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Blue Easy Reader Thermostat  
Single Stage, Multi-Stage, Heat Pump  
Installation and Operating Instructions for Model:  
Save these instructions for future use!  
Model  
Programming Choices  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS  
CAREFULLY BEFORE INSTALLING OR OPERATINGTHIS  
CONTROL COULD CAUSE PERSONAL INJURY AND/OR  
PROPERTY DAMAGE.  
Non-Programmable  
7 Day  
1F95EZ-0671  
APPLICATIONS  
THERMOSTAT APPLICATION GUIDE  
Maximum  
1F95EZ-0671 Thermostat  
Thermostat  
Thermostat  
Stages  
Configuration Options  
Applications  
Heat/Cool  
Gas, Oil, Electric, Heat Only,  
Cool Only or Heat/Cool  
Systems, 2 or 3 wire Hydronic  
Zone (Hot Water or Steam)  
Systems, 24 Volt or Millivolt  
Single Stage 1  
1/1  
2/2  
No Heat Pump (SS1)  
Multi Stage 2  
No Heat Pump (MS2)  
Heat Pump 1  
Single Stage Compressor  
Single Stage Compressor Heat Pump Systems - up to 2  
3/1  
4/2  
Heat Pump (HP1)  
Stages Aux./Emergency Heat  
Heat Pump 2  
Two Stage or Two  
Compressor Heat Pump  
(HP2)  
Two Stage or Two Compressor  
Heat Pump systems - up to 2  
Stages Aux./Emergency Heat  
SPECIFICATIONS  
Electrical Rating:  
Battery Power. . . . . . . . . . . . . . . . . . . . . . . . . . mV to 30 VAC, NEC Class II, 50/60 Hz or DC  
Input-Hardwire . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 VAC  
Terminal Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A per terminal, 2.5A maximum all terminals combined  
Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 99°F (7 to 32°C)  
Differential (Single Stage) . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F  
Differential (Multi-Stage) . . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F  
Differential (Heat Pump) . . . . . . . . . . . . . . . . . . . . . Heat 1.2°F; Cool 1.2°F  
Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . 32°F 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. . . . . . . . . . . . . . . . . . . . . . 4.2"H x 6.4"W x 1.7"D  
CAUTION  
ATTENTION: MERCURY NOTICE  
This product does not contain mercury. However, this  
product may replace a product that contains mercury.  
!
Topreventelectricalshockand/orequipmentdamage,  
disconnect electric power to system at main fuse or  
circuit breaker box until installation is complete.  
Mercury and products containing mercury must not be  
discarded in household trash. Do not touch any spilled  
mercury. Wearing non-absorbent gloves, clean up any  
spilled mercury and place in a sealed container. For  
proper disposal of a product containing mercury or a  
sealed container of spilled mercury, place it in a suitable  
shipping container. Refer to www.white-rodgers.com for  
location to send product containing mercury.  
Index  
Installation  
Page  
2
2
3
4
5
7
8
Wiring Connections  
Wiring Diagrams  
Thermostat Quick Reference  
Installer Configuration Menu  
Operating Your Thermostat  
Troubleshooting  
PART NO. 37-6986A  
0846  
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INSTALLATION  
Thermostat Power Method  
Switch Position/Description  
WARNING  
Thermostat installation and all components of the  
control system shall conform to Class II circuits per  
the NEC code.  
!
Battery Powered, no 24 Volt  
system power available.  
Switches "On", thermostat runs  
on batteries.  
Hardwired with Battery  
Back-up, for 24 Volt systems  
with common connection from  
transformer to "C" terminal on  
thermostat.  
Switches "On", thermostat  
runs on power directly from  
transformer with battery back-  
up.  
Remove Old Thermostat  
Before removing wires from old thermostat, mark wires for  
terminal identification so the proper connections will be made  
to the new thermostat.  
*Battery Powered with Power  
Stealing Assist, for 24 Volt  
systems with no common  
connection from transformer to  
"C" terminal on thermostat.  
Switches "On", thermostat runs  
on batteries and supplemental  
power drawn through the heat  
or cool circuit.  
