White Rodgers 1F98EZ 1441 Thermostat User Manual

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1F98EZ-1421, -1441 Easy Install  
For up to 4 Stages Heat and 2 Stages Cool  
INSTALLATION INSTRUCTIONS  
FAILURETO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE  
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL  
INJURY AND/OR PROPERTY DAMAGE.  
APPLICATIONS  
1F98EZ-1421, -1441 System  
Configuration Applications  
Options  
Maximum  
Stages  
Single Stage  
Multi Stage  
Heat Pump  
Gas, Oil, Electric, Heat Only, Cool  
Only or Heat Cool Systems  
1/1  
2/2  
4/2  
Gas, Oil, Electric, Heat Only, Cool  
Only or Heat Cool Systems  
Single or Two Compressor Systems  
with up to 2 Stages of Aux / Em Heat  
Heat Pump  
with Dual Fuel  
Single or Two Compressor Systems  
with up to 2 Stages of Fossil fuel  
Heat  
4/2  
12” Touchscreen User Interface  
1F98-1491  
Equipment Control  
40C01-1400  
SPECIFICATIONS  
Electrical Rating:  
Input-Hardwire................................................... 20 to 30 VAC  
Terminal Load........................................................... 1.0A per terminal, 2.5A maximum all terminals combined  
Setpoint Range......................................................... 45° to 99°F (7° to 37°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 1.5°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 Interface................................................ 4-1/2”H x 6”W x 1-1/4”D  
Dimensions Control .................................................. 5-1/2”H x 5-3/4”W x 1-1/2”D  
CAUTION  
Topreventelectricalshockand/orequipmentdamage,  
ATTENTION: MERCURY NOTICE  
This product does not contain mercury. However, this  
product may replace a product that contains mercury.  
!
disconnect electric power to system at main fuse or  
circuit breaker box until installation is complete.  
Mercury and products containing mercury must not be  
discarded in household trash. Do not touch any spilled  
mercury. Wearing non-absorbent gloves, clean up any  
spilled mercury and place in a sealed container. For proper  
disposal of a product containing mercury or a sealed  
container of spilled mercury, place it in a suitable shipping  
container. Refer to www.white-rodgers.com for location to  
send product containing mercury.  
Index  
Page  
Installation  
2
2
3
5
8
Wiring Connections  
Wiring Diagrams  
Installer Configuration Menu  
Troubleshooting  
PART NO. 37-7215C  
Replaces 37-7215B  
1110  
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INSTALLATION  
Thermostat / Interface 1F98-1491  
1) Pull the thermostat/interface off the 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.  
WARNING  
Thermostat installation and all components of the  
control system shall conform to Class II circuits per  
the NEC code.  
!
3) Move base out of the way. Drill mounting holes. If you are  
using existing mounting holes and the holes drilled are  
too large and do not allow you to tighten base snugly, use  
plastic screw anchors to secure the base.  
4) Fasten base snugly to wall using mounting holes and two  
mounting screws. Leveling is for appearance only and will  
not affect thermostat operation.  
Control 40C01-1400  
Control can be mounted on wall or equipment. Control has  
four mounting holes. Wall anchors and screws are provided  
for mounting on drywall. Drill 3/16 hole for drywall mounting.  
If mounting on equipment Do Not Mount inside HVAC  
equipment. Only mount on outside of HVAC equipment.  
5) Connect wires to terminal block on base (see Figure 1).  
6) Push excess wire into wall and plug hole with a fire  
resistant material (such as fiberglass insulation) to prevent  
drafts from affecting thermostat operation.  
7) Carefully line the thermostat up with the base and snap  
into place.  
WIRING CONNECTIONS  
Refer to equipment manufacturers’ instructions for specific  
system wiring information. After wiring, see CONFIGURATION  
section for proper thermostat configuration.  
control will display E (for communication error) until interface  
is connected. With power supplied to control, it is normal for  
the green system LED to flash periodically.  
Connect wires as appropriate for HVAC systems (see wiring  
diagrams). To power control, connect the 24 V system hot to  
R terminal and common to C on left side of control labelled  
“Power”. On initial power up the 7 segment LED on the  
With interface connected, the 7 segment LED will display  
C to indicate the two devices have initiated communication.  
C will disappear after approximately 30 seconds when  
communication is established.  
