compressor

Contactor

replace batteries, press system button to
batteries along the top of the base (see Fig. 1). The batteries
must be installed with the positive (+) end to the left.

G W2

Fan

Relay

Aux

Heat

Relay

E/W1

Emergency

Heat

Relay

CY1

*

MONITOR

Figure 2. Typical wiring diagram for single transformer heat pump systems

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries.

If safety circuits are in only one of the systems, remove
the transformer of the system with NO safety circuits.

NOTE

OFFOFF

OFF, install the

OFFOFF

L

SYSTEM
SWITCH

24 VAC

TRANSFORMER

(Class II Current Limited)

THERMOSTAT

R

SYSTEM

Hot

120 VAC

Neutral

TAPE OFF!

HOT

120 VAC

NEUTRAL

CUT AND

24 VAC

O

Reversing

Valve

Energized in

Cool Mode

B

Reversing

Valve

Energized in

Heat, Off,

Emergency

Mode

Y2

2nd Stage

Compressor

Compressor

Contactor

G W2

Fan

Relay

E/W1

Emergency

Aux

Heat

Relay

Heat

Relay

TWO COMMONS MUST
BE JUMPERED TOGETHER!

CY1

*

SYSTEM

MONITOR

SWITCH

L

THERMOSTAT

R

SYSTEM

Limit or

Safety

Switches

24 VAC

TRANSFORMER

(Class II Current Limited)

Hot

120 VAC

Neutral

Figure 3. Typical wiring diagram for two transformer heat pump systems with NO safety circuits

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries.

2

WIRING DIAGRAMSWIRING DIAGRAMS

WIRING DIAGRAMS

WIRING DIAGRAMSWIRING DIAGRAMS

O

Reversing

Valve

Energized in

Cool Mode

B

Reversing

Valve

Energized in

Heat, Off,

Emergency

Mode

Y2

2nd Stage

Compressor

Compressor

Contactor

G W2

Fan

Relay

Polarity must be observed. If the HOT side of the second transformer
is jumpered to the COMMON side of the first transformer a short will
be made. Damage to equipment will occur when power is restored.

E/W1

Emergency

Heat

Relay

Aux
Heat

Relay

TWO COMMONS MUST
BE JUMPERED TOGETHER!

CY1

*

SYSTEM

MONITOR

SWITCH

NOTE

L

COMMON

R

Limit or

Switches

Limit or

Safety

Switches

THERMOSTAT

Safety

24 VAC

24 VAC

ACCESSORY

RELAY N.O.

CONTACT

Current Limited)

COMMON

24 VAC 120 VAC

Heat Pump Transformer

(Class II Current Limited)

SYSTEM

Auxiliary

Heating

Transformer

(Class II

Limit or

Safety

HOT

Switches

120 VAC

The accessory relay scheme
is required when safety
circuits exist in both systems.

Limit or

Safety

Switches

NEUTRAL

NOTE

HOT

NEUTRAL

Figure 4. Typical wiring diagram for two transformer heat pump systems with safety circuits in BOTH systems

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries.

Heat Pump Terminal OutputsHeat Pump Terminal Outputs

Heat Pump Terminal Outputs

Heat Pump Terminal OutputsHeat Pump Terminal Outputs

Refer to equipment manufacturers' instructions for specific
system wiring information.

You can configure the thermostat for use with the following
heat pump system types:
HEAT PUMP TYPE 1HEAT PUMP TYPE 1

HEAT PUMP TYPE 1. Single stage compressor system; gas

HEAT PUMP TYPE 1HEAT PUMP TYPE 1
or electric backup.

This thermostat is designed to operate a single-transformer
system. If you have a two-transformer system, cut and tape off

one transformer. If transformer safety circuits are in only one of
the systems, remove the transformer of the system with NO
safety circuits. If required, replace remaining transformer with
a 75VA Class II transformer. After disconnecting one trans­former, the two commons must be jumpered together.

Use the terminal output information below to help you wire the
thermostat properly for your heat pump system. After wiring, see
CONFIGURATION CONFIGURATION

CONFIGURATION section for proper thermostat configuration.

CONFIGURATION CONFIGURATION

THERMOSTAT TERMINALS (HEAT PUMP)THERMOSTAT TERMINALS (HEAT PUMP)

THERMOSTAT TERMINALS (HEAT PUMP)

THERMOSTAT TERMINALS (HEAT PUMP)THERMOSTAT TERMINALS (HEAT PUMP)

SYSTEMSYSTEM

SYSTEM

SYSTEMSYSTEM

LL

L

LL

C*C*

C*

C*C*

RR

R

RR

W2W2

W2

W2W2

E/W1E/W1

E/W1

E/W1E/W1

Y2Y2

Y2

Y2Y2

Y1Y1

Y1

Y1Y1

GG

G

GG

OO

O

OO

BB

B

BB

Heat Malfunction 24 Volt 24 Volt HP 1 and Emergency No Heat and Blower/Fan Energized Energized Energized
Pump 1 Light (Common) (Hot) Emergency Mode Output Cool mode on call for Heat in Cool in Heat

2nd stage 1st stage 1st stage and Cool Mode OFF

Heat HP 2 2nd (compressor) Set GAS/ELEC switch Emergency
Pump 2 3rd stage stage for Emergency mode mode

compressor

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries.

O

Reversing

Valve

Energized in

Cool Mode

B

Reversing

Valve

Energized in

Heat Mode

Off Emergency

Y1

Compressor

Contactor

Stage 1

Y2

Compressor

Contactor

Stage 2

G

Fan

Relay

E/W1

Heat

Relay

Stage 1

W2

Heat

Relay

Stage 2

*

C R

THERMOSTAT

SYSTEM

Hot

24 VAC 120 VAC

Neutral

TRANSFORMER

(Class II, Current Limited)

Figure 5. Typical wiring diagram for single transformer multi-stage systems

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries.

3

Multi-Stage Terminal OutputsMulti-Stage Terminal Outputs

Multi-Stage Terminal Outputs

Multi-Stage Terminal OutputsMulti-Stage Terminal Outputs

Refer to equipment manufacturers' instructions for specific
system wiring information.

You can configure the thermostat for use with either multi-stage
electric heat systems or multi-stage gas systems. When con­figured for
energized on a call for heat.

This thermostat is designed to operate a single-transformer
system. If you have a two-transformer system, cut and tape off

SYSTEMSYSTEM

SYSTEM

SYSTEMSYSTEM

Multi-stage Malfunction 24 Volt 24 Volt Heat Mode Heat mode Cool Mode Cool Mode Blower/Fan Energized Energized Energized

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries.