Installing New Thermostat  
1. Pull the thermostat body off the thermostat base. Forcing  
or prying on the thermostat will cause damage to the unit.  
2. Place base over hole in wall and mark mounting hole  
locations on wall using base as a template.  
3. Move base out of the way. Drill mounting holes. If you  
are using existing mounting holes and the holes drilled  
are too large and do not allow you to tighten base snug-  
ly, use plastic screw anchors to secure the base.  
4. Fasten base snugly to wall using mounting holes shown  
in Figure 1 and two mounting screws. Leveling is for  
appearance only and will not affect thermostat operation.  
5. Connect wires to terminal block on base using appropriate  
wiring schematic.  
*Power Stealing Assist is very reliable to increase battery life,  
but on a small number of heating or cooling systems with high  
impedance electronic modules you may observe one of the fol-  
lowing conditions:  
1.The furnace draft inducer motor may run with no call for heat.  
2.The furnace fan may turn on with no call for heat or may not  
turn off.  
3.The furnace may not turn off when the call for heat ends.  
4.The air conditioner may not turn off when the call for cool ends.  
If the Power Stealing Assist method is not compatible with your  
system, place the Power Stealing Switches to "Off".This cancels  
Power Stealing Assist, operates the thermostat on batteries and  
corrects the condition.  
6. Push excess wire into wall and plug hole with a fire re-  
sistant material (such as fiberglass insulation) to prevent  
drafts from affecting thermostat operation.  
Figure 1 – Thermostat Base Multi-Stage 1F95EZ-0671  
7. Carefully line the thermostat up with the base and snap  
into place.  
Battery Location  
2 "AA" alkaline batteries are included in the thermostat at the  
factory with a battery tag to prevent power drainage. Remove  
the battery tag to engage the batteries.  
Mounting  
Hole  
Mounting  
Hole  
To replace batteries, set system to OFF, remove thermostat  
from wall and install the batteries in the rear along the top of  
the thermostat (see Figure 1). For best results, use a premi-  
um brand "AA" alkaline battery such as Duracell® or Ener-  
gizer®. If the home is going to be unoccupied for an extended  
Place Level  
across Mounting Tabs  
(for appearance only)  
Place Level  
across Mounting Tabs  
(for appearance only)  
Rear view of thermostat  
2 "AA" Batteries  
period (over 3 months) and  
is displayed, the batteries  
should be replaced before leaving.  
Power Stealing Switch  
Power Stealing  
Switches  
The Power Stealing Switches (Fig. 1) should be left in the  
"On" position for most systems. The information in the fol-  
lowing table details the thermostat power method and switch  
options.  
*
* A1 For Damper Control Not Applicable To This Model.  
WIRING CONNECTIONS  
Refer to equipment manufacturers' instructions for specific  
system wiring information. After wiring, see CONFIGURA-  
TION section for proper thermostat configuration.  
Wiring diagrams shown are for typical systems and describe  
the thermostat terminal functions.  
TERMINAL DESIGNATION DESCRIPTIONS  
Description  
Terminal Designation  
O/B ...............................Changeover valve for heat pump energized constantly in cooling and off/heating  
Y2 ...............................2nd Stage Compressor  
Y ...............................Compressor Relay  
G ...............................Fan Relay  
RC ...............................Power for Cooling  
RH ...............................Power for Heating  
C ...............................Common wire from secondary side of cooling (Optional). Required for fault indication, continuous back-  
light operation or remote temperature sensor operation 6 Powered closed 3rd wire for 3-wire zone valve  
W/E ................................Heat Relay/Auxiliary Heat Relay (Stage 1) (3rd Stage Heat in HP2)  
W2 ...............................2nd Stage Heat (4th Stage Heat in HP2)  
L ...............................Compressor diagnostic indicator for systems with diagnostic connection typically found on Heat pump  
systems or with Copeland's Comfort Alert  
2
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WIRING DIAGRAMS  
Figure 2 – Single Stage or Multi-Stage System (No Heat Pump)  
with Single Transformer  
Single Stage, Multi-Stage and Heat  
Pump Connections  
Refer to equipment manufacturers' instructions  
for specic system wiring information.  