BLUE EASY INSTALL INPUTS/OUTPUTS  
Easy Install 40C01  
Control Terminals  
Operational / Functional  
Easy Install 40C01  
Control Terminals  
Operational / Functional  
R ......................................... 24 VAC Transformer  
DHM .................................... Dehumidification Relay / Connection  
DHM2 .................................. Dehumidification Relay / Connection  
HM....................................... Humidification Relay / Connection  
HM2..................................... Humidification Relay / Connection  
R.......................................... 24 VAC to Interface  
1........................................... Data to/from Interface  
2........................................... Data to/from Interface  
C.......................................... 24 VAC Common to Interface  
RC....................................... 24 VAC Cooling Transformer  
RH....................................... 24 VAC Heating Transformer  
C ......................................... 24 V Transformer Common  
W/E ..................................... Heating Stage 1  
HP Aux/Em Heat Stage 1  
W2....................................... Heating Stage 2  
HP Aux/Em Heat Stage 2  
Y.......................................... Compressor Stage 1  
Y2........................................ Compressor Stage 2  
G.......................................... Fan Relay  
L Terminal............................ System Monitor Compatible  
with Comfort Alert Diagnostics  
RJ11 .................................... Field configuration hook-up with RJ11  
equipped configuration tool  
+ .......................................... Voltage to Outdoor Sensor  
S .......................................... Outdoor Sensor Temperature Signal  
- ........................................... Voltage to Outdoor Sensor  
O/B Terminal........................ Changeover Relay Heat Pump  
Fig. 1 - Thermostat / Interface to control wiring  
R
R
1
1
2
2
C
C
1F98 Thermostat  
40C01Control  
2
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WIRING DIAGRAMS  
Fig. 2 - Typical Connection of a Single Stage or Multi-Stage System  
*
RH  
SYSTEM  
R
RC  
C
W/E  
W2  
Y
Y2  
G
O/B  
L
Single  
Stage  
24 VAC  
Power  
24 VAC  
Power  
for Heating for Cooling  
24 VAC  
Power  
Heat  
N/A  
Cool  
N/A  
Fan  
N/A System  
Monitor  
24 VAC  
Common  
Required  
Multi  
Stage  
24 VAC  
Power  
24 VAC  
Power  
24 VAC  
Power  
Heat  
Heat  
Cool  
mode  
1st  
Cool  
mode  
2nd  
mode mode  
1st 2nd  
stage stage  
stage  
stage  
NEUTRAL  
120 VAC  
24 VAC  
HOT  
*Factory installed jumper between RH and RC  
CLASS II  
Transformer  
Fig. 3 - Typical Connection of Heat Pump System up to 4 Stages Heat / 2 Stages Cool  
*
SYSTEM  
R
RH  
RC  
C
W/E W2  
Y
Y2  
G
O/B  
L
Heat  
Pump  
24 VAC 24 VAC 24 VAC 24 VAC  
Power Power Power Common  
Aux / Aux /  
1st stage  
2nd stage  
Fan Changeover System  
Valve Monitor  
Em  
Em Compressor Compressor  
2nd  
1st  
for  
for  
Required  
Heating Cooling  
stage stage  
NEUTRAL  
120 VAC  
24 VAC  
HOT  
*Factory installed jumper between RH and RC  
CLASS II  
Transformer  
Fig. 4 - Typical Connection of Heat Pump / Dual Fuel System up to 4 Stages Heat / 2 Stages Cool  
*
SYSTEM  
R
RH  
RC  
C
W/E W2  
Y
Y2  
G
O/B  
L
Heat  
Pump  
24 VAC 24 VAC 24 VAC 24 VAC  
Power Power Power Common  
Fossil Fossil 1st stage  
Fuel Fuel Compressor Compressor  
1st 2nd  
stage stage  
2nd stage  
Fan Changeover System  
Valve Monitor  
for  
for  
Required  
Heating Cooling  
NEUTRAL  
120 VAC  
24 VAC  
HOT  
*Factory installed jumper between RH and RC  
CLASS II  
Transformer  
3
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WIRING DIAGRAMS  
Wiring Guide for Equipment Accessories  
Fig. 5 - Non-Powered Humidifier. HM terminal provides system 24 V on call for humidification  
HM DRY  
HM  
R
C
Non-Powered  
Humidifier  
RH  
HM2  
HM2  
Transformer  
Fig. 6 - Powered Humidifier. With HM DRY switch in HM2 position, HM and HM2 provide normally  
open dry contact for low voltage (24 V) powered humidifier connection.  
