White Rodgers 1F89 0211 Thermostat User Manual

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1F89-211  
Non-programmable Electronic Digital  
Heat Pump Thermostat  
INSTALLATION AND  
OPERATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY  
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE  
PERSONAL INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
Your new White-Rodgers Digital Thermostat uses the  
technology of a solid-state microcomputer to provide precise  
temperature control.  
• Continuous Backlit display option  
°F/°C convertibility  
• Temperature range 45° to 90°F  
Features:  
• R, C, Y, W2, G, O/B, E, and L terminals for single or two-  
transformer systems  
• Optional "AA" batteries to provide continuous temperature  
display during loss of AC power  
• Simultaneous heat and cool setpoint storage  
• Setpoint storage in case of power loss  
• Pre-set temperature control  
• LCD continuously displays setpoint and room temperature  
PRECAUTIONS  
Thisthermostatisintendedforusewithalowvoltagesystem;do  
not use this thermostat with a line voltage system. If in doubt  
about whether your wiring is millivolt, line, or low voltage, have  
itinspectedbyaqualifiedheatingandairconditioningcontractor  
or electrician.  
WARNING  
!
Do not use on circuits exceeding specified voltage.  
Higher voltage will damage control and could cause  
shock or fire hazard.  
Do not exceed the specification ratings.  
Do not short out terminals on gas valve or primary  
control to test. Short or incorrect wiring will damage  
thermostat and could cause personal injury and/or  
property damage.  
Allwiringmustconformtolocalandnationalelectricalcodesand  
ordinances.  
This control is a precision instrument, and should be handled  
carefully. Roughhandlingordistortingcomponentscouldcause  
the control to malfunction.  
Thermostat installation and all components of the  
system shall conform to Class II (current limited) cir-  
cuits per the NEC code. Failure to do so could cause a  
fire hazard.  
CAUTION  
!
To prevent electrical shock and/or equipment dam-  
age, disconnect electric power to system at main fuse  
or circuit breaker box until installation is complete.  
SPECIFICATIONS  
ELECTRICAL DATA  
APPLICATIONS  
Electrical Rating:  
For use with:  
20 to 30 VAC 50/60 Hz. or D.C.  
0.05 to 1.0 Amps (Load per terminal)  
1.5 Amps Maximum Total Load (All terminals combined)  
• Standard heat pump systems with electric, gas or oil Aux  
heat with 24 VAC HOT and COMMON available  
• Single-stage heat pump systems with no Aux heat with  
24 VAC HOT and COMMON available  
THERMAL DATA  
Setpoint Temperature Range:  
45°F to 90°F (7°C to 32°C)  
Operating Ambient Temperature Range:  
32°F to 105°F  
Operating Humidity Range:  
0 to 90% RH (non-condensing)  
Shipping Temperature Range:  
-4°F to 149°F  
DO NOT USE WITH:  
• Millivolt systems  
• Systems exceeding 30 VAC and 1.5 amps  
• 3-wire zoned hydronic heating systems  
WHITE-RODGERS  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
ST. LOUIS, MISSOURI 63123-5398  
PART NO. 37-6233D  
Printed in U.S.A.  
Replaces 37-6233C  
0225  
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INSTALLATION  
REMOVE OLD THERMOSTAT  
Screw anchors  
1. Shut off electricity at the main fuse box until installation is  
complete. Ensure that electrical power is disconnected.  
2. Remove the front cover of the old thermostat. With wires  
still attached, remove wall plate from the wall. If the old  
thermostathasawallmountingplate,removethethermostat  
and the wall mounting plate as an assembly.  
3. Identify each wire attached to the old thermostat using  
the labels enclosed with the new thermostat.  
O/B  
switch  
4. Disconnect the wires from old thermostat one at a time.  
W904  
DO NOT LET WIRES FALL BACK INTO THE WALL.  
Mounting  
hole  
5. Install new thermostat using the following procedures.  
Reset switch  
(below Fan switch)  
ATTENTION!  
Electric/Gas  
jumper  
(W904)  
Mounting  
hole  
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.Ifacellbecomesdamaged,theunitshouldbediscarded.  
Figure 1. Thermostat Base  
Mercury must not be discarded in household trash. When the  
unit this product is replacing is to be discarded, place in a  
suitable container and return to White-Rodgers at 9797 Reavis  
Road, St. Louis, MO, 63123-5398 for proper disposal.  
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 ener-  
gized in COOL. If the thermostat you are replacing or the heat  
pump being installed with this thermostat requires a “B” termi-  
nal, to energize the changeover relay in HEAT, the O/B switch  
must be moved to the “B” position.  
ATTACH THERMOSTAT BASE TO WALL  
1. Remove the packing material from the thermostat. Gently pull  
the cover straight off the base. Forcing or prying on the  
thermostat will cause damage to the unit.  