Jumper  
L
O/B  
W/E  
W2  
G
RH  
C
6
Y
RC  
Y2  
This thermostat is designed to operate a  
System  
single-transformer or two-transformer system.  
O
Energized Constantly  
in  
Blower/  
Single  
Stage 1  
(SS1)  
Diagnostic  
Indicator  
Input  
You can congure the thermostat for use with  
the following systems:  
Circulator  
Fan Energized  
on Call for  
Cool (and  
Heat if  
No Output  
No  
Optional*  
24 Volt  
(Com-  
mon)  
Heat  
24 Volt 24 Volt  
Cool Mode  
Output  
Mode  
Cool Mode  
1st Stage  
(Hot)  
Heat  
(Hot)  
Cool  
or  
1st Stage  
System  
Malfunction  
Switch  
Input  
B
Energized Constantly  
in Heat, Off,  
Emergency  
Mode  
Multi-  
Stage 2  
(MS2)  
Cool  
Mode  
2nd  
Heat Mode  
2nd Stage  
SINGLE STAGE (SS 1) gas, oil or electric.  
MULTI-STAGE (MS 2) gas, oil or electric.  
configured  
for Electric  
Heat)  
Stage  
Comfort Alert II Module  
HEAT PUMP TYPE 1 (HP 1). Single stage  
compressor system; gas or electric backup.  
NEUTRAL  
24VAC  
HOT  
or Similar System  
Diagnostic Module  
120VAC  
See Module Instructions  
for details  
CLASS II  
TRANSFORMER  
HEAT PUMP TYPE 2 (HP 2). Multi-stage  
compressor or two compressor system with  
gas or electric backup.  
* Common connection required for diagnostic or malfunction indication.  
Figure 3 – Single Stage or Multi-Stage System (No Heat Pump)  
with Two Transformers  
After wiring, see INSTALLER CONFIGURA-  
TION section for proper thermostat congura-  
tion.  
Remove Jumper Wire  
Jumper  
between RH & RC  
O/B  
W/E  
G
RH RC  
L
Y
Y2  
W2  
C
System  
O
Energized Constantly  
in  
Blower/  
Single  
Stage 1  
(SS1)  
Circulator  
Fan Energized  
on Call for  
Cool (and  
Heat if  
No Output  
No  
Heat  
24 Volt 24 Volt Optional*  
Diagnostic  
Indicator  
(Optional)  
Cool Mode  
Output  
Cool Mode  
1st Stage  
Mode  
(Hot) (Hot)  
Heat Cool  
24 Volt  
(Com-  
mon)  
1st Stage  
B
Energized Constantly  
in Heat, Off,  
Emergency  
Mode  
Multi-  
Stage 2  
(MS2)  
Cool  
Mode  
2nd  
Heat Mode  
2nd Stage  
configured  
for Electric  
Heat)  
Stage  
NEUTRAL  
24VAC  
HOT  
120VAC  
NEUTRAL  
120VAC  
HEATING  
24VAC  
HOT  
COOLING  
CLASS II  
TRANSFORMER  
CLASS II  
TRANSFORMER  
* Common connection required for diagnostic or malfunction indication.  
Figure 4 – Heat Pump Systems  
Jumper  
+W/E  
+W2  
G
RH RC  
C
6
L
O/B  
Y
Y2  
System  
Heat Mode - 2nd  
Heat Mode - 3rd  
Stage, Emergency Stage, Emergency  
Mode - 1st Stage Mode - 2nd Stage  
O
Blower/  
+Note: Dual Fuel option  
de-energizes Heat mode  
stage 1 (compressor)  
when auxiliary heat  
is energized  
+Note: Dual Fuel option  
de-energizes Heat mode  
stage 1 (compressor)  
when auxiliary heat  
is energized  
Heat Pump 1  
(HP1)  
Energized in  
Cool Mode  
No  
Circulator Fan  
Energized on  
Call for Heat  
or Cool.  