CHECK THERMOSTAT OPERATIONCHECK THERMOSTAT OPERATION

CHECK THERMOSTAT OPERATION

CHECK THERMOSTAT OPERATIONCHECK THERMOSTAT OPERATION

electric electric

electric heat, the

electric electric

LL

L

LL

Light (Common) (Hot) 2nd stage 1st stage 2nd stage 1st stage on call for Cool (and in Cool in Heat, Off,

GG

G terminal (blower/fan) will be

GG

THERMOSTAT TERMINALS (MULTI-STAGE)THERMOSTAT TERMINALS (MULTI-STAGE)

THERMOSTAT TERMINALS (MULTI-STAGE)

THERMOSTAT TERMINALS (MULTI-STAGE)THERMOSTAT TERMINALS (MULTI-STAGE)

C*C*

C*

C*C*

RR

R

RR

W2W2

W2

W2W2

E/W1E/W1

E/W1

E/W1E/W1

NOTE

To prevent static discharge problems, touch side ofTo prevent static discharge problems, touch side of

To prevent static discharge problems, touch side of

To prevent static discharge problems, touch side ofTo prevent static discharge problems, touch side of
thermostat to release static build-up before touchingthermostat to release static build-up before touching

thermostat to release static build-up before touching

thermostat to release static build-up before touchingthermostat to release static build-up before touching
any keys.any keys.

any keys.

any keys.any keys.

If at any time during testing your system does not operate
properly, contact a qualified serviceperson.

Fan OperationFan Operation

Fan Operation

Fan OperationFan Operation

If your system does not have a
Heating SystemHeating System

Heating System.

Heating SystemHeating System

1. Turn on power to system.

2. Move FAN switch to
to operate.

3. Move FAN switch to
stop immediately.

ON ON

ON position. The blower should begin

ON ON

AUTO AUTO

AUTO position. The blower should

AUTO AUTO

!

Do not allow the compressor to run unless the com-Do not allow the compressor to run unless the com-

Do not allow the compressor to run unless the com-

Do not allow the compressor to run unless the com-Do not allow the compressor to run unless the com­pressor oil heaters have been operational for 6 hourspressor oil heaters have been operational for 6 hours

pressor oil heaters have been operational for 6 hours

pressor oil heaters have been operational for 6 hourspressor oil heaters have been operational for 6 hours
and the system has not been operational for at leastand the system has not been operational for at least

and the system has not been operational for at least

and the system has not been operational for at leastand the system has not been operational for at least
5 minutes.5 minutes.

5 minutes.

5 minutes.5 minutes.

Heating SystemHeating System

Heating System

Heating SystemHeating System

1. Press SYSTEM button to select the
the auxiliary heating system has a standing pilot, be sure
to light it.

2. Press
temperature. The heating system should begin to
operate. The display should show
setpoint temperature display is flashing, the compressor
lockout feature is operating (see Configuration menu,
item 5).

3. Adjust temperature setting to 3° above room temperature.
If your system configuration is set at MS2, HP2 or HP1,
the auxiliary heat system should begin to operate and the
display should show

4. Press
ture. The heating system should stop operating.

to adjust thermostat setting to 1° above room

“STG1+2”“STG1+2”

“STG1+2”.

“STG1+2”“STG1+2”

to adjust the thermostat below room tempera-

G G

G terminal connection, skip to

G G

CAUTION

Flame iconFlame icon

Flame icon ( ). If

Flame iconFlame icon

“STG1”“STG1”

“STG1”. However, if the

“STG1”“STG1”

one transformer. If transformer safety circuits are in only one of
the systems, remove the transformer of the system with NO
safety circuits. If required, replace remaining transformer with
a 75VA Class II transformer. After disconnecting one trans­former, the two commons must be jumpered together.

Use the terminal output information below to help you wire the
thermostat properly for your multi-stage system. After wiring,

CONFIGURATION CONFIGURATION

see

CONFIGURATION section for proper thermostat configu-

CONFIGURATION CONFIGURATION

ration.

Y2Y2

Y2

Y2Y2

EMER bypasses the Heat Pump to use the heat source wired
to terminal E on the thermostat. EMER is typically used when
compressor operation is not desired, or you prefer back-up
heat only.

1. Press SYSTEM button to select EMER.
on the display.

2. Press to adjust thermostat setting above room
temperature. The Aux. heating system will begin to
operate. The display will show

and
operating.

3. Adjust temperature setting to 3° above room temperature.
The auxiliary heat system should begin to operate and the
display should show

4. Press
ture. The Aux. heating system should stop operating.

To prevent compressor and/or property damage, ifTo prevent compressor and/or property damage, if

To prevent compressor and/or property damage, if

To prevent compressor and/or property damage, ifTo prevent compressor and/or property damage, if
the outdoor temperature is below 50°F, DO NOTthe outdoor temperature is below 50°F, DO NOT

the outdoor temperature is below 50°F, DO NOT

the outdoor temperature is below 50°F, DO NOTthe outdoor temperature is below 50°F, DO NOT
operate the cooling system.operate the cooling system.

operate the cooling system.

operate the cooling system.operate the cooling system.

1. Press SYSTEM button to select the

2. Press
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. The display
should show

3. Adjust temperature setting to 3° below room temperature.
The second stage cooling should begin to operate and
the display should show

4. Press
temperature. The cooling system should stop operating.

Y1Y1

Y1

Y1Y1

Emergency SystemEmergency System

Emergency System

Emergency SystemEmergency System

Flame iconFlame icon

Flame icon (

Flame iconFlame icon

to adjust the thermostat below room tempera-

!

Cooling SystemCooling System

Cooling System

Cooling SystemCooling System

to adjust thermostat setting below room

“STG1”“STG1”

“STG1”.

“STG1”“STG1”

to adjust the temperature setting above room

GG

G

GG

Heat if configured Mode Emergency

to Electric Heat) Modes

“STG1”“STG1”

“STG1” flashing

“STG1”“STG1”

) to indicate that the Aux. system is

“STG1+2”“STG1+2”

“STG1+2”.

“STG1+2”“STG1+2”

OO

O

OO

“EMER”“EMER”

“EMER” will flash

“EMER”“EMER”

CAUTION

Snowflake iconSnowflake icon

Snowflake icon ( ).

Snowflake iconSnowflake icon

“STG1+2”“STG1+2”

“STG1+2”.

“STG1+2”“STG1+2”

BB

B

BB

“EMER”“EMER”

“EMER”

“EMER”“EMER”

4

Before you begin programming your thermostat, you should be
familiar with its features and with the display and the location
and operation of the thermostat buttons. Your thermostat
consists of two parts: the thermostat cover and the base. To
remove the cover, pull it straight out from the base. To replace
the cover, line up the cover with the base and press until the
cover snaps onto the base.

The Thermostat Buttons and SwitchesThe Thermostat Buttons and Switches

The Thermostat Buttons and Switches

The Thermostat Buttons and SwitchesThe Thermostat Buttons and Switches

Raises temperature setting

1

Lowers temperature setting.

2

TIME button.

3

PRGM (program) button.

4

RUN (run program) button.

5

HOLD temperature button.

6

ONON

FAN switch (

7

ON,

ONON

AUTOAUTO

AUTO)

AUTOAUTO

OPERATIONOPERATION

OPERATION

OPERATIONOPERATION

SYSTEM button (

8

Indicates day of the week.

9

Flame iconFlame icon

Flame icon ( ) is displayed when the system is in

Flame iconFlame icon

10

HEAT HEAT

HEAT mode.