2. Connect wires beneath terminal screws on base using  
appropriate wiring schematic (see figs. 2 through 4).  
CHECK THERMOSTAT OPERATION  
If at any time during testing your system does not operate  
properly, contact a qualified service person.  
3. Place base over hole in wall and mark mounting hole  
locations on wall using base as a template.  
Turn on power to the system.  
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,  
Fan Operation  
adjust until level, and then tighten screws. (Leveling is for If your system does not have a G terminal connection, skip to  
appearance only and will not affect thermostat operation.) If Heating System.  
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.  
1. Move fan switch to ON position. The blower should begin to  
operate.  
2. Move fan switch to AUTO position. The blower should stop  
6. Push excess wire into wall and plug hole with a fire-resistant  
immediately.  
material(suchasfiberglassinsulation)topreventdraftsfrom  
affecting thermostat operation.  
Heating System  
1. Move SYSTEM switch to HEAT position. If the auxiliary  
ELECTRIC/GAS JUMPER (Fan Option)  
heating system has a standing pilot, be sure to light it.  
Read the following information before clipping the nonelectric  
heat jumper. If you are unsure of your application, contact a  
qualified service person.  
2. Press  
to adjust thermostat setting to 1° above room  
temperature. The Heat Pump system should begin to oper-  
ate. However, if the Flame icon ( ) and Snowflake icon ( )  
are flashing, the compressor lockout feature is operating.  
Ifyouremergencyorauxiliarysystemwillenergizetheblower,then  
jumper, W904, on the thermostat base must be cut (see fig. 1).  
3. Adjust temperature setting to 4° above room temperature.  
The auxiliary heat system should begin to operate and tehe  
Flame icon will be flashing.  
If your emergency or auxiliary heat system requires that the  
thermostat energize the fan circuit, do not cut jumper W904.  
4. Press  
to adjust temperature setting below room tem-  
OPTIONAL BATTERIES  
perature. The heating system should stop operating.  
With two "AA" batteries installed, your thermostat will continu-  
ously display the temperature during a loss of AC power.  
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THERMOSTAT  
SYSTEM  
L
O/B  
Y
G
W2  
E
C
R
See Note **  
SYSTEM  
MONITOR  
SWITCH  
Changeover  
Relay*  
Fan  
Relay  
Emergency  
Relay  
Aux  
Relay  
Compressor  
Contactor  
(Stage 2)  
Hot  
24 VAC  
120 VAC  
Neutral  
* 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  
TRANSFORMER  
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency  
(Class II current limiting)  
Figure 2. Typical wiring diagram for single transformer systems  
NOTE  
If safety circuits are in  
only one of the systems,  
remove the transformer  
of the system with NO  
safety circuits.  
THERMOSTAT  
L
O/B  
Y
G
W2  
E
C
R
SYSTEM  
CUT AND  
TAPE OFF!  
SYSTEM  
MONITOR  
SWITCH  
See Note **  
Changeover  
Relay*  
Fan  
Relay  
Limit or  
Safety  
Switches  
Emergency  
Relay  
HOT  
24 VAC  
Aux  
Relay  
120 VAC  
Compressor  
Contactor  
NEUTRAL  
Hot  
(Stage 2)  
24 VAC  
120 VAC  
Neutral  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
TRANSFORMER  
(Class II current limiting)  
* 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  
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency  
Figure 3. Typical wiring diagram for two transformer systems with NO safety circuits  
NOTE  
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.  
THERMOSTAT  
L
O/B  
Y
G
W2  
E
C
R
SYSTEM  
Limit or  
Safety  
Limit or  
Safety  
Switches  
See Note **  
HOT  
Switches  
24 VAC  
120 VAC  
SYSTEM  
MONITOR  
SWITCH  
Changeover  
Relay*  
Fan  
Relay  
NEUTRAL  
Emergency  
Relay  
24 VAC  
Auxiliary  
Heating  
Transformer  
(Class II  
current  
NOTE  
ACCESSORY  
RELAY N.O.  
CONTACT  
Aux  
Relay  
(Stage 2)  
The accessory relay scheme  
is required when safety  
circuits exist in both systems.  
Compressor  
Contactor  
limiting)  
COMMON  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
Limit or  
Limit or  
Safety  
Switches  
Safety  
HOT  
Switches  
* 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  
24 VAC  
120 VAC  
COMMON  
NEUTRAL  
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency  
Heat Pump Transformer  
(Class II current limiting)  
Figure 4. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems  
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Cooling System  
CAUTION  
Emergency System  
EMER bypasses the Heat Pump to use the heat source wired to  
terminal E on the thermostat. EMER is typically used when com-  
pressor operation is not desired, or you prefer back-up heat only.  
!
Topreventcompressorand/orpropertydamage, ifthe  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
1. Move SYSTEM switch to EMER position. EMER will flash on  
the display.  