Optional*  
24 Volt  
(Com-  
mon)  
Output  
Diagnostic  
Indicator  
or System  
Malfunction  
Switch  
Heat and  
24 Volt 24 Volt  
Cool Mode  
1st Stage  
(Hot)  
Heat  
(Hot)  
Cool  
B
Heat Mode - 3rd  
Heat Mode-4th  
Set Elect/Gas  
Option for  
Emergency  
mode  
2nd  
Energized in  
Heat, Off,  
Emergency  
Mode  
Heat Pump 2  
(HP2)  
(Compressor)  
Stage, Emergency Stage. Emergency  
Mode - 1st Stage Mode - 2nd Stage  
Stage  
(Com-  
pressor)  
+Note: Dual Fuel option +Note: Dual Fuel option  
de-energizes Heat mode de-energizes Heat mode  
stage 1 (compressor)  
when auxiliary heat  
is energized  
stage 1 (compressor)  
when auxiliary heat  
is energized  
Comfort Alert II Module  
or Similar System  
NEUTRAL  
24VAC  
HOT  
Diagnostic Module  
120VAC  
See Module Instructions  
for details  
CLASS II  
* Common connection required for diagnostic or malfunction indication.  
+ Dual Fuel option, if selected turns off compressor(s) when Auxiliary stages energize.  
Figure 5 – 3-Wire (SPDT) Heat Only Zone Valve Wiring  
Jumper  
6
W
G
RH  
C
Y
RC  
System  
Single Stage  
3-wire  
Zone Valve  
application  
Constant  
24 Volt  
(Com-  
mon)  
24 Volt  
(Hot)  
Cool  
Closes  
Valve  
(6)  
Opens  
Valve  
(4)  
Blower/Circulator  
Fan Energized  
24 Volt  
(Hot)  
Heat  
(5)  
NEUTRAL  
24VAC  
HOT  
120VAC  
CLASS II  
TRANSFORMER  
3
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THERMOSTAT QUICK REFERENCE  
Home Screen Description  
Figure 6 – Home Screen Display  
Room  
Setting  
Temperature  
Temperature  
Battery Level Indicator  
Indicating the current power level  
of the 2 “AA” batteries.  
Full power remaining.  
Half power remaining.  
Change  
The batteries should  
be replaced at this time with 2 new  
premium brand “AA” Alkaline batteries.  
(See page 2 for more details).  
System  
Indicators  
Fan  
Indicator  
Figure 7 – Programming & Configuration Items  
13  
12 11 10  
14  
15  
9
8
7
6
16  
17  
1
2
5
4
3
Programming and Configuration Items  
10  
"Setting" indicates the setpoint temperature.  
“Heat" “A/C” “Off” identies button. When lled indi-  
1
cates system mode selected.  
11  
"Hold Temp" indicates temporary hold or "Hold" indi-  
cates hold mode.  
"Aux" inidicates thermostat congured for Heat Pump.  
When lled indicates Auxiliary stage is operating.  
2
12  
"Morn" "Day" "Eve" "Night" indicates period being  
3
4
5
6
7
programmed or current program in Run mode.  
"Adv Day" identies button when in schedule mode.  
"Time" identies button when in schedule mode.  
"Fan" identies button. When lled indicates Fan is on.  
"Run" identies button to begin normal operation.  
13  
14  
15  
"A" "P" indicates time as Morning (A) or Evening (P).  
"Mon - Sun" indicates day of week.  
"Month" "Year" "Date" indicates the Month Year or  
Date when setting time.  
"Sched" identies button to be used during program-  
ming or "Run Sched" identies button to return to  
normal operation.  
16  
17  
"Call For Service" indicates a diagnostic fault in the  
heating/cooling system. It does not inidicate a fault in the  
thermostat.  
8
9
"Hold" "Copy" "Menu" identies button.  
"Change" indicates when batteries are low and should  
be replaced.  
"Limit" indicates temperature is adjusted to the limit set  
in the conguration menu.  
4
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INSTALLER/CONFIGURATION MENU  
With Heat or A/C selected, press and hold the Menu button for at least 5 seconds. The display will show item #1 in the table  
below. Press Menu to advance to the next menu item. Press  
or  
to change a menu item options.  
INSTALLER/CONFIGURATION MENU  
Menu HP SS Press  
Displayed  
(Factory Default)  
Comments  
Press  
select from listed op-  
tions  
or  
to  
Ref.  