HEAT HEAT
the system is in

Snowflake icon Snowflake icon

Snowflake icon (

Snowflake icon Snowflake icon
when thermostat is in

Displays

11

should be replaced. Only
minutes field are displayed when batteries are low and
with no system power.

Alternately displays current time and temperature. Dis-

12

plays
The word

13

in the HOLD mode.
when the thermostat is in a temporary HOLD mode.when the thermostat is in a temporary HOLD mode.

when the thermostat is in a temporary HOLD mode.

when the thermostat is in a temporary HOLD mode.when the thermostat is in a temporary HOLD mode.
Displays currently programmed set temperature (this

14

is blank when SYSTEM is OFF).
Displays

15

programmed filter time period as a reminder to change
or clean your filter.

The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal require­ments.

Set SYSTEM

and to enter configuration menu. The display will

show the first item in the configuration menu.

The configuration menu table summarizes the configuration
options. An explanation of each option follows.

Press SYSTEM
menu and return to the program operation, press RUN. If no keys
are pressed within fifteen minutes, the thermostat will revert to
normal operation.

“BATT” “BATT”

“BATT” when the 2 "AA" batteries are low and

“BATT” “BATT”

“LO” “LO”

“LO” in the minutes field when batteries are low.

“LO” “LO”

“FLTR” “FLTR”

“FLTR” when the system has run for the

“FLTR” “FLTR”

COOLCOOL

COOL,

COOLCOOL

The DisplayThe Display

The Display

The DisplayThe Display

Snowflake icon Snowflake icon

Snowflake icon (

Snowflake icon Snowflake icon

COOL COOL

COOL mode.

COOL COOL

“HOLD” “HOLD”

“HOLD” is displayed when the thermostat is

“HOLD” “HOLD”

button to

to change to the next menu item. To exit the

AUTOAUTO

AUTO,

AUTOAUTO

) are displayed simultaneously

AUTO AUTO

AUTO mode.

AUTO AUTO

“HOLD” is displayed flashing“HOLD” is displayed flashing

“HOLD” is displayed flashing

“HOLD” is displayed flashing“HOLD” is displayed flashing

OFFOFF

OFF, then simultaneously press

OFFOFF

HEATHEAT

HEAT,

HEATHEAT

) is displayed when

Flame iconFlame icon

Flame icon ( ) and

Flame iconFlame icon

“BATT” “BATT”

“BATT” and

“BATT” “BATT”

“LO” “LO”

“LO” in the

“LO” “LO”

EMEREMER

EMER,

EMEREMER

OFFOFF

OFF)

OFFOFF

Figure 6 – Thermostat display, buttons and switchesFigure 6 – Thermostat display, buttons and switches

Figure 6 – Thermostat display, buttons and switches

Figure 6 – Thermostat display, buttons and switchesFigure 6 – Thermostat display, buttons and switches

Display ( ) when in keypad lockout mode.

16

“EMER” “EMER”

“EMER” is displayed flashing when the system is in

“EMER” “EMER”

17

EMER mode.
The word

18

malfunction in the HEAT/COOL system.
Display ( ) when limited HEAT/COOL range is activated.

19

The “
the temperature beyond the limited HEAT/COOL
temperature range.

Stage1 & 2Stage1 & 2

Stage1 & 2 indicators: The thermostat shall indicate

Stage1 & 2Stage1 & 2

20

when the first and second stage is energized except
in emergency mode. The icon is
stage energized. The icons for the first and second
stage energized are
right side of the display.

Single Stage, Multi-stage or Heat Pump SystemSingle Stage, Multi-stage or Heat Pump System

1)

Single Stage, Multi-stage or Heat Pump System

Single Stage, Multi-stage or Heat Pump SystemSingle Stage, Multi-stage or Heat Pump System
ConfigurationConfiguration

Configuration – This control can be configured for Heat

ConfigurationConfiguration
Pump or two stage heat/two stage cool multi-stage opera­tion. The display indicates
mode) in the display. The Multi-stage configuration can be

toggled to

key. In Multi-stage configuration, SYSTEM button will

not have
Programs Per Week Programs Per Week

2)

Programs Per Week – This control can be configured for 7

Programs Per Week Programs Per Week
independent day or 5/1/1/ programming or non-program­mable mode. The display indicates
programs per week can be toggled to
pressing the

“FAULT”“FAULT”

“FAULT” will be displayed when there is a

“FAULT”“FAULT”

” icon will flash if an attempt is made to adjust

“STG 1”“STG 1”

“STG 1” for the first

“STG 1”“STG 1”

“STG1+2”“STG1+2”

“STG1+2” located in the upper

“STG1+2”“STG1+2”

CONFIGURATION MENUCONFIGURATION MENU

CONFIGURATION MENU

CONFIGURATION MENUCONFIGURATION MENU

“MS 2”“MS 2”

“MS 2” (default for multi-stage

“MS 2”“MS 2”

“SS1”“SS1”

“SS1”,

EMEREMER

EMERgency mode.

EMEREMER

“HP2”“HP2”

“HP2”, or

“SS1”“SS1”

“HP2”“HP2”

or keys. With

“HP1”“HP1”

“HP1” by pressing the

“HP1”“HP1”

“7d”“7d”

“7d” as default. The

“7d”“7d”

“5d”“5d”

“5d” or

“5d”“5d”

“0d”“0d”

“0d” selected for non-

“0d”“0d”

“0d”“0d”

“0d” by

“0d”“0d”

or

5

CONFIGURATION MENUCONFIGURATION MENU

CONFIGURATION MENU

CONFIGURATION MENUCONFIGURATION MENU

StepStep

Step

StepStep

1

2

3

4

5

6

7

8

9

Press the SYSTEM button until

PressPress

Press

PressPress

Button(s)Button(s)

Button(s)

Button(s)Button(s)

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

DisplayedDisplayed

Displayed

DisplayedDisplayed

(Factory Default)(Factory Default)

(Factory Default)

(Factory Default)(Factory Default)

MS 2MS 2

MS 2

MS 2MS 2

7d7d

7d

7d7d

PRG 4PRG 4

PRG 4

PRG 4PRG 4

4:00 HOLD4:00 HOLD

4:00 HOLD

4:00 HOLD4:00 HOLD

EMREMR

EMR

EMREMR
(ON)(ON)

(ON)

(ON)(ON)

FAFA

FA

FAFA

CLCL

CL

CLCL

(OFF)(OFF)

(OFF)

(OFF)(OFF)

CDLCDL

CDL

CDLCDL

(ON)(ON)

(ON)

(ON)(ON)

FAFA

FA

FAFA

(ON)(ON)

(ON)

(ON)(ON)

