White Rodgers 1F89EZ-0251 User Manual

Emerson Blue Easy Set

3 Simple Pre-Sets

2H/1C

Non-Programmable Thermostat with 3 Temperature Pre-Sets

Home, Sleep and Away

Installation Instructions and User Guide

Message to Homeowner

Congratulations on choosing the Emerson Blue Easy Set
Thermostat. The Easy Set is designed to be the easiest
thermostat you have ever used. This thermostat features
Home, Sleep, and Away temperature pre-sets. Just press
the button and go. Included with the easy set is the same
temperature accuracy and reliability you expect from all the
Emerson Blue thermostats.

Model: 1F89EZ-0251
Heat Pump

Table of Contents

Get to know your thermostat .......................................2

Thermostat buttons and switches ...............................2

Display .........................................................................2

Batteries ......................................................................2

Using your thermostat .................................................3

Home, Sleep and Away temperature pre-sets ............3

Sleep Timer option ......................................................3

Change Filter reminder option ....................................3

Cool Savings option ....................................................3

Installation .....................................................................4

Remove the old thermostat .........................................4

Install the new thermostat ...........................................4

Set switches ................................................................4

Check thermostat operation ........................................4

 Selectcongurationoptions ........................................5

 Congurationmenu .....................................................5

Troubleshooting Guide ................................................6

Technical Data ...............................................................7

Wiring diagrams ..........................................................7

Thermostat application guide ......................................8

 Specications ..............................................................8

Just Press the Button and Go!

This thermostat is intended for use with a low voltage NEC
Class II system. Do not use this thermostat with a line voltage
system. If in doubt about whether your wiring is millivolt, line,
or low voltage, have it inspected by a qualified heating and air
conditioning contractor or electrician.

Do not exceed the specification ratings.

All wiring must conform to local and national electrical codes
and ordinances.

This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could
cause the control to malfunction.

www.white-rodgers.com

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PART NO. 37-7208A

1050

Get to know your thermostat

1

2

3

4

5

6

7

8

9

10

Figure 1. Thermostat buttons and switches

Set at

Home

2

1

3

4

5

6

10

14

7

9

12

13

11 15

8

Set at

Home Sleep

Away

AUX

EMER

Service
Change

Save
Change Filter

11

12

13

14

15

“AA” Alkaline Batteries

CAUTION

!

WARNING

!

Before you begin using your thermostat, you should be familiar
with its features and with the display and the location and
operation of the thermostat buttons and switches.

The Thermostat Buttons and Switches

Raises temperature setting.

Lowers temperature setting.

Easy Temperature pre-sets (Home, Sleep, Away).
SYSTEM switch (COOL, OFF, HEAT, EMER).
FAN switch (ON, AUTO).

The Display

Indicates desired temperature. This is blank when

system switch is in the OFF position. Desired
temperature is displayed (flashing) if the thermostat is in
lockout mode.

“Save” indicates the Cool Savings feature is enabled

in the configuration menu. “Save” flashing indicates
Cool Savings feature is operating and saving energy.
“Save” will also flash for 3 seconds after changing the
temperature to indicate that a pre-set can be saved.

Indicates system mode. Heat icon ( ) is displayed when

the SYSTEM switch is in the HEAT position. Heat icon( )
is displayed flashing when thermostat is calling for heat.
Cool icon ( ) is displayed when the SYSTEM switch is in
the COOL position. Cool icon ( ) is displayed (flashing) if
the thermostat is calling for cool.

Displays current temperature.
“Home”, “Sleep”, “Away” indicates the easy temperature

pre-set is enabled.

“Change Filter” is displayed when the system has run

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

“Service” indicates a diagnostic fault in the heating/cooling

system. It does not indicate a fault in the thermostat.

“ ” indicates power level of batteries. “Change ”

indicates batteries should be replaced.

“AUX” indicates auxiliary stage is operating.

“EMER” is displayed flashing when the system switch is

in EMER position.

Batteries

Two “AA” alkaline batteries are included with your thermostat.
Prior to use, open the battery door and remove the battery
tag. We recommend replacing batteries every 2 years, for
best results, use new premium brand alkaline batteries such
as Duracell® or Energizer®. When battery power remaining is
approximately half, the will be displayed.

Indicates batteries are low
and should be replaced

Change

Do not use on circuits exceeding specified voltage.