Button  
1
1
1
MENU  
(MS 2)  
HP 1, HP 2, SS 1  
Selects Multi-Stage (MS 2 No Heat Pump),  
Heat Pump 1 (HP 1, 1 compressor),  
Heat Pump 2 (HP 2, 2 compressor or 2 speed  
compressor), or Single Stage (SS 1)  
2
3
2
3
2
3
MENU (GAS) for SS or MS  
ELE  
OFF  
GAS setting: furnace controls the blower  
ELE setting: thermostat controls the blower  
MENU  
MENU  
MENU  
MENU  
E (On)  
Selects Energy Management Recovery (EMR)  
On or OFF. (Not available in -non-program-  
mable mode)  
4
5
6
4
5
4
5
CR Heat (ME)  
SL, FA  
SL, FA  
Selects Adjustable Anticipation, cycle rate, Heat  
(This item only appears when MS 2 or SS 1 is  
selected above)  
CR Heat A/C  
(ME)  
Selects Adjustable Compressor Anticipation  
(Heat Pump) This item only appears when  
HP 1, HP 2 is selected above  
CR A/C (ME)  
or  
SL, FA  
SL  
Selects Adjustable Anticipation, cycle rate, cool  
(when MS 2 or SS 1 is selected above.) or  
Selects the cycle rate for Auxiliary stage (when  
HP 1 or HP 2 is selected above)  
CR Aux Heat (FA)  
7
8
6
7
6
7
MENU  
MENU  
CL (OFF)  
CL On  
Compressor Lockout Time  
Heat A/C Off  
or  
Heat A/C Off,  
Heat Off with Fan icon,  
System Mode Configuration  
with Automatic Changeover capability  
Aux Heat A/C Off Heat Off without Fan icon  
A/C Off  
9
8
9
8
9
MENU  
MENU  
CO (OFF)  
dL (On)  
0 HI  
CO On  
dL OFF  
Selects Compressor Optimization  
Selects Display Light On or OFF  
10  
11  
10 10 MENU  
1 HI, 2 HI, 3HI, 4 HI,  
Adjustable Ambient Temperature Display  
(current temperature) 1 LO, 2 LO, 3 LO, 4 LO  
12  
13  
11 11 MENU  
12 12 MENU  
°F  
°C  
7
Selects Fahrenheit/Celsius Temperature Display  
P (0)  
Defaults to P (0) non-programmable  
P (7) is 7-day programming  
14  
13 13 MENU  
PS (2)  
4
Selects Program periods per day:  
4 = Morn, Day, Eve, Night  
2 = Day, Night  
15  
16  
14  
MENU  
Heat FA (On)  
A/C FA (On)  
dS (On)  
OFF  
OFF  
Fast Heat option may be disabled by  
selecting OFF. NA to SS or HP1 config.  
15 14 MENU  
Fast Cool option may be disabled by  
selecting OFF. NA to SS or HP1 config.  
17  
18  
16 15 MENU  
17 16 MENU  
Off  
Selects Automatic Daylight Saving Time option  
HL Heat  
(99)  
62 to 98  
Select's Limited HEAT Range  
19  
20  
18 17 MENU  
LL A/C  
(45)  
46 to 82  
1 to 9  
Select's Limited A/C Range  
19  
MENU  
MENU  
dF (0)  
Selects dF (dual Fuel) setting. 0 is Off  
(If dual Fuel option is required, a selection of 5  
is recommended)  
Cd  
(60)  
0 to 99  
Selects compressor delay in seconds when dF  
is greater than 0  
21  
20 18 MENU  
A/C On (o)  
Heat On (b)  
Selects operation of the reversing valve terminal  
(O/B) output as an O or B terminal  
5
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INSTALLER/CONFIGURATION MENU  
1) This control can be configured for:  
terminal is not powered, the light will be on momen- tarily  
after any button is pressed no matter whether the backlight  
is selected ON or OFF.  
MS 2 – Multi-Stage System (no heat pump)  
HP 1 – Heat Pump with one stage of compressor  
HP 2 – Heat Pump with two stage compressor or two  
compressor system, Gas or Electric backup  
SS 1 – Single Stage System  
11)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 dis-  
play temperature to match your previous thermostat. The  
current or adjusted room temperature will be displayed.  