OFF OFF

OFF is displayed, then press the and simultaneously

OFF OFF

INSTALLER/CONFIGURATION MENUINSTALLER/CONFIGURATION MENU

INSTALLER/CONFIGURATION MENU

INSTALLER/CONFIGURATION MENUINSTALLER/CONFIGURATION MENU

Press Press

Press

Press Press

SS1, HP2, HP1SS1, HP2, HP1

SS1, HP2, HP1 Selects Single stage, Multi-stage, or Heat Pump

SS1, HP2, HP1SS1, HP2, HP1

(increments of 15 minutes)

or or

or

or or

to selectto select

to select

to selectto select

(Single stage or 2-stage) System Configuration

5d, 0d5d, 0d

5d, 0d Selects Programs Per Week

5d, 0d5d, 0d

PRG 2PRG 2

PRG 2 Selects Programmable Periods (PRG 2 = 2

PRG 2PRG 2

programmable periods; PRG 4 = 4 programmable periods)

0:15 to 4:000:15 to 4:00

0:15 to 4:00 Selects Temporary Program Override Time

0:15 to 4:000:15 to 4:00

OFFOFF

OFF Selects Energy Management Recovery

OFFOFF

SLSL

SL Selects Fast or Slow Cycle Selection

SLSL

CLCL

CL Selects Compressor Lockout

CLCL

(ON)(ON)

(ON)

(ON)(ON)

CDLCDL

CDL Selects Backlight Display

CDLCDL

(OFF)(OFF)

(OFF)

(OFF)(OFF)

FAFA

FA Selects Fast Second Stage

FAFA

(OFF)(OFF)

(OFF)

(OFF)(OFF)

CommentsComments

Comments

CommentsComments

OFF OFF

OFF or

OFF OFF

CL OFFCL OFF

CL OFF or

CL OFFCL OFF

ON ON

OFFOFF

ON or

OFF

ON ON

OFFOFF

ONON

ON

ONON

ONON

ON

ONON

10

11

12

13

14

15

16

17

18

19

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

SystemSystem

System

SystemSystem

RunRun

Run Returns to the OFF position

RunRun

0 FLTR0 FLTR

0 FLTR

0 FLTR0 FLTR

0°F0°F

0°F

0°F0°F

(Room Temperature)

°F°F

°F

°F°F

AU OnAU On

AU On

AU OnAU On

LRLR

LR

LRLR

(90)(90)

(90)

(90)(90)

LRLR

LR

LRLR

(45)(45)

(45)

(45)(45)

CACA

CA

CACA

(OFF)(OFF)

(OFF)

(OFF)(OFF)

(OFF)(OFF)

(OFF)

(OFF)(OFF)

00

0

00

50-195050-1950

50-1950 (increments of 50) Selects filter replacement run time

50-195050-1950

4 LO to 4 HI4 LO to 4 HI

4 LO to 4 HI Selects Temperature Display Adjustment

4 LO to 4 HI4 LO to 4 HI

LR 62 to LR89LR 62 to LR89

LR 62 to LR89 Selects Limited

LR 62 to LR89LR 62 to LR89

LR 46 to LR 82LR 46 to LR 82

LR 46 to LR 82 Selects Limited COOL range

LR 46 to LR 82LR 46 to LR 82

programmable, SYSTEM button selection will skip
Programmable periods (item 3), programmable hold time
(item 4) and EMR (item 5).

Programmable Periods Programmable Periods

3)

Programmable Periods – This control can be configured

Programmable Periods Programmable Periods
for 4 or 2 programmable periods. The display indicates
“PRG 4”“PRG 4”

“PRG 4” in the display as default. The programmable

“PRG 4”“PRG 4”
periods can be toggled to

“PRG 2”“PRG 2”

“PRG 2” by pressing the

“PRG 2”“PRG 2”

or keys.
Select Temporary Program Override TimeSelect Temporary Program Override Time

4)

Select Temporary Program Override Time – The thermo-

Select Temporary Program Override TimeSelect Temporary Program Override Time
stat can hold any temperature you set it to for the amount
of time you select on this option. Your choices are 0:15 to
4:00 hours in 15 minute increments.

6

4 LO4 LO

4 LO to

4 LO4 LO

°C°C

°C Selects temperature display

°C°C

OFFOFF

OFF Selects AUTO Mode ON or OFF

OFFOFF

CACA

CA Feature Not Available

CACA

(ON)(ON)

(ON)

(ON)(ON)

(ON)(ON)

(ON) Selects Keypad Lockout

(ON)(ON)

001 to 999001 to 999

001 to 999 Selects Keypad lockout combination number

001 to 999001 to 999

Press System to set code

F° F°

°C°C

F° or

°C selection

F° F°

°C°C

HEAT HEAT

HEAT range

HEAT HEAT

Example:

1. You have selected 3:00 hours for the Temporary Pro­gram Override time period.

2. With the thermostat set to Heat or Cool, press
to set the temperature to your preference.
The thermostat will maintain this temperature setting for
3 hours with

“HOLD” “HOLD”

“HOLD” blinking to remind you it is in

“HOLD” “HOLD”
Temporary Hold. After 3 hours, the thermostat will go
back to the program temperature and

“HOLD” “HOLD”

“HOLD” will no

“HOLD” “HOLD”

longer blink or display.

4 HI4 HI

4 HI

4 HI4 HI

or

Select Energy Management Recovery OFF or ONSelect Energy Management Recovery OFF or ON

5)

Select Energy Management Recovery OFF or ON –

Select Energy Management Recovery OFF or ONSelect Energy Management Recovery OFF or ON
Energy Management Recovery (EMR) causes 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. Cooling allows
more time per degree because it takes longer to reach
temperature.

Example:Example:

Example: You select EMR and have your heating program-

Example:Example:
med 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.

Fast or Slow Cycle SelectionFast or Slow Cycle Selection

6)

Fast or Slow Cycle Selection – The factory default setting

Fast or Slow Cycle SelectionFast or Slow Cycle Selection
is fast cycle, which cycles 1st stage at approximately 1.2°F
and 2nd stage 0.75°F. If you prefer slow cycle, press the

or key to change to SL. The 1st stage and 2nd

stage would be 1.5°F and 1.2°F respectively.
Select Compressor Lockout CL OFF or ONSelect Compressor Lockout CL OFF or ON

7)

Select Compressor Lockout CL OFF or ON – Selecting

Select Compressor Lockout CL OFF or ONSelect Compressor Lockout CL OFF or ON
CL ON will cause the thermostat to wait 5 minutes before
turning on the compressor if the heating and cooling system
loses power. It will also wait 5 minutes minimum between
cooling and heating 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 about five minutes.

Select Backlight DisplaySelect Backlight Display

8)

Select Backlight Display – The display backlight improves

Select Backlight DisplaySelect Backlight Display
display contrast in low lighting conditions. When the
terminal is powered, selecting backlight CdL ON will turn
the light on continuously. Select backlight OFF will keep
the light on momentarily after any key is pressed. When the
CC

C terminal is not powered, this selection has no effect.

CC
Select (Fast) Second Stage ON or OFFSelect (Fast) Second Stage ON or OFF

9)

Select (Fast) Second Stage ON or OFF – In the run mode,

Select (Fast) Second Stage ON or OFFSelect (Fast) Second Stage ON or OFF
if the setpoint temperature is manually raised by 3°F (2°C)
or more above the actual temperature with the
fast second stage feature is enabled, FA ON, the second
stage will energize immediately. With FA OFF, second
stage will not energize until the setpoint temperature is 1°F
or more above actual temperature for more than ten min­utes.