BATTERY LOCATION

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

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

If the home is going to be unoccupied for an extended
period (over 3 months) and is displayed, the
batteries should be replaced before leaving. When
less than two months of battery life remain, the
setpoint temperature will change by 10 degrees (10
degrees cooler in Heat / 10 degrees warmer in Cool)
to alert you to change the batteries before they fail. If
the temperature change occurs, the normal setpoint
can be manually reset. However, the temperature will
change by 10 degrees within two days if the batteries
are not replaced.

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

Thermostat installation and all components of the system
shall conform to Class II (current limited) circuits per the
NEC code. Failure to do so could cause a fire hazard.

2

Using your thermostat

SLEEP

SLEEP

Home, Sleep and Away Temperature
Pre-Sets

You can set your (Home, Sleep, Away) temperatures for use
when you get home, go to sleep, or leave home. Then, just
press the button you want and go.

Favorite Temperatures are set at the factory as indicated in
the following table. You can use pre-sets or change to different
temperature pre-sets.

Factory Pre-set Temperatures

HEATING COOLING

70o F 75o F

62o F 78o F

62o F 83o F

Your Pre-set Temperatures

HEATING COOLING

Change Home, Sleep and Away

Temperature Pre-sets

1. Move SYSTEM switch to HEAT position.

2. Using the

3. Press and hold the Home, Sleep, or Away button for 3
seconds. The display will go blank (except for the battery
icon and heat/cool icon) and back on again indicating that
the thermostat has saved your pre-set.

4. Repeat the process for the remaining Pre-sets to be
changed.

5. Move SYSTEM switch to COOL to Pre-set Temperatures
for cooling.

Use Home, Sleep and Away Temperature Pre-Sets

1. Press the Home, Sleep, or Away button. The display
will show the icon for the button pressed and display the
temperature setting.

2. The thermostat will maintain the selected pre-set
temperature until you change it by pressing the or
button or selecting another Pre-set Temperature.

or button, set the desired temperature.

Sleep Timer Option

The sleep timer will automatically change the thermostat from the Sleep to Home temperature after the number of hours set in
the configuration menu. The Sleep timer default is 8 hours and can be changed to a setting between 1 to 12 hours.

Example: You have selected 8 hours for the Sleep timer in the configuration menu. Press the Sleep button, the thermostat will
maintain the sleep temperature for 8 hours. After 8 hours the thermostat will go back to the Home temperature. The Sleep timer
will be activated each time the sleep button is pressed.

Change Filter Reminder Option

The thermostat can display a reminder when it is time to change the air filter on your heating and cooling system. The Change
Filter will automatically display after the number of hours set in the configuration menu. The change filter reminder time default
is 200 hours and can be changed to a setting of 25 to 1975 hours; 200 hours is approximately 3 months.

Example: You have selected 250 hours for the change filter reminder. The thermostat will display change filter after 250 it has
counted down 250 hours. When “Change Filter” is displayed, press the
timer.

or button to clear the display and restart the

Cool Savings™ Option

With Cool Savings enabled, the thermostat will make small adjustments to the desired temperature during periods of high
demand to reduce cooling system running time and save energy. When the cooling system has been running for more than
20 minutes, humidity in the home will be lower and a higher temperature will feel comfortable. After 20 minutes of run time,
the thermostat will start increasing the desired temperature in steps of less than one degree as the system continues to run.
These adjustments will eventually cause the system to satisfy the thermostat and turn the system off to reduce the energy
consumption. When the Cool Savings feature is active and making adjustments, the display will flash “Save”. The amount of
adjustments to the desired temperature is dependent on the Cool Savings value that is set, 1 being the least adjustment and 6
being the most adjustment. With this feature set to OFF, no change will occur when the cooling system is continuously running
during the periods of high demand. Periods of high demand will normally occur during the late afternoon and early evening on
the hottest days of the summer.

3

NOTE

Installation

R

C

O/B

W2

Y

G

L

Insert
Wire

Press down

Mounting

Hole

Mounting

Hole

Opening
for wires

O/B

Switch

Battery

Door

FA N

(Ele/Gas)

Switch

Remove the Old Thermostat

1. Turn off power to the heating and cooling system.

2. Remove the front cover of the old thermostat, this usually
pulls off.

3. Loosen the screws that hold the thermostat to the wall.

4. Identify each wire attached to the old thermostat.

5. Disconnect the wires from old thermostat one at a time. DO

NOT LET WIRES FALL BACK INTO THE WALL.