2) GAS or Electric (ELE) fan operation. If the heating system  
requires the thermostat to energize the fan, select ELE.  
Select GAS if the heating system energizes the fan on a  
call for heat.  
12)Select F° or C° Readout – Changes the display readout  
to Celsius or Fahrenheit as required.  
3) Energy Management Recovery: (this step is skipped if  
configured to be non-programmable).  
13)Program Options: Selects configuration for 7 day (7) or  
non-programming (0) mode. The default setting is 0, indi-  
cating non-programming. The programs per week can be  
Energy Management Recovery (E) On enables the ther-  
mostat 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.  
changed by pressing the  
or  
buttons. A selection  
of 0 days for non-programmable will eliminate the need for  
EMR, and that step in the menu will be skipped.  
14)Program Steps per day – This control can be configured  
for 4 or 2 program steps per day. Default is "PS" and can  
be toggled between 4 PS and 2 PS.  
Example: E On is selected and your heating is pro-  
grammed to 65° at night and 70° at 7 AM. If the building  
temperature is 65°, the difference between 65° and 70° is  
5°. Allowing 5 minutes per degree, the thermostat setpoint  
will change to 70° at 6:35 AM. Cooling allows more time  
per degree, because it takes longer to reach set tempera-  
ture.  
15 & 16) Select Fast Second Stage ON or OFF – Heat  
pump or Multi-stage only, in the run mode, with the fast  
Heat feature enabled (FA Heat On), if the Heat setpoint  
temperature is manually raised by 3°F (2°C) or more  
above the actual temperature using  
the second stage  
4, 5 & 6) Cycle Rate Selection – The factory default setting for  
Heat and Cool modes, SS1, MS2, is medium cycle (ME).For  
Heat Pump, HP1, HP2, the default setting is medium (ME).  
For Aux the default setting is fast cycle (FA).To change cycle  
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. The  
Fast Cool feature (FA Cool) provides the same controls  
when the setpoint temperature is lowered.  
rate, press the  
or  
button.  
Cycle rate differentials for different settings are:  
17)Select Daylight Saving Time Calculation – This feature  
will allow the thermostat to calculate the DST automati-  
cally and apply it to the Real Time Clock display. Default  
MODE  
Fast  
FA  
Medium Slow  
ME  
SL  
On. Use  
or  
touch keys to select the feature OFF.  
Heat (SS1, MS2)  
Cool (SS1, MS2)  
Heat Pump (HP1, HP2) 0.9°F  
AUX (HP1, HP2) 0.6°F  
0.4°F  
0.9°F  
0.6°F  
1.2°F  
1.2°F  
-
1.7°F  
1.7°F  
1.7°F  
1.7°F  
18)Limited Heat Range – This feature provides a maximum  
setpoint temperature for heat. The default setting is 99°F. It  
can be changed between 62°F and 98°F by pressing the  
or  
button.  
19)Limited Cool Range – This feature provide 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  
7) Select Compressor Lockout CL OFF or ON – Selecting  
CL ON will cause the thermostat to wait 5 minutes be-  
tween cooling cycles. This is intended to help protect the  
compressor from short cycling. Some newer compressors  
already have a time delay built in and do not require this  
feature.Your compressor manufacturer can tell you if the  
lockout feature is already present in their system. When  
the thermostat compressor time delay occurs, it will flash  
the setpoint for up to five minutes.  
or  
button.  
20)Select Dual Fuel (dF) – Selects dual fuel setting 0 to 9  
(0 is default OFF, for Elect AUX) if your system has a fos-  
sil fuel (gas or oil) Auxiliary heat. HP1 or HP2 only.  
Select Compressor Delay (Cd) – After the auxiliary heat  
is turned on, the compressor(s) shut down is delayed for  
the time selected (in seconds). This delay is factory set  
8) System Mode Configuration – This thermostat is config-  
ured for Heat and Cool (SYSTEM switch with Cool Off  
Heat) default. It can also be configured for Heat and Cool  
(Heat, Cool, Off), Heat only with fan (Off Heat), Heat only  
without fan, and Cool only (Cool Off).  
to 60, but can be set in the range of 0 to 99 using  
or  
buttons. Available only if dF 1 to 9 is selected above.  