HM  
HM DRY  
Powered  
Humidifier  
RH  
HM2  
HM2  
Fig. 7 - Powered Dehumidifier. With DHM DRY switch in DHM2 position, DHM and DHM2 provide  
normally open dry contact for low voltage (24 V) whole house powered dehumidifier connection.  
DHM  
Powered  
RH  
DHM2  
Dehumidifier  
DHM DRY  
DHM2  
Fig. 8 - System Dehumidification with variable speed blower. For systems where low speed requires connect to normally  
open 24 V powered DHM terminal for low speed connection on air handler / furnace (24 V removed on dehumidification call).  
DHM  
Low Speed  
RH  
DHM2  
Fan  
DHM2  
DHM DRY  
Fig. 9 - System Dehumidification with variable speed blower. For systems where low speed requires system 24 V on  
dehumidification connect 24 V to DHM2 with DHM DRY switch in DHM2 position and connect DHM to low speed  
connection on air handler/ furnace.  
R
DHM  
RH  
DHM2  
Low Speed  
Fan  
C
DHM DRY  
DHM2  
Transformer  
4
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INSTALLER/CONFIGURATION MENU  
Entering and Navigating the Advanced Installer Configuration Menu  
On the Home Screen Display, touch the Menu key to display additional key choices. Touch and hold the Installer Config key  
for approximately 3 seconds to enter the Thermostat Options Configuration Menu. Touch and hold the Installer Config key  
again for approximately 3 seconds to enter the Advanced Installer Configuration Menu.  
Displayed in  
Press  
or  
Key  
to Select Options  
Message Area  
Description of  
Features in order when  
Displayed in  
Clock Digits  
(Default)  
Ref.  
#
using  
(Use  
to choose;  
to step back)  
Options  
Outdoor / Condenser  
Configuration  
CONDENSER  
CONFIG  
1
2
AC1  
GA2  
AC0, AC1, AC2, HP1, HP2  
FAN, GA1, GA2, EL1, EL2  
Indoor Heat  
Configuration  
INDOOR HEAT  
CONFIG  
B or O terminal  
(HP1, HP2 only)  
3
4
5
O
O, b  
REVERSING VALVE  
HEAT CYCLE RATE  
COOL CYCLE RATE  
Heat Cycle Rate  
Cool Cycle Rate  
FA  
FA  
SL, FA  
SL, FA  
Auxiliary Cycle Rate  
(HP1, HP2 only)  
AUXILIARY CYCLE  
RATE  
6
7
FA  
On  
SL, FA  
OFF, On  
OFF, On  
Energy Management  
Recovery  
ENERGY MANAGEMENT  
RECOVERY  
Outdoor Remote  
Sensor  
8
OFF  
OFF  
40  
OUTDOOR REMOTE SENSOR  
AUXILIARY OFF  
Auxiliary Off  
(HP1, HP2 only)  
OFF, 35-80 (in steps of 1 degree)  
From OFF, value changes to 80  
9
Dual Fuel Config  
(HP1, HP2 only)  
OFF, 0 to 50 (in steps of 1 degree)  
From OFF, value changes to 40  
10  
DUAL FUEL CONFIG  
OFF, 40-80 (in 1% steps) - displayed  
in the last digits of the Message Area.  
From OFF, value changes to 60  
DEHUM XX% (where XX  
is the DEHUM set point)  
11  
12  
Dehumidification  
OFF  
OFF  
Independent  
Dehumidification  
OFF, On  
INDEPENDENT DEHUMID  
OFF, 20-60 (in 1% steps) - displayed  
in the last digits of the Message Area.  
From OFF, value changes to 40  
HUMID XX% (where XX  
is the HUM set point)  
13  
Humidification  
OFF  
Independent  
Humidification  
INDEPENDENT  
HUMID  
14  
15  
OFF  
OFF, On  
OFF, On  
Compressor Lockout  
OFF  
COMPRESSOR LOCKOUT  
5
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INSTALLER/CONFIGURATION MENU  
Configuration  
Control can be configured at the equipment by utilizing the configuration plug in tool (F4-1400). The tool mounts to the back  
of the interface and plugs into the bottom of the control via the RJ-11 connection. (Note:You cannot have two interfaces  
connected to the control at the same time). With control powered, interface is used to configure the application and for  
operational checks. Once configured, the interface can be installed in living area.  