Install the New Thermostat

1. Open the battery door and detach the new thermostat
cover from the base.

2. With the base flush against the wall, mark mounting hole
locations on wall.

3. Move base out of the way and drill mounting holes.

4. Push wires through wire opening.

5. Position the base on the wall again and screw the mounting
screws into the wall anchors.

6. Connect each wire coming from the wall to its corresponding
terminal as shown in Fig. 2 on page 7.

Figure 1. Thermostat Base

Set Switches

Fan (Ele/Gas) Switch

For Electric Heat, heat pump or any system that requires the
thermostat to turn on the blower on a call for heat– place the
FAN (Ele/Gas) switch (Fig. 1) in the ON position. For Auxiliary
and Emergency Heat systems that have a fan control to turn
on the blower (independent of the thermostat) place switch in
the OFF position.

Wire Terminal Block

Wires will not be connected to all terminals of the terminal
block.

Check Thermostat Operation

Heating System

1. Move SYSTEM switch to HEAT position. If the heating
system has a standing pilot, be sure to light it.

2. Press to adjust thermostat setting to 1° above room
temperature. The heating system should begin to operate.

3. Press to adjust temperature setting below room
temperature. The heating system should stop operating.

Fan Operation

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

1. Move SYSTEM switch to OFF position.

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.

O/B Terminal Switch Selection

The O/B switch on this thermostat is factory set to the “O”
position. This will accommodate the majority of heat pump
applications, which require the changeover relay to be
energized in COOL. If the thermostat you are replacing or the
heat pump being installed with this thermostat requires a “B”
terminal, to energize the changeover relay in HEAT, the O/B
switch must be moved to the “B” position.

Cooling System

1. Move SYSTEM switch to COOL position.

2. Press

to adjust thermostat setting below room
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. However, if the
setpoint temperature is flashing, the compressor lockout
feature is operating (see Configuration menu, item 5).

3. Press to adjust temperature setting above room
temperature. The cooling system should stop operating.

Emergency System

EMER bypasses the Heat Pump to use the heat source wired
to terminal W2 on the thermostat. EMER is typically used
when compressor operation is not desired, or you prefer back­up heat only.

1. Move SYSTEM switch to EMER position, EMER will flash
on the display.

2. Press

to adjust the thermostat above room tempera­ture. The Aux heating system will begin to operate. The
Flame icon ( ) will display flashing to indicate that the
Aux system is operating.

3. Press to adjust the thermostat below room tempera­ture. The AUX heating system should stop operating

4

Installation

SYSTEM

Press
and hold
for 3 seconds

Select Configuration Options

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

Menu Screen

Number

01

02

03

04

05

06

07

08

09

10

11

12

13

Enter Menu

Displayed

(Factory Default)

Sleep
(OFF)

h

(8)

CS

(OFF)

CS

(3)

CR

(FA)

CR

Aux

(FA)

CL

(OFF)

L

(On)

Room Temp

(0)

o

F

FH

(On)

Change Filter

(OFF)

Change Filter

(200 h)

Menu Navigation

Press

for next. Press to go back

Configuration Menu

Press

to select options

or

On Select Sleep Timer On or OFF

If selected OFF, skip to menu screen 04

1 to 12 Select 1 to 12 hours for Sleep Timer On.

See Sleep Timer section on page 3

On Select Cool Savings Feature On or OFF

If selected OFF, skip to menu screen 06

1 to 6 Select 1 to 6 for Cool Savings Feature On

See Cool Savings section on page 3

SL Select Adjustable Anticipation, cycle rate for Heat Pump, Heat

and Cool. See table below

FA Select Adjustable Anticipation, cycle rate for Aux./Emer Heat.

See table below

On Select Compressor Lockout OFF or On. When selected On,

the thermostat will wait 5 minutes before turning the
compressor on.

OFF Select Display Light On of OFF. When selected On and the “C”

terminal is connected, the backlight will stay on continuously.
When OFF the backlight will come on for a short time when any
key is pressed.

4 LO to

4 HI

o

C Select oF or oC Display (temperature displayed in Fahrenheit or

OFF Select fast second stage On or OFF

On Select filter maintenance indicator OFF or On.