21)Select Reversing Valve Output – The O/B option is  
factory set at "O" position. This will accommodate the  
majority of heat pump applications, which require the  
changeover relay to be energized in COOL. If the thermo-  
stat 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 option should be  
set at "B" position.  
9) Compressor Optimization – CO provides a delay in cir-  
culator fan operation after the compressor turns on or off.  
With CO selected ON, when the compressor turns on (for  
a call for heat in heat pump or a call for cool) the fan will  
be delayed for five seconds before turning on to allow the  
air to be heated or cooled. After the compressor turns off  
for call for cool, the fan will continue to run for 20 seconds  
to circulate all of the cooled air. If CO is set to OFF, there  
will be no delay in fan operation.  
10)Select Backlight Display – The display backlight improves  
display contrast in low lighting conditions. When the "C"  
terminal is powered, selecting backlight dL ON will keep the  
light on continuously. Select backlight OFF will turn the light  
on momentarily after any button is pressed. When the "C"  
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OPERATINGYOUR THERMOSTAT  
Check Thermostat Operation  
CAUTION  
!
To prevent compressor and/or property damage, if the  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
NOTE  
To prevent static discharge problems, touch side of  
thermostat to release static build-up before touching  
any keys.  
Cooling System  
1. Press A/C button to select A/C.  
If at any time during testing your system does not operate  
properly, contact a qualified service person.  
2. Press  
to adjust thermostat setting below room tem-  
perature. The blower should come on immediately on high  
speed, followed by cold air circulation. The display should  
show “A/C”. If the setpoint temperature display is flashing,  
the compressor lockout feature is operating (see Configu-  
ration menu, item 7).  
Fan Operation  
If your system does not have a G terminal connection, skip to  
Heating System.  
1. Turn on power to system.  
3. Adjust temperature setting to 3° below room temperature.  
The second stage cooling should begin to operate. A click  
from the thermostat will be heard to confirm second stage.  
2. Press FAN button. The display will show "Fan" and the  
blower should begin to operate.  
3. Press FAN button again. The display will show "Fan" out-  
lined and the blower should stop immediately.  
4. Press  
to adjust the temperature setting above room  
temperature. The cooling system should stop operating.  
CAUTION  
!
Do not allow the compressor to run unless the  
compressor oil heaters have been operational for 6  
hours and the system has not been operational for  
at least 5 minutes.  
Dual Fuel Temperature Setpoint and  
Compressor Delay  
When the thermostat is configured for Heat Pump mode and  
the Dual Fuel feature is selected, the thermostat can use  
software logic to determine when to switch to gas heat and  
shut down the compressor. This eliminates the need for a  
fossil fuel kit.  
Heating System  
1. Press the HEAT button to select HEAT. If the auxiliary  
heating system has a standing pilot, be sure to light it.  
The user selectable temperature is called the dual fuel tem-  
perature setpoint (dF) and is set in the Installer/Configuration  
menu, item 20. A software logic based dual fuel number from  
1 to 9 can be selected. A selection of 5 is recommended. A  
higher number will provide a larger stage separation. A lower  
number will provide a smaller separation.  
2. Press  
to adjust thermostat setting to 1° above room  
temperature. The heat pump system should begin to  
operate. The display should show “Heat”. However, if the  
system configuration is set to HP1 or HP2 and setpoint  
temperature display is flashing, the 5 minute compressor  
lockout feature is operating (see Configuration menu,  
item 7).  
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 will show "Aux" and "Heat".  
After the dual fuel temperature setting is selected, press  
Menu. A compressor delay (Cd) can be set for compressor  
shutdown after the auxiliary stage is energized. This delay  
will minimize the time the system may blow cooler air until the  
alternate source of heat comes on. Default setting for delay is  
60 seconds. This delay can be set from 0 to 99 seconds using  
4. Press  
to adjust the thermostat below room tempera-  
ture. The heating system should stop operating.  
the  
or  
buttons.  