Select filter replacement run timeSelect filter replacement run time

10)

Select filter replacement run time – The thermostat will

Select filter replacement run timeSelect filter replacement run time

FLTR FLTR

display

FLTR after a set time of operation. This is a remind-

FLTR FLTR
er to change or clean your air filter. This time can be set from
0 to 1950 hours in 50 hour increments.
will cancel this featurewill cancel this feature

will cancel this feature. When

will cancel this featurewill cancel this feature
can clear it by pressing HOLD and RUN
This resets the timer and starts counting the hours until the
next filter change. Contact your system manufacturer for a
specific replacement/maintenance interval.

Select Temperature Display Adjustment 4 LO to 4 HISelect Temperature Display Adjustment 4 LO to 4 HI

11)

Select Temperature Display Adjustment 4 LO to 4 HI –

Select Temperature Display Adjustment 4 LO to 4 HISelect Temperature 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 thermostat. The cur­rent or adjusted room temperature will be displayed on the
left side of the display.

A selection of 000A selection of 000

A selection of 000

A selection of 000A selection of 000

“FLTR” “FLTR”

“FLTR” is displayed, you

“FLTR” “FLTR”

at the same time.

, and the

Select F° or C° ReadoutSelect F° or C° Readout

12)

Select F° or C° Readout – Changes the display readout to

Select F° or C° ReadoutSelect F° or C° Readout
Centigrade or Fahrenheit as required.

Selected Auto mode Selected Auto mode

13)

Selected Auto mode – This control will feature AUTO

Selected Auto mode Selected Auto mode
changeover mode when AU on is selected (default). Press
the

or keys in the menu mode to defeat the auto

changeover mode (OFF).
Limited Heat RangeLimited Heat Range

14)

Limited Heat Range – This feature provides a maximum

Limited Heat RangeLimited Heat Range
setpoint temperature for heat. The default setting is 90°F. It
can be changed between 62°F and 89°F by pressing the

or key.

Limited Cool RangeLimited Cool Range

15)

Limited Cool Range – This feature provides a minimum

Limited Cool RangeLimited Cool Range
setpoint temperature for cool. The default setting is 45°F. It
can be changed between 46°F and 82°F by pressing the

or key.

Compressor Defeat on Comfort Alert errorCompressor Defeat on Comfort Alert error

16)

Compressor Defeat on Comfort Alert error – By selecting

Compressor Defeat on Comfort Alert errorCompressor Defeat on Comfort Alert error
CAL on (default), the compressor will be locked when any
CA error is detected. The compressor will not be locked
when CA error is detected if CAL is OFF.

17 & 18) Keypad Lockout

lock icon ( ) and “OFF” (default, keypad not locked out).

The and are used to toggle the selection between OFF
and ON (keypad locked out). When the keypad lockout
selection is enabled (ON), and the SYSTEM button is
pressed again, the display will indicate the number “0”
(default, still disabled) in the time digits. The and are
used to set the combination number from 0 to 999. If a
combination of 0is selected and the SYSTEM button is
pressed, the menu will be exited and keypad will not be
locked. If 1 to 999 is selected and the SYSTEM button is

CC

C

CC

pressed, the combination is stored into memory and the
menu is exited. The ( ) will display designating keypad
locked with a valid combination. The SYSTEM button will
operate for 10 seconds after the menu mode is exited to allow
the user to change the mode from OFF to the desired
SYSTEM mode.

While the keypad is locked out, a simultaneous press of

and will enter the configuration menu from any
mode instead of only OFF mode. When the menu is
entered with the keypad lockout feature enabled, the first
menu item displayed is the combination code 0. The or

keys are used to set the combination unlock number
from 0 to 999. If the unlock number matches exactly with
the combination lock number stored in memory when the
SYSTEM button is pressed, the keypad is unlocked and
the ( ) is removed. If the unlock number does not match
when the SYSTEM button is pressed, the menu is exited
and the keypad remains disabled.

To reset the combination code and unlock the keypad if
the code is forgotten, see troubleshooting section.

CONFIGURATION MENUCONFIGURATION MENU

CONFIGURATION MENU

CONFIGURATION MENUCONFIGURATION MENU

– This menu selection will display

7

SPECIFICASPECIFICA

SPECIFICA

SPECIFICASPECIFICA

ELECTRICAL DATAELECTRICAL DATA

ELECTRICAL DATA

ELECTRICAL DATAELECTRICAL DATA

Electrical RatingElectrical Rating

Electrical Rating:

Electrical RatingElectrical Rating

20 to 30 VAC 50/60 Hz or DC

0.05 to 1.5 Amps (Load per terminal)

2.5 Amps Maximum Total Load (All terminals combined)

TIONSTIONS

TIONS

TIONSTIONS

THERMAL DATATHERMAL DATA

THERMAL DATA

THERMAL DATATHERMAL DATA

Setpoint Temperature RangeSetpoint Temperature Range

Setpoint Temperature Range:

Setpoint Temperature RangeSetpoint Temperature Range

45°F to 90°F (7°C to 32°C)

Operating Ambient Temperature RangeOperating Ambient Temperature Range

Operating Ambient Temperature Range:

Operating Ambient Temperature RangeOperating Ambient Temperature Range

32°F to 105°F

Operating Humidity RangeOperating Humidity Range

Operating Humidity Range:

Operating Humidity RangeOperating Humidity Range

0 to 90% RH (non-condensing)

Shipping Temperature RangeShipping Temperature Range

Shipping Temperature Range:

Shipping Temperature RangeShipping Temperature Range

-40°F to 150°F

OPERAOPERA

OPERA

OPERAOPERA

The system "mode" is selected by pressing the SYSTEM button.
Icons on the bottom right corner of the display will indicate the
mode:
any mode except
on the right side of the display. In
The current temperature will be displayed on the left side of the
display.

To operate properly in the
temperature cannot be the same as or higher than the cool
setpoint temperature. The heat setpoint must be at least 1°
lower than the cool setpoint.

When the thermostat is in the
Snowflake Snowflake

Snowflake icons are displayed. The thermostat will call for heat

Snowflake Snowflake
or cool depending on the room temperature. The setpoint
temperature displayed will be that of the last mode called. If the
last system cycle was heat, the
If the room temperature raises above the
COOL COOL

COOL setpoint and a call for cool is required, the temperature

COOL COOL
displayed will change to be the

Your thermostat is designed to determine the optimum time to
activate the second stage. Simply raising the temperature in
heating or lowering it in cooling will not always force the
thermostat to bring the second stage on quickly. There is a time
delay from 0-30 minutes depending on the performance of the
first stage of the system.

EXAMPLE: For the last 2 hours the thermostat is set on 70° and
the room temperature is 70° with the equipment using only the
first stage of heat. Since the equipment is keeping the tempera­ture within 1° of setpoint, the thermostat will delay second stage
for a longer time if you manually raise the temperature or if the
room temperature quickly changes. Once the second stage
comes on, it will come on sooner the next time there is a
difference between the setpoint and the room temperature. The
net effect of the staging program is that when the first stage is
capable of making temperature the second stage will delay
longer. When the thermostat calculates that first stage cannot
make temperature in a reasonable time, the second stage will
come on sooner. This built in function automatically optimizes
the use of additional stages of heat or cool.

