White-rodgers 1F83-277 User Manual

1F83-2771F83-277

1F83-277

1F83-2771F83-277

Heating & Air Conditioning

Non-programmable, Auto Changeover, Multi-Stage/Heat

Pump Thermostat

INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS

OperOper

Oper

OperOper

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE­FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-

FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-

FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER­SONAL INJURY AND/OR PROPERTY DAMAGE.SONAL INJURY AND/OR PROPERTY DAMAGE.

SONAL INJURY AND/OR PROPERTY DAMAGE.

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

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

!

To prevent electrical shock and/or equipment damage,To prevent electrical shock and/or equipment damage,

To prevent electrical shock and/or equipment damage,

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

disconnect electric power to system at main fuse or

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

circuit breaker box until installation is complete.

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

aa

tortor

::

a

tor

:

aa

tortor

::

CAUTION

Sa Sa

Sa

Sa Sa

vv

e these instre these instr

v

e these instr

vv

e these instre these instr

1F83-2771F83-277

1F83-277

1F83-2771F83-277

uctions fuctions f

uctions f

uctions fuctions f

Assemble tools required as shown below.

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

REMOREMO

REMO

REMOREMO

or futuror futur

or futur

or futuror futur

FLAT BLADE SCREWDRIVER

VING OLD VING OLD

VING OLD

VING OLD VING OLD

e use!e use!

e use!

e use!e use!

PREPPREP

PREP

PREPPREP

ARAARA

TIONSTIONS

ARA

TIONS

ARAARA

TIONSTIONS

WIRE CUTTER/STRIPPER

THERMOSTTHERMOST

THERMOST

THERMOSTTHERMOST

AA

A

AA

TT

T

TT

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 refer to www.white-rodgers.com for the
location to send product containing mercury.

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. 37-6509EPART NO. 37-6509E

PART NO. 37-6509E

PART NO. 37-6509EPART NO. 37-6509E

Replaces 37-6509D

0818

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.

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 Wall

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.

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

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” alkaline batteries.

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

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.

Battery Location

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.

If “BATT” is displayed, the batteries are low and should be
replaced. For best results, replace all batteries with new
premium brand alkaline batteries such as Duracell
Energizer

®

. To replace batteries, press system button to

OFF, install the 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

NOTE

Aux

Heat

Relay

E/W1

Emergency

Heat

Relay

CY1

*

SYSTEM

MONITOR

SWITCH

24 VAC

(Class II Current Limited)

L

TRANSFORMER

®

or

THERMOSTAT

R

SYSTEM

Hot

120 VAC

Neutral

TAPE OFF!

HOT

120 VAC

NEUTRAL

CUT AND

24 VAC

O

Reversing

Val ve

Energized in

Cool Mode

B

Reversing

Val ve

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)

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” alkaline batteries.

Hot

120 VAC

Neutral

WIRING DIAWIRING DIA

WIRING DIA

WIRING DIAWIRING DIA

GRAMSGRAMS

GRAMS

GRAMSGRAMS

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

Switches

Limit or

Safety

Switches

Limit or

Safety

24 VAC

24 VAC

ACCESSORY

RELAY N.O.

CONTACT

COMMON

24 VAC 120 VAC

Heat Pump Transformer

(Class II Current Limited)

THERMOSTAT

SYSTEM

Auxiliary

Heating

Transformer

(Class II

Current Limited)

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” 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 1. Single stage compressor system; gas
or electric backup.

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

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

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 section for proper thermostat configu­ration.

Y2Y2

Y2

Y2Y2

Y1Y1

Y1

Y1Y1

GG

G

GG

OO

O

OO

BB

B

BB

Heat Fault 24 Volt 24 Volt Heat Mode Emergency No Heat and Blower/Fan Energized Energized Energized
Pump 1 Indicator (Common) (Hot) 2nd stage, Mode Output Cool mode on call for Heat in Cool in Heat

Heat Malfunction Mode 2nd 2nd (compressor) Set GAS/ELEC switch Emergency
Pump 2 Switch stage stage for Emergency mode mode

or System Emergency 1st stage 1st stage and Cool Mode OFF

Heat Mode compressor

3rd stage,

Emergency

Mode 2nd

stage

*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” alkaline batteries.