1) Outdoor / Condenser Configuration. Select the num-  
ber type A/C (air conditioner) HP Heat Pump and number  
of stages. The appropriate Color (A/C= Amber, Heat  
Pump=Green) LED will illuminate for the configured Y/Y2  
terminals.  
9) Auxiliary Off. When condenser is heat pump configured  
and outdoor sensor is connected, the option of locking  
out the auxiliary heat based on outdoor ambient tem-  
perature becomes available. Default is Off with a selec-  
tion range from 80 degrees to 35 degrees in 1 degree  
increment. When outdoor ambient is above the selected  
temperature the auxiliary stages are disabled.  
2) Indoor / Heat Configuration. Select the number type  
GA (Gas) EL (electric) and Fan and number of stages.  
The appropriate Color (Amber if gas, Green if electric)  
LED will illuminate for the configured W/W2 terminals.  
10) Dual Fuel Config. When condenser is heat pump and  
indoor heat is gas and outdoor sensor is connected. A  
selection from 0 to 50 in one degree increment is avail-  
able. The Auxiliary/fossil fuel system is enabled, the heat  
pump is disabled when the outdoor ambient temperature  
is at or below the selection.  
3) B or O Terminal Configuration. If condenser is heat  
pump configured then Select either O (default) or B  
terminal output configuration. The B/O LED will illuminate  
the appropriate color (Amber if B, Green if O)  
11) Dehumidification. Select from Off (default) to a setting  
range from 40% to 80% Rh. If Rh is above setting, a  
cooling call is initiated. To turn this feature Off raise set-  
ting to its highest level 80%  
4) Heat Cycle Rate. Select either FA fast (default) or SL  
slow cycle rate. If longer cycles are desired then set to  
SL.  
5) Cool Cycle Rate. Select either FA fast (default) or SL  
slow cycle rate. If longer cycles are desired then set to  
SL.  
12) Independent Dehumidification. Selection of Off (de-  
fault) or On. When On is selected the DHM2 output is  
active when humidity level is above the desired dehu-  
midification setting.  
6) Auxiliary Cycle Rate. If condenser is heat pump select  
either FA fast (default) or SL slow cycle rate. If longer  
cycles are desired then set to SL.  
13) Humidification. Select from Off (default) to a setting  
range from 20% to 60% Rh. If Rh is below setting HM2  
output is active with a call for heat. To turn this feature Off  
lower setting to its lowest level 20%.  
7) Energy Management Recovery. Select either On or Off.  
With a selection of On the system will start temperature  
setback recovery early to reach the program setpoint at  
the program start time. A selection of Off will start the  
recovery period at the program start time.  
14) Independent Humidification. Selection of Off (default)  
or On. When On is selected the HM2 output operates  
when humidity level is below the desired humidification  
setting.  
8) Outdoor Remote Sense. A selection of On enables the  
display of outdoor temperature with the connection of  
F145-1378 outdoor remote sensor to the control.  
15) Compressor Lockout. Selection of Off (default) or On.  
When On is selected the control will invoke a 5 minute  
delay between compressor cycles.  
view LEDs. To view LEDs with cover installed, break off tab  
on inside of cover.  
After Advanced Installer Configuration, LEDs on the control  
will indicate the selections of the thermostat. The following  
tables show the LED indications. Remove control cover to  
Fig. 10 - LED locations  
Fig. 11 - Inside of front cover  
Break tab  
W/E  
W2  
to have LEDs  
on with cover  
installed  
Y
7-Segment  
LED for Comfort  
Alert and  
Communication  
Codes  
Y2  
G
O/B  
HM  
System  
DHM  
RJ-11 Connection for  
Configuration Plug-In tool  
6
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INSTALLER/CONFIGURATION MENU  
LED Indicator legend:  
= Amber  
= Green  
Off  
= Off  
LED’s will be on constant to show configuration.  
LED’s will flash to indicate the terminal output is active.  
