1F85U-22NP (Non-Programmable)
THERMOSTAT INSTALLATION
Installation and Operating Instructions
TM
WIRING
80 Series Universal Thermostat
Battery Powered or Hardwired with Common
Refer to equipment manufacturer’s instructions for specific system wiring information. After wiring, see
INSTALLER MENU for proper thermostat configuration. Wiring table shown are for typical systems and
describe the thermostat terminal functions. Wiring will change when dedicated emergency heat is on
(See Installer Menu #15).
Terminal Designations
Terminal Function
RC
Power (24V) - Cooling
RH
Power (24V) - Heating
Reversing Valve or output for 3 wire zone valves
Configurable as “O” or “B” Reversing Valve or 3 wire
zone heat (power close)
O/B
6 (not shown) - 3 wire zone valve
Y
1st Stage Compressor (conventional or heat pump)
G
Fan Relay
1st Stage Heat (conventional);
1st Stage Auxiliary Heat (heat pump)
Can operate as Emergency Heat only
(See Installer Menu #15)
W/E
C
L
Common wire for 24V (optional with batteries)
Optional Accessory: Wall Cover-Up Plate F61-2663, 6-3/4” W x 4-1/2” H
INDEX
Heat Pump Malfunction / Diagnostic terminal
(input signal requires common)
Thermostat Installation
2-4
2
Maximum
Stages
Y2
2nd Stage compressor (conventional only)
Thermostat Applications
Wiring
Heat/ Cool
2nd Stage Heat (Conventional)
Can operate as 1st Stage Auxiliary Heat
(See Installer Menu #15)
Installer Menu
3-4
4
W2
Conventional Gas, Oil, Electric
(mV and 24V), Heat only, Cool only or
Heat/Cool Systems
2/2
2/1
Test Equipment
Using the Thermostat
Thermostat Overview
User Menu
5-7
5
Heat Pump (Air Source or Geothermal)
with Aux. Heat
Leveling Thermostat
Leveling is for appearance only and
will not affect thermostat operation.
6
Thermostat Operation
Troubleshooting
Homeowner Help Line
6
MERCURY NOTICE: This product does not contain
mercury. However, this product may replace a product
that contains mercury. Mercury and products containing
mercury must not be discarded in household trash.
on disposing of products containing mercury.
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Precautions
SPECIFICATIONS
• Do not exceed the specification ratings.
Electrical Rating:
• 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.
Battery Power ..................................... mV to 30VAC, NEC Class II, 50/60 Hz
Input-Hardwire.................................... 20 to 30VAC, NEC Class II, 50/60 Hz
Terminal Load.......................................... 1.5 A per terminal, 2.5A maximum all terminals combined
Setpoint Range ........................................ 45° to 99° F (7° to 37° C)
WARNING
!
Rated Differentials (@ 6°F/ Hr):
Fast
Med
Slow
1.9°F
1.7°F
1.7°F
1.9°F
CAUTION
!
Do not use on circuits exceeding specified voltage.
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 burn
out thermostat and could cause personal injury
and/or property damage.
Heat (Conventional Gas / Oil / Elect)..... 0.5°F
Cool (Central Air) ................................. 0.9°F
Heat Pump (Heat and Cool) ................ 0.9°F
Heat Pump Aux. .................................. 0.5°F
0.75°F
1.2°F
1.2°F
0.75°F
To prevent electrical shock and/or equipment
damage, disconnect electrical power to system,
at main fuse or circuit breaker box,until
installation is complete.
Operating Ambient .................................. 32°F to +105°F (0° to +41°C)
Display Temperature Range ....................... 32°F to +99°F (0 to 37°C)
Operating Humidity ................................. 90% non-condensing maximum
Shipping Temperature Range................... -20°F to + 150°F (-29° to +65°C)
Thermostat Dimensions........................... 3-3/4” H x 6” W x 1-1/8” D
CAUTION
!
To prevent compressor and/or property damage, if the outdoor temperature is below 50°F,
DO NOT operate the cooling system.
Do not allow the compressor to run unless the compressor oil heaters have been operational
white-rodgers.com
emersonclimate.com
PART NO. 37-7572B-EN
for 6 hours and the system has not been operational for at least 5 minutes.
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1535
USER MENU
USING THE THERMOSTAT
THERMOSTAT OVERVIEW
Before you begin using your thermostat, you should be familiar with its features, display and
the location/operation of the thermostat buttons and switches.
To customize thermostat settings, press the Menu button from the home screen. Use the
or buttons to highlight Settings and press Next. Use Next and Back to navigate
through menu items. Press or to change the setting.
User’s Menu #
(Press Menu button
and release)
Default Setting Settings
Description
(flashing icons) (Press or
)
THERMOSTAT BUTTONS
THE DISPLAY
°F – Fahrenheit
Fahrenheit or Celsius
°F
AND SWITCHES
01
02
°C – Celsius
1.) Fan Button
8.) Next (Menu button) is used to navigate within a menu
Temperature Display
Adjustment: adjust the Room
Temperature
0
-5 to +5
2.) Away Button (set a frequently used
9.) Back (Fan button) is used to navigate within a menu
temperature)
Continuous Display Light:
keep the backlight always on –
“C” wire required
On – always on
OFF – momentarily
3.) System Button
10.) Exit (Away button) returns to the home screen
OFF
03
4.) Backlight Button (located on the top 11.) Thermostat is protecting the equipment from short cycling
of the thermostat)
(5-minute delay)
Auto-Changeover: thermostat
automatically switches between
heat and cool
On - enable auto
OFF - disable auto
OFF
OFF
5.) Raises Temperature Setting
12.) Indicates that the system is running in Cool, Heat or Auxiliary
mode. (Heat Pump Only -The auxiliary will run in Heat mode
when the heat pump cannot maintain the set temperature.)