O

Reversing

Val ve

Energized in

Cool Mode

B

Reversing

Val ve

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” alkaline batteries.

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 electric heat, the G terminal (blower/fan) will be
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

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

THERMOSTAT TERMINALS (MULTI-STAGE)

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

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” alkaline batteries.

LL

L

LL

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

C*C*

C*

C*C*

RR

R

RR

W2W2

W2

W2W2

E/W1E/W1

E/W1

E/W1E/W1

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,
see CONFIGURATION section for proper thermostat configu­ration.

Y2Y2

Y2

Y2Y2

Y1Y1

Y1

Y1Y1

GG

G

GG

Heat if configured Mode Emergency

to Electric Heat) Modes

OO

O

OO

BB

B

BB

CHECK CHECK

CHECK

CHECK CHECK

THERMOSTTHERMOST

THERMOST

THERMOSTTHERMOST

AA

T OPERAT OPERA

A

T OPERA

AA

T OPERAT OPERA

TIONTION

TION

TIONTION

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 service person.

Fan Operation

If your system does not have a G terminal connection, skip to
Heating System.

1. Turn on power to system.

2. Move FAN switch to ON position. The blower should be­gin to operate.

3. Move FAN switch to AUTO position. The blower should
stop immediately.

CAUTION

!

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 least 5and the system has not been operational for at least 5

and the system has not been operational for at least 5

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

minutes.

minutes.minutes.

Heating System

1. Press SYSTEM button to select the Flame icon ( ). If
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 “STG1”. However, if
the 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 “STG1+2”.

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

to adjust thermostat setting to 1° above room

to adjust the thermostat below room tempera-

Emergency System

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. “EMER” will flash
on the display.

2. Press
temperature. The Aux. heating system will begin to
operate. The display will show “STG1” flashing “EMER”

and Flame icon (
operating.

3. Adjust temperature setting to 3° above room temperature.
The auxiliary heat system should begin to operate and
the display should show “STG1+2”.

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

To prevent compressor and/or property damage, if theTo prevent compressor and/or property damage, if the

To prevent compressor and/or property damage, if the

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

outdoor temperature is below 50°F, DO NOT operate

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

the cooling system.

the cooling system.the cooling system.

to adjust thermostat setting above room

) to indicate that the Aux. system is

to adjust the thermostat below room tempera-

CAUTION

!

Cooling System

1. Press SYSTEM button to select the Snowflake icon ( ).

2. Press
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. The display
should show “STG1”.

3. Adjust temperature setting to 3° below room temperature.
The second stage cooling should begin to operate and
the display should show “STG1+2”.

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

to adjust thermostat setting below room

to adjust the temperature setting above room

4

Before you begin programming your thermostat, you should be

EMER

FAULT

STG1+2

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 Switches

Raises temperature setting

1

Lowers temperature setting.

2

FAN switch (ON, AUTO)

3

SYSTEM button (COOL, AUTO, HEAT, EMER, OFF)

4

The Display

Flame icon ( ) is displayed when the system is in

5

HEAT mode. Snowflake icon (

the system is in COOL mode. Flame icon ( ) and
Snowflake icon (
when thermostat is in AUTO mode.

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

6

and should be replaced. Only “BATT” and “LO” in the
minutes field are displayed when batteries are low and
with no system power.

Displays current temperature or “LO” in the minutes

7

field when batteries are low.

Displays set temperature (this is blank when SYSTEM

8

is OFF).

Displays “FLTR” when the system has run for the

9

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

Display ( ) when in keypad lockout mode.

10

) are displayed simultaneously

) is displayed when

OPERAOPERA

OPERA

OPERAOPERA

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

“FAULT” will be displayed when there is a malfunction

12

in the HEAT/COOL system.

Display ( ) when limited HEAT/COOL range is activated.

13

” icon will flash if an attempt is made to adjust

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

Stage 1 & 2 indicators: The thermostat shall indicate

14

when the first and second stage is energized except
in emergency mode. The icon is “STG 1” for the first
stage energized. The icons for the first and second
stage energized are “STG1+2” located in the upper
right side of the display.

TIONTION

TION

TIONTION

“EMER” is displayed flashing when the system is in

11

EMER mode.

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

Set SYSTEM button to OFF, then simultaneously press

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 to change to the next menu item. To exit the
menu and return to the program operation, press RUN. If no
keys are pressed within fifteen minutes, the thermostat will
revert to normal operation.