2. Press  
to adjust the thermostat above room tempera-  
1. Move SYSTEM switch to COOL position.  
ture. The Aux heating system will begin to operate. The  
flame icon ( ) will display flashing to indicate that the Aux  
system is operating  
2. Press  
toadjustthermostatsettingbelowroomtempera-  
ture.Theblowershouldcomeonimmediatelyonhighspeed,  
followed by cold air circulation  
3. Press  
toadjustthethermostatbelowroomtemperature.  
3. Press  
to adjust temperature setting above room tem-  
The Aux heating system should stop operating.  
perature. The cooling system should stop operating.  
CAUTION  
!
Do not allow the compressor to run unless the com-  
pressor oil heaters have been operational for 6 hours  
and the system has not been operational for at least 5  
minutes.  
OPERATION  
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. Your thermostat consists of  
two parts: the thermostat cover and the base. To remove the  
cover, pullitstraightoutfromthebase. Toreplacethecover, line  
up the cover with the base and press until the cover snaps onto  
the base.  
1
2
FAN  
OFF HEAT  
THE THERMOSTAT BUTTONS AND SWITCHES  
(see fig. 5)  
ON AUTO COOL  
EMER  
1
2
3
4
Raises temperature setting.  
Lowers temperature setting.  
4
3
FAN switch (ON, AUTO).  
SA SU  
PM  
SYSTEM switch (COOL, OFF, HEAT, EMER).  
AM  
THE DISPLAY  
FILTER  
EMER  
MALF  
5
Flame icon ( ) is displayed when the SYSTEM switch is in  
10  
8
5
8
7
6
5
9
the HEAT position. Flame icon ( ) is displayed flashing  
when 2nd-stage heat (Aux or Emergency) is energized.  
Snowflake icon ( ) is displayed (non-flashing) when the  
SYSTEM switch is in the COOL position. Snowflake and  
Flamearedisplayed(flashing)ifthethermostatisinlockout  
mode to prevent the compressor from cycling too quickly.  
Figure 5. Thermostat display, buttons, and switches  
CONFIGURATION MENU  
The configuration menu allows you to set certain thermostat  
operating characteristics to your system or personal require-  
ments.  
6
7
8
Indicates a malfunction with the system.  
Displays current temperature.  
Move SYSTEM switch to the OFF position, then press  
and  
EMER is displayed flashing when the system switch is in  
at the same time to enter the configuration menu. The  
display will show the first item in the configuration menu.  
EMER position.  
9
Displays current set temperature (this is blank when SYS-  
TEM switch is in the OFF position).  
The configuration menu chart summarizes the configura-  
tion options. An explanation of each option follows.  
Press  
and  
to change to the next menu item. To exit the  
10  
Displays FILTER when the system has run for the pro-  
grammedfiltertimeperiodasaremindertochangeorclean  
your air filter.  
menu, move the SYSTEM switch to HEAT or COOL. If no keys  
are pressed within fifteen minutes, the thermostat will exit the  
configuration menu.  
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2) Select FA or SL (Fast or Slow) Heat Pump stage Cycle  
Rate - The FA setting is used to produce shorter heating  
cycles. The SL setting produces a longer heating/cooling  
cycle. Both settings produce very accurate temperature  
control and can be set to your personal preference. FA  
cycles the system just under .75°F and the SL setting cycles  
at approximately 1.2°F.  
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 cur-  
rent or adjusted room temperature will be displayed on the  
right side of the display.  
8) Select Temperature Display (°F or °C) - Changes the  
display readout to Celsius or Fahrenheit as required. The  
current room temperature will be displayed on the right side  
of the display.  
3) Select FA or SL (Fast or Slow) Auxiliary or Emergency  
Cycle Rate - The FA setting is frequently used for gas, oil  
or electric heat. The SL setting produces a longer heating  
cycle. Both settings produce very accurate temperature  
control and can be set to your personal preference. FA  
cycles the system just under .6°F and the SL setting cycles  
at approximately 1.°F.  
9) Select Fast second stage - In the RUN mode, if the  
temperature is manually raised by 3°F (2°C) or more above  
room temperature using  
and the fast second stage  
feature is enabled, FA on, the second stage will energize  
immediately. With FA off, the second stage will not energize  
until the setpoint temperature is 10°F or more above room  
temperature.  
4) Select backlit display (d-L OFF or ON) - The display  
backlight improves display contrast in low lighting condi-  
tions. Selecting backlight ON will keep the light on continu-  
ously. Selecting OFF will keep the light off.  
OPERATING FEATURES  
5) Select filter replacement run time - The thermostat will  
display FILTER after a set time of operation. This is a  
reminder 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,  
Now that you are familiar with the thermostat buttons and  
display, read the following information to learn about the many  
features of the thermostat.  