04
05
Keypad Lock: prevent unwant-
ed changes to the thermostat
On – disable buttons
OFF – all buttons are active
6.) Access Menu Options
13.) SEE TROUBLESHOOTING
7.) Lowers Temperature Setting
14.) Battery status indicator
15.) Replace battery indicator
16.) Temperature setpoint
THERMOSTAT OPERATION
• Away – Stores a frequently used temperature setting so that you can select it with a
touch of the Away button. To set an Away temperature press temp up or temp down
to the temperature you want. At the desired setting, hold the Away button for 3 seconds.
When the setting is stored the set point will flash one time.You can store an Away setting
for both Cool and Heat modes. (Example: Set an Away temperature to 88°F in the summer
for cooling and 55°F in the winter for heating.)
17.) Appears when the keypad is locked (to prevent unwanted
changes)
15
16
4
14
• Keypad Lockout – To prevent unwanted changes, the buttons can be disabled.
To turn this feature On, press and hold and the Menu button unꢀl the icon appears
(this can also be turned on in the menu). To turn Off, press and hold and the Menu but-
ton for 3 seconds.
5
13
12
17
6
7
11
8
3
1
2
10
9
Whenever “
Replace ” appears in the display, new premium brand AA alkaline batteries
“
”
should be installed. If the house will be unoccupied for an extended period and either
or “
Replace ” is displayed, install new batteries before leaving.
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6
TROUBLESHOOTING (C0ntinued)
TROUBLESHOOTING
Symptom
Possible Cause
Corrective Action
Symptom
Possible Cause
Corrective Action
1.) Heating system is not able to heat 1.) See corrective action for “No Heat”
the space to within 10 degrees of
1.) Blown fuse or tripped circuit
breaker
2.) Furnace power switch to OFF
3.) Furnace blower compartment
door panel loose or not properly
installed
4.) Loose connection to thermostat
or system
1.) Replace fuse or reset breaker
the setpoint within 2 hours
2.) Cooling system is not able to cool 2.) See corrective action for “No Cool”
the space to within 10 degrees of
2.)Turn switch to ON
3.) Replace door panel in proper position to
engage safety interlock or door switch
No Heat/
No Cool/
the setpoint within 2 hours
“Call for Service” 3.) If “--” is displayed for the Room
No Fan
3.) Replace thermostat
(common problem)
icon appears on
displayed
Temperature, a replacement
thermostat is needed
4.) None of the buttons operate on
the thermostat
4.) Tighten Connections
4.) Make sure keypad lockout is not turned on ( ),
If it’s OFF, try reset shown below.
1.) System not set to Heat
1.) Set thermostat to Heat.
5.) If “Call for Service” is flashing,
compressor self diagnostic is
detecting an issue with the
outdoor unit
5.) Contact a service person to verify the outdoor
equipment is operating correctly
2.) Loose connection to thermostat 2.) Verify thermostat and system wires are
or system
securely aꢁached.
3.) Heating System requires
service or thermostat requires
replacement
3.) Diagnosꢀc: Set System to Heat and raise the
setpoint above room temperature. Within five
minutes the thermostat should make a soſt click
sound and “Heat On” should appear on display.
This sound indicates the thermostat is operaꢀng
properly. If the thermostat does not click, try the
reset operaꢀon listed below. If the thermostat
does not click aſter being reset, contact your
heaꢀng 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 heaꢀng system is
operaꢀng correctly.
Resetting the Thermostat or Thermostat Settings
No Heat
If the thermostat has good batteries, but has a blank display or does not respond to key
presses, the thermostat should be reset by removing the batteries for 2 minutes. This reset
will not change the menu settings or program. If the condition persists after reinstalling the
batteries, replace the thermostat.
To conveniently reset only the schedule and user settings back to factory defaults, press Menu
and Backlight buttons at the same time and hold until the display goes blank and resets.
1.) System not set to Cool
1.) Set thermostat to Cool.
2.) Loose connection to thermostat 2.) Verify thermostat and system wires are securely
or system
aꢁached.
3.) Cooling System requires
service or thermostat requires
replacement
3.) Diagnosꢀc: Set System to Cool and lower
setpoint below room temperature. Same
procedures as diagnosꢀc for “No Heat” condiꢀon
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 opꢀon
is selected in the installer menu. (see INSTALLER
MENU, item 50)
No Cool
Check each wire connection to verify they are not
Heat, Cool or Fan Possible short in wiring, thermostat, shorted or touching other wires. Try resetting the
Runs Constantly
heat, cool or fan system
thermostat. If the condition persists contact your
HVAC service person.
Thermostat
Display &
Thermometer
Disagree
Thermostat display requires
adjustment
Display can be adjusted +/-5°. See User Menu
item 05
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. If you would like to increase
cycle time, choose SLO for slow cycle in the
Installer menu. (Reference menu items 30, 32 &
35.) If an acceptable cycle rate is not achieved,
contact your HVAC service person.
Furnace (Air
Conditioner)
Cycles Too Fast or
Slow (narrow or
wide temperature
swing)
The location of the thermostat and/
or the size of the Heating System
may be influencing the cycle rate
HOMEOWNER HELP LINE: 1-800-284-2925
(Troubleshooting continued on next page)
White-Rodgers is a business
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
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