CONFIGURACONFIGURA

CONFIGURA

CONFIGURACONFIGURA

1) Single Stage, Multi-stage or Heat Pump System

Configuration – This control can be configured for Heat

Pump or two stage heat/two stage cool multi-stage opera­tion. The display indicates “MS 2” (default for multi-stage
mode) in the display. The Multi-stage configuration can be
toggled to “SS1”, “HP2”, or “HP1” by pressing the

key. In Multi-stage configuration, SYSTEM button will not

have EMERgency mode.

2) Fast or Slow Cycle Selection – The factory default setting

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.

TION MENUTION MENU

TION MENU

TION MENUTION MENU

or

5

CONFIGURACONFIGURA

CONFIGURA

CONFIGURACONFIGURA

TION MENUTION MENU

TION MENU

TION MENUTION MENU

Press the SYSTEM button until OFF is displayed, then press the and simultaneously

INSTALLER/CONFIGURATION MENU

Press Displayed Press or

Step Button(s) (Factory Default) to select Comments

1 System MS 2 SS1, HP2, HP1 Selects Single stage, Multi-stage, or Heat Pump

(Single stage or 2-stage) System Configuration

2 System FA SL Selects Fast or Slow Cycle Selection

3 System CL CL Selects Compressor Lockout CL OFF or ON

(OFF) (ON)

4 System CDL CDL Selects Backlight Display

(ON) (OFF)

5 System FA FA Selects Fast Second Stage ON or OFF

(ON) (OFF)

6 System 0 FLTR 50-1950 (increments of 50) Selects filter replacement run time

7 System 0°F 4 LO to 4 HI Selects Temperature Display Adjustment 4 LO to 4 HI

(Room Temperature)

8 System °F °C Selects temperature display F° or °C selection

9 System AU On OFF Selects AUTO Mode ON or OFF

(Not available on earlier models)

10 System LR LR 62 to LR89 Selects Limited HEAT range

(90)

11 System LR LR 46 to LR 82 Selects Limited COOL range

(45)

12 System CA CA Feature Not Available

(OFF) (ON)

13 System (ON) Selects Keypad Lockout

(OFF)

14 System 0 001 to 999 Selects Keypad lockout combination number

Press System to set code

15 System Returns to the OFF position

3) Select Compressor Lockout CL OFF or ON – Selecting
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.

4) Select Backlight Display – The display backlight improves
display contrast in low lighting conditions. When the C
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
C terminal is not powered, this selection has no effect.

5) Select (Fast) Second Stage ON or OFF – In the run mode,
if the setpoint temperature is manually raised by 3°F (2°C)
or more above the actual temperature with the , and 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.

6

CONFIGURACONFIGURA

CONFIGURA

CONFIGURACONFIGURA

TION MENUTION MENU

TION MENU

TION MENUTION MENU

6) Select filter replacement run time – The thermostat will
display FLTR after a set time of operation. This is a remind-
er to change or clean your air filter. This time can be set from
0 to 1950 hours in 50 hour increments. A selection of 000
will cancel this feature. When “FLTR” is displayed, you
can clear it by pressing SYSTEM. This resets the timer and
starts counting the hours until the next filter change. Contact
your system manufacturer for a specific replacement/main
tenance interval.

7) Select 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.

8) Select F° or C° Readout – Changes the display readout
to Centigrade or Fahrenheit as required.

9) Selected Auto mode – This control will feature AUTO
changeover mode when AU on is selected (default). Press

or keys (not available on earlier models) to defeat

the
the auto changeover mode (OFF).

10)Limited Heat Range – This feature provides a maximum
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.

11)Limited Cool Range – This feature provides a minimum
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.

12)This Feature Not Available.

13 & 14) Keypad Lockout – This menu selection will display

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 0 is 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
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

menu item displayed is the combination code 0. The

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.

first

or

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)

SPECIFICASPECIFICA

SPECIFICA

SPECIFICASPECIFICA

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

TIONSTIONS

TIONS

TIONSTIONS

7

OPERAOPERA

OPERA

OPERAOPERA

TIONTION

TION

TIONTION

The system "mode" is selected by pressing the SYSTEM
button. Icons on the bottom right corner of the display will
indicate the mode:

OFFOFF

or

OFF. In any mode except

OFFOFF
be shown on the right side of the display. In
be blank. 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.