TIONTION

TION

TIONTION

COOL COOL

COOL (

COOL COOL

Automatic System ChangeoverAutomatic System Changeover

Automatic System Changeover

Automatic System ChangeoverAutomatic System Changeover

AUTO AUTO

),

AUTO ( ),

AUTO AUTO

OFFOFF

OFF, the setpoint temperature will be shown

OFFOFF

Second Stage Time DelaySecond Stage Time Delay

Second Stage Time Delay

Second Stage Time DelaySecond Stage Time Delay

HEAT HEAT

HEAT ( ),

HEAT HEAT

OFFOFF

OFF, this area will be blank.

OFFOFF

AUTO AUTO

AUTO mode, the heat setpoint

AUTO AUTO

AUTO AUTO

AUTO mode, both the

AUTO AUTO

HEAT HEAT

HEAT setpoint will be displayed.

HEAT HEAT

COOL COOL

COOL setpoint.

COOL COOL

EMEREMER

EMER, or

EMEREMER

HEAT HEAT

HEAT setpoint and the

HEAT HEAT

OFFOFF

OFF. In

OFFOFF

Flame Flame

Flame and

Flame Flame

Manual OperationManual Operation

Manual Operation

Manual OperationManual Operation

Permanent Program OverridePermanent Program Override

Permanent Program Override (

Permanent Program OverridePermanent Program Override
button set to
release.
temperature. The thermostat will hold the room temperature at
the selected setting until you press RUN button to start program
operation again.

Temperature Program OverrideTemperature Program Override

Temperature Program Override – Press

Temperature Program OverrideTemperature Program Override
display shows the temperature you want. The thermostat will
override current programming and keep the room temperature
at the selected temperature for a programmed time period.
“HOLD”“HOLD”

“HOLD” will be displayed and flashing. The thermostat will

“HOLD”“HOLD”
automatically revert to the program after programmed period.

LOW BATTERY INDICATORLOW BATTERY INDICATOR

•

LOW BATTERY INDICATOR — If the 2 “AA” alkaline batter-

LOW BATTERY INDICATORLOW BATTERY INDICATOR
ies are low and should be replaced, the display will be blank
except for “
any button will cause the display to operated for ten seconds.
After ten seconds, the display will be blank except for “
BATTBATT

BATT”. You cannot program with low batteries, but you can

BATTBATT
override setpoint temperature. After “
displayed for 4 weeks, the thermostat will raise the tempera­ture 10 degrees above your setpoint on COOL mode and will
drop the temperature 10 degrees below your setpoint on
HEAT mode. If the “
when it reaches certain value, the thermostat will turn off all
the loads and “

SIMPLIFIED COPY DAY FUNCTIONSIMPLIFIED COPY DAY FUNCTION

•

SIMPLIFIED COPY DAY FUNCTION — This feature allows

SIMPLIFIED COPY DAY FUNCTIONSIMPLIFIED COPY DAY FUNCTION
Monday’s program to be copied into the rest of the week’s
programming.
programmed your thermostat.programmed your thermostat.

programmed your thermostat. To use this feature, simply

programmed your thermostat.programmed your thermostat.
enter the program for Monday as described in ENTERING
YOUR PROGRAM, then press RUN or HOLD. The only way
to restore this feature is to complete a software reset (see
Reset Operation under TROUBLESHOOTING section).

COPY DAY FUNCTIONCOPY DAY FUNCTION

•

COPY DAY FUNCTION — This feature allows

COPY DAY FUNCTIONCOPY DAY FUNCTION
a selected day’s program to be copied to the desired day’s
programming. To use this feature: in PRGM mode, select the
day to be copied
program for the selected day as described in ENTERING
YOUR PROGRAM. Press and hold the TIME button for 4
seconds to begin the COPY mode. The LCD will display
“COPY”“COPY”

“COPY” and the selected day to be copied. The day the

“COPY”“COPY”
program will copy
to select the day you want to copy
the Copy Day operation and return to PRGM mode. Press
RUN to exit.

HEAT HEAT

HEAT or

HEAT HEAT

“HOLD” “HOLD”

“HOLD” will be displayed. Use or to adjust the

“HOLD” “HOLD”

LO BATTLO BATT

LO BATT”. When the batteries are low, pressing

LO BATTLO BATT

COOLCOOL

COOL, press the HOLD button once and

COOLCOOL

LO BATTLO BATT

LO BATT” condition continues, and

LO BATTLO BATT

LO BATTLO BATT

LO BATT” will flash.

LO BATTLO BATT

This feature is available the first time youThis feature is available the first time you

This feature is available the first time you

This feature is available the first time youThis feature is available the first time you

from by pressing the HOLD button. Enter the

to will be flashing. Press the HOLD button

HOLDHOLD

HOLD) – With the SYSTEM

HOLDHOLD

or until the

LOLO

LO

LOLO

LO BATTLO BATT

LO BATT” has been

LO BATTLO BATT

to. Press TIME to complete

8

OPERATIONOPERATION

PM

OPERATION

OPERATIONOPERATION

PROGRAMMING YOUR THERMOSTATPROGRAMMING YOUR THERMOSTAT

PROGRAMMING YOUR THERMOSTAT

PROGRAMMING YOUR THERMOSTATPROGRAMMING YOUR THERMOSTAT

This section will help you plan your thermostat's program to
meet your needs. For maximum comfort and efficiency, keep the
following guidelines in mind when planning your program.

• When heating (cooling) your building, program the temper­atures to be cooler (warmer) when the building is vacant or
during periods of low activity.

• During early morning hours, the need for cooling is usually
minimal.

Planning Your ProgramPlanning Your Program

Planning Your Program

Planning Your ProgramPlanning Your Program

Look at the factory preprogrammed times and temperatures
shown in the sample schedule. If this program will suit your
needs, simply press the RUN button to begin running the factory
preset program.

If you want to change the preprogrammed times and tempera­tures, follow these steps.

Determine the time periods and temperatures for your program.
You can program four or two periods for each day (see Configu­ration menu, item 3). You may use the same heating and cooling
temperatures for consecutive time periods. You can choose
start times, heating temperatures, and cooling temperatures
independently (for example, you may select 5:00 AM and 70° as
the weekday
also choose 7:00 AM and 76° as the weekday
coolingcooling

cooling start time and temperature).

coolingcooling

1st period heating1st period heating

1st period heating start time and temperature and

1st period heating1st period heating

1st period1st period

1st period

1st period1st period

Use the table to plan your program time periods and the
temperatures you want during each period. Fill in the complete
table to have a record of your programs.