25 to 1975 Select 25 to 1975 hours for Change Filter reminder

Select room temperature display for 4
the actual temperature

Celsius)

If selected OFF, item B will be skipped

See Change Filter reminder section on page 3

o

higher or 4o lower than

To exit the menu: Set the system switch to Cool or Heat. If
no keys are pressed within fifteen minutes, the thermostat will
revert to normal operation.

Select Cycle Rate – The cycle rate can be adjusted to keep
the heat or cool on longer or shorter to match the temperature
response of the home with your heating and cooling system.

MODE Fast Slow
(FA) (SL)

Heat Pump 1.2oF 1.7oF

Aux./Emer Heat .8oF 1.2oF

5

Troubleshooting

Reset Operation

If a voltage spike or static discharge blanks out the display or
causes erratic thermostat operation, you may need to reset
the thermostat. To reset, the System Switch must be in Cool,

HEAT, or EMER. Simultaneously hold the and buttons

Symptom Possible Cause Corrective Action

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

No Heat

No Cool

Heat, Cool or Fan Runs
Constantly

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

Cooling Cycles Too Fast
or Too Slow (narrow
or wide temperature
swing)

Thermostat Setting and
Thermometer Disagree

Blank Display and/or
Keypad Not Responding

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. System Switch not set to Heat.

2. Loose connection to thermostat or
system

3. Heating System requires service or
thermostat requires replacement.

1. System Switch not set 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.

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

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

1. Thermostat thermometer setting
requires adjustment.

1. Voltage Spike or Static Discharge. If a voltage spike or static discharge occurs use the Reset

for approximately 10 seconds until the display goes blank. If
the thermostat has power, has been reset and still does not
function correctly contact your heating/cooling service person
or place of purchase.

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

Set System Switch to Heat and raise setpoint above room
temperature.
Verify thermostat and system wires are securely attached.

Diagnostic: Set System Switch to Heat and raise the
setpoint above room temperature. Within a five minutes
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 system is operating correctly.

Set System Switch 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 if the
compressor lock-out option is selected in the configuration
menu.

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 below. 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.

The cycle rate adjustment can be found in the configuration
menu. If an acceptable cycle rate is not achieved using the
FA (Fast) or SL (Slow) adjustment contact a local service
person for additional suggestions.

The cycle rate for cooling is fixed and can not be adjusted.
Contact a local service person for suggestions.

The thermometer can be adjusted +/- 4 degrees as listed
in the Configuration Menu. No other adjustment is possible.

Operation listed above.

6

Technical Data

L

R

C

24 VAC

120 VAC

Hot

SYSTEM

MONITOR

SWITCH

Neutral

THERMOSTAT

SYSTEM

G W2

TRANSFORMER

(Class II Current Limited)

Changeover

Relay*

YO/B

Compressor

Contactor

Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position

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.

Aux/Emergency

Heat Relay

(Stage 2)

Fan

Relay

**

*

**

L

R

C

24 VAC

120 VAC

Hot

SYSTEM

MONITOR

SWITCH

Neutral

THERMOSTAT

SYSTEM

G W2

Figure 2. Typical wiring diagram for single transformer systems

TRANSFORMER

(Class II Current Limited)

YO/B

Aux/Emergency

Heat Relay

(Stage 2)

Fan

Relay

**

THERMOSTAT APPLICATION GUIDE

Thermostat

Configuration

Options

Heat Pump 1

Single Stage

Compressor Heat

Pump (HP)

Thermostat

Applications

Single Stage Compres-

sor Heat Pump Systems

- with Aux./Emergency
Heat

Maximum

Stages

Heat/Cool

2/1

This product does not contain mercury. However, this product
may replace a unit which contains mercury.

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

ATTENTION!

Mercury must not be discarded in household trash. When the
unit this product is replacing is to be discarded, place in a
suitable container. Refer to www.white-rodgers.com for location
to send the product containing mercury.

Specifications

Electrical Rating:

Battery Power or Hardwire ................................. 20 to 30 VAC, 50/60 Hz or DC

Terminal Load ............................................................ 1.5 A per terminal, 2.5 A maximum all terminals combined

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

Differential Fast Slow

Heat Pump ......................................................... 1.2°F 1.7°F

Aux./Emer Heat .................................................. .8°F 1.2°F

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

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

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

Dimensions Thermostat ............................................. 3-3/4” H x 4-3/4” W x 1-1/2” D

7

White-Rodgers is a division
of Emerson Electric Co.

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

Homeowner Help Line: 1-800-284-2925

www.white-rodgers.com

www.emersonclimate.com