SIMULTANEOUS HEATING/COOLING SETPOINT  
STORAGE — You can enter both your heating and cooling  
setpoints at the same time. There is no need to change the  
thermostat at the beginning of each season.  
you can clear it by pressing  
and  
at the same time.  
This resets the timer and starts counting the hours until the  
nextfilterchange. Contactyourheatpumpmanufacturerfor  
a specific replacement/maintenance interval.  
CONFIGURATION MENU — Allows you to customize  
certain thermostat options.  
6) Select Compressor Lockout (LOC OFF or ON) - Select-  
ing LOC 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 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  
featureisalreadypresentintheirsystem.Whenthethermostat  
compressor time delay occurs it will flash the Snowflake or  
Flame icon for about five minutes.  
SETTING THE THERMOSTAT  
This thermostat is very easy to operate. Set the SYSTEM switch  
to either HEAT or COOL then press  
or  
until the  
temperature you want to maintain is shown on the right side of  
the display. If you want to turn the system off, just move the  
SYSTEM switch to OFF.  
The FAN switch controls the fan operation. When the FAN  
switch is set to AUTO, the fan will cycle with the furnace or air  
7) Select Temperature Display Adjustment (4 LO to 4 HI) - conditioner. When the FAN switch is set to ON, the fan will run  
Allows you to adjust the room temperature display up to 4° continuously, regardless of SYSTEM switch position.  
Configuration Menu  
Step  
1
Press Button(s)  
Displayed (Factory Default) Press  
or  
to select:  
COMMENTS  
Set SYSTEM  
switch to OFF  
SYSTEM switch must be OFF to configure thermostat options  
Select FA or SL (Fast or Slow) pump cycle rate  
FA  
2
and  
and  
and  
and  
and  
(SL)  
Select FA or SL (Fast or Slow) Auxiliary and  
Emergency Aux heating cycle rate  
EMER  
(FA)  
SL  
3
d-L  
(on)  
Select display backlight OFF or ON  
Select filter replacement run time  
Select Compressor lockout OFF or ON  
4
OFF  
Filter  
0 to 1950 hours  
5
(000)  
(in 50 hour increments)  
LOC  
(OFF)  
6
on  
0 HI  
(0)  
4 LO to  
4 HI  
Select temperature display adjustment higher or lower  
Select temperature display to °F or °C  
7
8
9
and  
and  
and  
(F)  
°C  
FA  
(on)  
Select fast second-stage ON or OFF  
OFF  
Set SYSTEM switch  
to HEAT or COOL  
10  
Returns to normal operation  
* Press  
and  
to advance to next item  
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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 thermostat  
by pressing the reset button (see fig.1) . If the thermostat has power, has been reset and still does not function correctly contact  
your heating/cooling service person or place of purchase.  
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.  
Replace door panel in proper position to engage  
safety interlock or door switch.  
No Heat  
1. System Switch not set to Heat.  
Set System Switch to Heat and raise setpoint  
above room temperature.  
2. Loose connection to thermostat or system.  
Verify thermostat and system wires are securely  
attached.  
3. Heating System requires service or  
thermostat requires replacement.  
Diagonistic: 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.  
No Cool  
1. System Switch not set to Cool.  
Set System Switch to Cool and lower setpoint  
below room temperature.  
2. Loose connection to thermostat or system.  
Verify thermostat and system wires are securely  
attached.  
3. Cooling System requires service or thermostat  
requires replacement.  
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 (Item 6).  
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 screws. Try  
resetting the thermostat as described above.  
2. Possible short in thermostat.  
3. Possible short in Heat/Cool/Fan system.  
4. Fan Switch set to Fan On.  
If the condition persists, the manufacturer of  
your system or service person can instruct you  
on how to test the Heat/Cool system for correct  
operation. If the system operates correctly,  
replace the thermostat.  
Furnace 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  
Item 2 in the Configuration Menu is the adjustment  
that controls the cycle rate. If an acceptable cycle  
cycle rate.  
rate is not achieved using the FA (Fast) or SL  
(Slow) adjustment contact a local service person for  
additional suggestions.  
Cooling Cycles Too Fast or Too Slow  
(narrow or wide temperature swing)  
1. The location of the thermostat and/or the size  
The cycle rate for cooling is fixed and can not be  
of the Cooling System may be influencing the  
cycle rate.  
adjusted. Contact a local service person for  
suggestions.  
Thermostat Setting and Thermometer  
Disagree  
1. Thermostat thermometer setting requires  
adjustment.  
The thermometer can be adjusted +/- 4 degrees as  
listed in item 7 of the Configuration Menu. No other  
adjustment is possible.  
Blank Display and/or Keypad Not  
Responding  
1. Loss of power.  
Check heat/cool system for power.  
2. Voltage Spike or Static Discharge.  
If a voltage spike or static discharge occurs use the  
Reset Operation listed above.  
6

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