Heating/Cooling Schedule Plan (Factory Program)

Period

1ST
2ND
3RD
4TH
1ST
2ND
3RD

COOL HEAT

4TH

SAMPLE

ALL DAYS OF THE WEEK

Start Time Temperature

6:00 AM
8:00 AM
5:00 PM

10:00 PM

6:00 AM
8:00 AM
5:00 PM

10:00 PM

70 F
62 F
70 F
62 F
78 F
85 F
78 F
82 F

Entering Your ProgramEntering Your Program

Entering Your Program

Entering Your ProgramEntering Your Program

Set Current Time and DaySet Current Time and Day

Set Current Time and Day

Set Current Time and DaySet Current Time and Day

1. Press TIME button once. The display will show the hour
only.

EXAMPLE:

2. Press and hold either
correct hour and AM/PM designation (

PM PM

night;

PM begins at noon).

PM PM

or until you reach the

AM AM

AM begins at mid-

AM AM

3. Press TIME once again. The display window will show
the minutes only.

EXAMPLE:

4. Press and hold either

or until you reach the

correct minutes.

5. Press TIME once again. The display will show the day of
the week.

6. Press

or until you reach the current day of the

week.

7. Press RUN once. The display will show the correct time
and room temperature alternately.

Enter Heating ProgramEnter Heating Program

Enter Heating Program

Enter Heating ProgramEnter Heating Program

1. Move the SYSTEM switch to HEAT.

2. Press PRGM once. “MO” (indicating Monday program)
will appear in the display. Also displayed are the currently
programmed start time for the 1st heating period and the
currently programmed temperature (flashing).

EXAMPLE:

This display window shows that for Monday’s 1st heating
period, the start time is 6:00 AM, and 70° is the programmed
temperature (this example reflects factory preprogramming).

3. Press or to change the displayed temperature to
your selected temperature for Monday’s 1st heating
program period.

4. Press TIME once (the programmed time will flash). Press

or until your selected start time for Monday’s 1st

Mon
Tues
Wed
Thur
Fri
Sat
Sun

PERIOD 1

HEAT COOL

Time Temp Time Temp

Heating/Cooling Schedule Plan

PERIOD 2

HEAT COOL

Time Temp Time Temp

PERIOD 3

HEAT COOL

Time Temp Time Temp

PERIOD 4

HEAT COOL

Time Temp Time Temp

9

OPERAOPERA

OPERA

OPERAOPERA

heating program period appears. The time will change in 15­minute increments. When your selected time is displayed,
press TIME again to return to the change temperature mode.

5. Press PRGM once. The currently programmed start time
and setpoint temperature for the Monday’s 2nd heating
program period will appear.

6. Repeat steps 3 and 4 to select the start time and heating
temperature for Monday’s 2nd heating program period.

7. Repeat steps 3 through 5 for the 3rd and 4th heating
program periods. Monday heating programs are now
complete.

TIONTION

TION

TIONTION

NOTE

If you are programming your thermostat for the first time and you
want programming for all days of the week to be the same as
Monday’s program, press RUN or HOLD at this point, and
proceed to Enter Cooling Program. (This simplified COPY
DAY feature only works the first time you program your thermo­stat. If you want to copy one day’s programming to a specific day
programming, refer to COPY DAY FUNCTION in OPERATING
FEATURES. If you are changing your thermostat’s program­ming, you must program each day separately.)

8. Press PRGM once. “TU” (indicating Tuesday
program) will appear in the display, along with the
start time for the 1st heating period and the currently
programmed temperature.

9. Repeat steps 3 through 7 to complete Tuesday’s
heating programming.

10.Continue entering each day’s programming until all
heating periods time and temperatures have been
entered.

11.When you have complete entering your heating
program, press RUN.

Enter Cooling ProgramEnter Cooling Program

Enter Cooling Program

Enter Cooling ProgramEnter Cooling Program

CAUTION

!

If the outside temperature is below 50°F, disconnectIf the outside temperature is below 50°F, disconnect

If the outside temperature is below 50°F, disconnect

If the outside temperature is below 50°F, disconnectIf the outside temperature is below 50°F, disconnect
power to the cooling system before programming.power to the cooling system before programming.

power to the cooling system before programming.

power to the cooling system before programming.power to the cooling system before programming.
Energizing the air conditioner compressor duringEnergizing the air conditioner compressor during

Energizing the air conditioner compressor during

Energizing the air conditioner compressor duringEnergizing the air conditioner compressor during
cold weather may cause personal injury or propertycold weather may cause personal injury or property

cold weather may cause personal injury or property

cold weather may cause personal injury or propertycold weather may cause personal injury or property
damage.damage.

damage.

damage.damage.

1. Press SYSTEM button to

2. Follow

Follow these steps to check your thermostat programming
one final time before beginning thermostat operation.

1. Press SYSTEM button to

2. Press PRGM to view the 1st Monday heating period

3. Press RUN.

4. Press SYSTEM button to

5. Repeat step 2 to check cooling program.

6. Press SYSTEM button to

NOTE: Batteries are not required to keep your programming

YOUR THERMOSTAT IS NOW PROGRAMMED AND READY TOYOUR THERMOSTAT IS NOW PROGRAMMED AND READY TO

YOUR THERMOSTAT IS NOW PROGRAMMED AND READY TO

YOUR THERMOSTAT IS NOW PROGRAMMED AND READY TOYOUR THERMOSTAT IS NOW PROGRAMMED AND READY TO
PROVIDE MAXIMUM COMFORT AND EFFICIENCY!PROVIDE MAXIMUM COMFORT AND EFFICIENCY!

PROVIDE MAXIMUM COMFORT AND EFFICIENCY!

PROVIDE MAXIMUM COMFORT AND EFFICIENCY!PROVIDE MAXIMUM COMFORT AND EFFICIENCY!

Enter Heating ProgramEnter Heating Program

Enter Heating Program for entering your cooling

Enter Heating ProgramEnter Heating Program
program, using your selected cooling times and tempera­tures.

CHECK YOUR PROGRAMMINGCHECK YOUR PROGRAMMING

CHECK YOUR PROGRAMMING

CHECK YOUR PROGRAMMINGCHECK YOUR PROGRAMMING

time and temperature. Each time you press PRGM, the
next heating period time and temperature will be display­ed in sequence for each weekday, then Saturday and
Sunday program periods (you may change any time or
temperature during this procedure).

RUN to begin program operation.

or menu data. With two optional "AA" batteries installed,
your thermostat will maintain time and continuously
display the temperature during a loss of AC power.
Installed batteries will also allow programming prior to
installation.

COOLCOOL

COOL position.

COOLCOOL

HEAT HEAT

HEAT position.

HEAT HEAT

COOL COOL

COOL position.

COOL COOL

HEAT HEAT

HEAT or

HEAT HEAT

COOL COOL

COOL and press

COOL COOL

TROUBLESHOOTINGTROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTINGTROUBLESHOOTING

Reset OperationReset Operation

Reset Operation

Reset OperationReset Operation

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

RR

stat by removing the wires from terminals
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.