Automatic System ChangeoverAutomatic System Changeover

Automatic System Changeover

Automatic System ChangeoverAutomatic System Changeover

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

COOL COOL

COOL (

COOL COOL

Second Stage Time DelaySecond Stage Time Delay

Second Stage Time Delay

Second Stage Time DelaySecond Stage Time Delay

AUTO AUTO

),

AUTO ( ),

AUTO AUTO

OFFOFF

OFF, the setpoint temperature will

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

HEAT HEAT

HEAT ( ),

HEAT HEAT

OFFOFF

OFF, this area will

OFFOFF

HEAT HEAT

HEAT setpoint and the

HEAT HEAT

EMEREMER

EMER,

EMEREMER

Flame Flame

Flame and

Flame Flame

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.

LOW BATTERY INDICATORLOW BATTERY INDICATOR

LOW BATTERY INDICATOR

LOW BATTERY INDICATORLOW BATTERY INDICATOR

If the 2 “AA” alkaline batteries are low and should be replaced,
the display will be blank except for “
mend replacing batteries every 2 years. If the home is going
to be unoccupied for an extended period (over 3 months),
the batteries should be replaced before leaving. When the
batteries are low, pressing any button will cause the display
to operated for ten seconds. After ten seconds, the display will
be blank except for “
batteries, but you can override setpoint temperature. After

LO BATTLO BATT

“

LO BATT” has been displayed for 4 weeks, the thermostat

LO BATTLO BATT
will raise the temperature 10 degrees above your setpoint in
COOL mode and will drop the temperature 10 degrees below
your setpoint in HEAT mode. If the “
continues, and when it reaches certain value, the thermostat
will turn off all the loads and “

LO BATTLO BATT

LO BATT”. You cannot program with low

LO BATTLO BATT

LO BATTLO BATT

LO BATT”. We recom-

LO BATTLO BATT

LO BATTLO BATT

LO BATT” condition

LO BATTLO BATT

LO BATTLO BATT

LO BATT” will flash.

LO BATTLO BATT

TRTR

OUBLESHOOOUBLESHOO

TR

OUBLESHOO

TRTR

OUBLESHOOOUBLESHOO

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 thermo­stat by removing the wires from terminals
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.

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

TINGTING

TING

TINGTING

RR

CC

R and

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

RR

CC

Possible CausePossible Cause

Possible Cause

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.

HEATHEAT

HEAT.

HEATHEAT

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.
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.

HEATHEAT

HEAT and raise setpoint

HEATHEAT

TRTR

OUBLESHOOOUBLESHOO

TR

OUBLESHOO

TRTR

OUBLESHOOOUBLESHOO

TINGTING

TING

TINGTING

Symptom

No Heat (continued)No Heat (continued)

No Heat (continued)

No Heat (continued)No Heat (continued)

No CoolNo Cool

No Cool

No CoolNo Cool

Heat, Cool or Fan
Runs Constantly

Possible Cause

5. Heating system requires service or
thermostat requires replacement.

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 Action

Diagnostic: Press SYSTEM button to
raise the setpoint above room temperature. Within a
few seconds the thermostat 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 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.

HEATHEAT

HEAT and

HEATHEAT

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

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.

TRTR

OUBLESHOOOUBLESHOO

TR

OUBLESHOO

TRTR

OUBLESHOOOUBLESHOO

TINGTING

TING

TINGTING

SymptomSymptom

Symptom

SymptomSymptom

Forgot Keypad
Lockout Code

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

Possible CausePossible Cause

Possible Cause

Possible CausePossible Cause

First Stage is keeping up with
demand

Corrective ActionCorrective Action

Corrective Action

Corrective ActionCorrective Action

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 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.

and at

FF

AA

QQ

F

A

Q

FF

AA

QQ

Symptom

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

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

My setpoint temperature is flashing.
What does that mean?

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

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.

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

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.

10

NONO

NO

NONO

TESTES

TES

TESTES

11

The Emerson logo is a
trademark and service mark
of Emerson Electric Co.

HOMEOWNER HELP LINE: 1-800-284-2925

St. Louis, Missouri Markham, Ontario

www.white-rodgers.com