Table 1 - System Configuration  
No. of Stages –  
No. of Stages –  
Indoor  
Equipment  
Type  
Outdoor  
Equipment  
Type  
Outdoor  
Equipment  
Type  
Indoor  
Equipment  
Type  
System  
Type  
Y
Y2  
W/E  
W2  
G
AC  
AC  
AC  
AC  
HP  
HP  
HP  
HP  
HP  
HP  
HP  
HP  
AC  
AC  
1
1
2
2
1
1
2
2
1
1
2
2
1
2
Gas  
Gas  
Gas  
Gas  
Elec  
Elec  
Elec  
Elec  
Gas  
Gas  
Gas  
Gas  
Elec  
Elec  
1
2
1
2
1
2
1
2
1
2
1
2
0
0
Off  
Off  
Off  
Off  
Off  
Conventional  
Heat Pump  
Off  
Off  
Off  
Off  
Dual Fuel  
AC Cool  
Off  
Off  
Off  
Off  
Off  
No Outdoor  
Unit  
Gas  
Gas  
Elec  
1
2
1
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
No Outdoor  
Unit  
Gas Heat  
No Outdoor  
Unit  
Off  
No Outdoor  
Unit  
Electric Heat  
1
1
2
2
1
2
Elec  
Elec  
Elec  
Elec  
Elec  
Elec  
Elec  
2
1
2
1
2
0
0
Off  
Off  
Off  
AC  
AC  
AC  
AC  
HP  
HP  
Off  
Off  
Electric System  
Off  
Off  
Off  
Off  
Off  
Off  
HP Only (HO)  
Fan Only  
No Outdoor  
Unit  
Elec  
0
Off  
Off  
Off  
Table 2 - DHM Bi-Color LED Table  
Table 3 - HM Bi-Color LEDTruthTable  
Table 4 - O/B Bi-Color LED Truth Table  
DHM DRY  
Switch Position  
DHM LED  
HM DRY  
Switch Position  
HM LED  
Reversing Valve  
Configuration  
O/B LED  
RH  
RH  
O mode  
B mode  
DHM2  
HM2  
7
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TROUBLESHOOTING  
Reset Operation  
If a voltage spike or static discharge blanks out the display or  
causes erratic thermostat operation, you can reset the system  
by removing batteries for 2 minutes. After resetting the  
system, replace the batteries. If the system has been reset  
and still does not function correctly perform a power reset.  
Note: When thermostat is reset, installer configuration menu  
settings and programming will reset to factory settings.  
To reset the programming, clock and configuration  
settings, press  
and  
and the SYSTEM touch keys  
simultaneously. The thermostat should go blank and then all  
segments will be displayed momentarily.  
Note: Be sure to review the installer configuration menu  
settings.  
Symptom  
Possible Cause  
Correction Action  
No Heat/No Cool/No Fan  
(common problems)  
1. Blown fuse or tripped circuit breaker.  
2. 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 system.  
Replace door panel in proper position to engage safety  
interlock or door switch.  
Check connections.  
No Heat  
No Cool  
1. Pilot light not lit.  
2. Furnace Lock-Out Condition. Heat  
may also be intermittent.  
3. Heat pump system requires service.  
See fault code table Comfort Alert.  
Re-light pilot.  
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.  
1. Cooling system requires service.  
See fault code table Comfort Alert.  
1. Possible short in wiring.  
2. Possible short in thermostat.  
Check each wire connection to verify they are not shorted  
or touching together. No bare wire should stick out from  
Heat, Cool or Fan  
Runs Constantly  
3. Possible short in heat/cool/fan system. under terminal block. Try resetting the thermostat as  
4. FAN Switch set to Fan ON.  
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.  
Thermostat Setting &  
Thermostat Thermometer  
Disagree  
1. Thermostat display setting  
requires adjustment.  
The display can be adjusted +/- 5 degrees. See  
Temperature Display Adjustment in the Configuration Menu  
section.  
Furnace (Air Conditioner)  
Cycles Too Fast or Too  
Slow (narrow or wide  
temperature swing)  
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.  
Comfort Alert™ Fault Codes  
Number Displayed in  
7 Segment LED  
Comfort Alert Fault  
P
1
2
3
4
5
6
7
8
9
Trip  
Long Run Time  
System Pressure Trip  
Short Cycling  
Locked Rotor  
Open Circuit  
Open Start Circuit  
Open Run Circuit  
Welded Contactor  
Low Voltage  
System Communication Codes  
E
C
Communication Error  
For 30 seconds after Communication  
established, then blank  
White-Rodgers is a division  
of Emerson Electric Co.  
The Emerson logo is a  
trademark and service mark  
of Emerson Electric Co.  

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