Auxiliary (Emergency) System  
AUX bypasses the Heat Pump to use the heat source wired  
to terminal W/E on the thermostat. AUX is typically used  
when compressor operation is not desired, or you prefer  
back-up heat only.  
Compressor Delay (Cd) will not be available if dF is selected  
0 (off).  
1. Press and hold HEAT button for at least 5 seconds to  
select "AUX".  
2. Press  
to adjust thermostat setting above room tem-  
perature. The Auxiliary heating system will begin to oper-  
ate. The display will show “AUX” and “HEAT”.  
3. Press  
to adjust the thermostat below room tempera-  
ture. The Auxiliary heating system should stop operating.  
4. To return to Heat Pump mode press “HEAT” button. "Aux"  
will dsplay.  
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TROUBLESHOOTING  
Reset Operation  
Note: When thermostat is reset, installer configuration menu settings and programming will reset to factory settings.  
If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermo-  
stat by removing the wires from terminals RH and RC (do not short them together) and removing batteries for 2 minutes. After  
resetting the thermostat, replace the wires and batteries. If the thermostat has been reset and still does not function correctly  
contact your heating/cooling service person or place of purchase.  
Note: Be sure to review the installer configuration menu settings.  
To reset the programming, clock and configuration settings, press the  
and FAN button simultaneously. The thermostat  
should go blank and then all segments will be displayed momentarily.  
Symptom  
Possible Cause  
Corrective Action  
No Heat/No Cool/No Fan  
(common problems)  
1. Blown fuse or tripped circuit breaker.  
2. Furnace power switch to OFF.  
Replace fuse or reset breaker.  
Turn switch to ON.  
3. Furnace blower compartment door or  
panel loose or not properly installed.  
4. Loose connection to thermostat or system.  
Replace door panel in proper position to engage safety  
interlock or door switch.  
Tighten connections.  
No Heat  
1. Pilot light not lit.  
Re-light pilot.  
2. Furnace Lock-Out Condition. Heat  
may also be intermittent.  
Many furnaces have safety devices that shut down when  
a lock-out condition occurs. If the heat works intermittently  
contact the furnace manufacturer or local HVAC service  
person for assistance.  
3. Heating system requires service or  
thermostat requires replacement.  
Diagnostic: Set System to HEAT and 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 HVAC service  
person to verify the heating is operating correctly.  
No Cool  
1. Cooling system requires service or  
thermostat requires replacement.  
Same 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.  
Heat, Cool or Fan  
Runs Constantly  
1. Possible short in wiring.  
Check each wire connection to verify they are not shorted  
or touching together. No bare wire should stick out from  
under terminal block. Try resetting the thermostat as de-  
scribed above. If the condition persists the manufacturer  
of your system or service person can instruct you on how  
to test the Heat/Cool system for correct operation. If the  
system operates correctly, replace the thermostat.  
2. Possible short in thermostat.  
3. Possible short in heat/cool/fan system.  
4. FAN Switch set to Fan ON.  
Thermostat Setting &  
Thermostat Thermometer  
Disagree  
1. Thermostat thermometer setting  
requires adjustment.  
The thermometer can be adjusted +/- 4 degrees. See  
Temperature Display Adjustment in the Configuration  
Menu section.  
Furnace (Air Conditioner)  
Cycles Too Fast or Too Slow  
(narrow or wide  
1. The location of the thermostat and/or  
the size of the Heating System may  
be influencing the cycle rate.  
Digital thermostats provide precise control and cycle  
faster than older mechanical models. The system turns  
on and off more frequently but runs for a shorter time  
so there is no increase in energy use. If you would like  
an increased cycle time, choose SL for slow cycle in the  
Configuration menu reference, steps 4 through 6. If an ac-  
ceptable cycle rate is not achieved, contact a local HVAC  
service person for additional suggestions.  
temperature swing)  
Forgot Keypad  
Lockout Code  
Press the menu button (button will disappear) and hold in  
for 20 seconds. This unlocks the thermostat.  
HOMEOWNER HELP LINE: 1-800-284-2925  
White-Rodgers is a division  
of Emerson Electric Co.  
The Emerson logo is a  
trademark and service mark  
of Emerson Electric Co.