Possible CausePossible Cause

Possible Cause

SymptomSymptom

Symptom

SymptomSymptom

No Heat/No Cool/No FanNo Heat/No Cool/No Fan

No Heat/No Cool/No Fan

No Heat/No Cool/No FanNo Heat/No Cool/No Fan
(common problems)(common problems)

(common problems)

(common problems)(common problems)

No HeatNo Heat

No Heat

No HeatNo Heat

Possible CausePossible Cause

1. Blown fuse or tripped circuit breaker.

2. Furnace power switch to OFF.

3. Furnace blower compartment door or
panel loose or not properly installed.

1. Pilot light not lit.

2. SYSTEM button not set to

3. Loose connection to thermostat or
system.

4. Furnace Lock-Out Condition. Heat
may also be intermittent.

5. Heating system requires service or
thermostat requires replacement.

CC

R and

C and removing batteries for 2 minutes. After resetting the thermostat, replace

RR

CC

Corrective ActionCorrective Action

Corrective Action

Corrective ActionCorrective Action

Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage
safety interlock or door switch.

Re-light pilot.

HEATHEAT

HEAT.

HEATHEAT

Press SYSTEM button to
above room temperature.
Verify thermostat and system wires are securely
attached.
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 service person for assistance.
Diagnostic: Press SYSTEM button to
raise the setpoint above room temperature. Within a
few seconds the thermostat should make a soft click

HEATHEAT

HEAT and raise setpoint

HEATHEAT

HEATHEAT

HEAT and

HEATHEAT

10

TROUBLESHOOTINGTROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTINGTROUBLESHOOTING

SymptomSymptom

Symptom

SymptomSymptom

No Heat (continued)

No Cool

Heat, Cool or Fan
Runs Constantly

Possible CausePossible Cause

Possible Cause

Possible CausePossible Cause

5.Heating system requires service or
thermostat requires replacement.

(continued)

1.SYSTEM button not pressed to COOL.

2.Loose connection to thermostat or
system.

3.Cooling system requires service or
thermostat requires replacement.

1.Possible short in wiring.

2.Possible short in thermostat.

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

4.FAN Switch set to Fan On.

Corrective ActionCorrective Action

Corrective Action

Corrective ActionCorrective Action

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 service
person to verify the heating is operating correctly.

Press SYSTEM button to COOL and lower setpoint
below room temperature.
Verify thermostat and system wires are securely
attached.
Same procedure as diagnostic for No Heat condition
except set the thermostat to COOL and lower the
setpoint below the room temperature. There may be
up to a five minute delay before the thermostat clicks
in Cooling.

Check each wire connection to verify they are not
shorted or touching together. No bare wire should
stick out from under terminal screws. 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.

Furnace
(Air Conditioner)
Cycles Too Fast
or Too Slow (narrow or
wide temperature swing)

Thermostat Setting &
Thermostat Thermometer
Disagree

Blank Display and/or
Keypad Not Responding

Heat Setpoint will
not Respond to the
Temperature Up Key

Cool Setpoint will
not Respond to the
Temperature Down Key

Forgot Keypad
Lockout Code

1.The location of the thermostat and/or
the size of the Heating System may
be influencing the cycle rate.

1.Thermostat thermometer setting
requires adjustment.

1.Voltage spike or static discharge.

1.The desired setpoint conflicts with the
setpoint of the COOL mode.

1.The desired setpoint conflicts with the
setpoint of the HEAT mode.

Digital thermostats normally provide precise tem­perature control and may cycle faster than some
older mechanical models. A faster cycle rate means
the unit turns on and off more frequently but runs for
a shorter time so there is no increase in energy use.
If you would like to increase the cycle time, choose
SL for slow cycle in the menu, step 4. If an accept­able cycle rate is not achieved as received or by
choosing slow cycle, contact a local service person
for additional suggestions.

The thermometer can be adjusted +/- 4 degrees.
See Temperature Display Adjustment in the Configu­ration Menu section.

Use the Reset Operation at top of previous page.

Change system mode to COOL. Raise the Cool
setpoint. Return to HEAT mode and set desired
temperature.

Change system mode to HEAT. Lower the Heat
setpoint. Return to COOL mode and set desired
temperature.

CAUTION: This resets the thermostat to factory
default settings of the configuration menu. After
performing this reset, the thermostat will require
configuration again. Be sure that you know the
required configuration settings before resetting.

With the thermostat in any mode, press
the same time to enter the configuration menu at the
point where the lockout code is to be entered. Press

and at

11

TROUBLESHOOTINGTROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTINGTROUBLESHOOTING

SymptomSymptom

Symptom

SymptomSymptom

Forgot Keypad
Lockout Code (continued)

Why won’t my 2nd or
3rd stage come on?

FF

AA

QQ

F

A

Q

FF

AA

QQ

SymptomSymptom

Symptom

SymptomSymptom

My thermostat is reading in Celsius.
How do I change it to Fahrenheit?

Do I have to program a stop time for each
program period?

My thermostat does not follow it’s
program. What should I do?

Possible Cause

First stage is keeping up with demand.

Corrective ActionCorrective Action

Corrective Action

Corrective ActionCorrective Action

and and SYSTEM button at the same time
to reset the lockout code, unlock the keypad and
reset all configuration menu settings.

Your thermostat is designed to determine the
optimum time to activate the second stage. Simply
raising the temperature in heating or lowering it in
cooling will not always force the thermostat to
bring the second stage on quickly. There is a time
delay from 0-30 minutes depending on the
performance of the first stage of the system.

Corrective Action

Your thermostat display can be set to display temperature in Fahrenheit or
Celsius. This option can be set in the INSTALLER/CONFIGURATION MENU
of your thermostat. See page 6 step 12.

There is no need to select a time to stop a programming period. Starting a
new programming period will stop the previous program period.

Unless the thermostat appears to be damaged it will follow the program that is
in the memory. The most common reason a thermostat will appear not to be
following the program is a programming error. Verify that the AM or PM
settings are correct for each period. Also verify that the Day of the week is set
correctly. Models with EMR (Energy Management Recovery) start early to
make the temperature they are programmed for by the time specified in the
program. See the CONFIGURATION MENU on page 6 step 3.

Between heating and cooling seasons,
I want to turn my system off. Will this
change my program?

My display light does not work. Can it be
fixed or replaced?

Do I have to reprogram my thermostat
after I change the batteries?

My setpoint temperature is flashing. What
does that mean?

How can I get a copy of the Operating
Manual for my thermostat?

My program or configuration menu is all
messed up, how do I start from the
beginning?

Any time you wish to turn your system off, simply press the SYSTEM button
until “OFF” is displayed. This will not affect your thermostat’s programming in
any way. To turn the system back on, press the SYSTEM button to HEAT or
COOL and press RUN. The system will begin operating according to the
current thermostat program. See under OPERATION page 8 & 9.

Because it is soldered to the circuit board it is not possible to repair or
replace.

No. This thermostat has permanent memory, although you will have to reset
your clock.

When the thermostat compressor time delay occurs it will flash the setpoint
for about five minutes. This is intended to help protect the compressor from
short cycling.

Visit our website at www.white-rodgers.com for operating manuals.

You can perform software reset by pressing
simultaneously when SYSTEM mode is OFF. See “Forget Keypad Lockout

Code” under “TROUBLESHOOTING” for details.

and SYSTEM buttons

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trademark and service mark
of Emerson Electric Co.