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Emerson 1F85U-22NP - User Manual

Emerson 1F85U-22NP
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PART NO. 37-7572001
Replaces 37-7572D
2044
1F85U-22NP (Non-Programmable)
Installation and Operating Instructions
Universal Thermostat
Battery Powered or Hardwired with Common
emerson.com/white-rodgers
Thermostat Applications
Maximum
Stages
Heat/ Cool
Conventional Gas, Oil, Electric
(mV and 24V), Heat only, Cool only or
Heat/Cool Systems
2/2
Heat Pump (Air Source or Geothermal)
with Aux. Heat
2/1
Thermostat Installation
2-4
Wiring
2
Installer Menu
3-4
Test Equipment
4
Using the Thermostat
5-7
Thermostat Overview
5
User Menu
6
Thermostat Operation
6
Troubleshooting
7-8
Homeowner Help Line
8
INDEX
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.
Refer to www.thermostat-recycle.org for information
on disposing of products containing mercury.
Electrical Rating:
Battery Power ..................................... mV to 30 VAC, NEC Class II, 50/60 Hz
Input-Hardwire .................................... 20 to 30 VAC, 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)
Rated Dierentials (@ 6°F/ Hr): Fast Med Slow
Heat (Conventional Gas / Oil / Elect) ..... 0.5°F 0.75°F 1.9°F
Cool (Central Air) ................................. 0.9°F 1.2°F 1.7°F
Heat Pump (Heat and Cool) ................ 0.9°F 1.2°F 1.7°F
Heat Pump Aux. .................................. 0.5°F 0.75°F 1.9°F
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
SPECIFICATIONS
N
O
DE PIÈCE 37-7572001
Remplace 37-7572D
2044
1F85U-22NP (non programmable)
Instructions d’installation et d’utilisation
Thermostat universel
Alimentation par piles ou câblée avec l commun
Applications du thermostat
Nombre
maximum
d’étages
chauage/
climatisation
Systèmes au gaz classique , au mazout,
à l’électricité (mV et 24 V), chauage
seulement, climatisation seulement ou
chauage et climatisation
2/2
Thermopompe (source d’air ou
géothermique) avec chauage auxiliaire
2/1
Installation du thermostat
2-4
Câblage
2
Menu de l’installateur
3-4
Mise à l’essai de l’équipement
4
Utilisation du thermostat
5-7
Aperçu du thermostat
5
Menu de l’utilisateur
6
Fonctionnement du thermostat
6
Horaire du thermostat
7
Dépannage
7-8
Ligne d’assistance pour les propriétaires
8
INDEX
AVIS RELATIF AU MERCURE : Ce produit ne contient pas de
mercure. Il peut toutefois remplacer un produit qui en contient.
Le mercure et les produits contenant du mercure ne doivent pas
être jetés dans les ordures ménagères. Consultez le site
www.thermostat-recycle.org pour connaître les endroits où
vous pouvez envoyer le produit contenant du mercure.
Paramètres électriques :
Batterie ................................................................. mV à 30 V c.a., NEC classe II, 50/60 Hz
Câblé ..................................................................... 20 à 30 V c.a., NEC classe II, 50/60 Hz
Charge à la borne ........................................................ 1,5 A par borne, 2,5 A maximum pour toutes les bornes combinées
Plage de réglage ......................................................... 45 à 99 °F (7 à 37 °C)
Diérentiel nominal (@ 6 °F/h) : Rapide Moyen Lent
Chauage (gaz classique/mazout/électricité) ......... 0,5 °F 0,75 °F 1,9 °F
Climatisation (centrale) ......................................... 0,9 °F 1,2 °F 1,7 °F
Thermopompe (climatisation et chauage) .......... 0,9 °F 1,2 °F 1,7 °F
Thermopompe, chauage auxiliaire ...................... 0,5 °F 0,75 °F 1,9 °F
Température ambiante de fonctionnement ................ 32 °F à +105 °F (0 à +41 °C)
Plage de températures achées ................................... 32 °F à +99 °F (0 à 37 °C)
Humidité de fonctionnement ...................................... 90 % max. sans condensation
Plage de températures d’expédition ........................... -20 °F à +150 °F (-29 à +65 °C)
Dimensions du thermostat ......................................... 3-3/4 po H x 6 po L x 1-1/8 po P
SPÉCIFICATIONS
Accessoire en opon : plaque murale F61-2663, 6-3/4 po L x 4-1/2 po H
Optional Accessory: Wall
Cover-Up Plate F61-2663,
6 3/4” W x 4 1/2” H
emerson.com/white-rodgers

Table of Contents

Questions and Answers

  • S
    smithnicoleJul 27, 2025
    Why is there no heat from my Emerson 1F85U-22NP?
    • E
      Elizabeth FarleyJul 27, 2025
      If your Emerson Thermostat is not producing heat, ensure the system is set to 'Heat'. Also, verify that the thermostat and system wires are securely attached. To diagnose if the thermostat is working, set the system to 'Heat' and raise the setpoint above room temperature. Within five minutes, the thermostat should make a soft click sound, and 'Heat On' should appear on the display. If the thermostat does not click, try the reset operation. If it still doesn't click after being reset, consider a replacement. If it clicks but there is still no heat, contact the furnace manufacturer or a service person to verify the heating system is operating correctly.
  • H
    harrismichaelAug 1, 2025
    What to do if my Emerson Thermostat has no heat, cool, or fan?
    • J
      Joshua HenryAug 1, 2025
      If your Emerson Thermostat isn't producing heat, cool air, or running the fan, there are several things you can check: * Ensure that you haven't blown a fuse or tripped a circuit breaker. If so, replace the fuse or reset the breaker. * Verify that the furnace power switch is turned to the 'ON' position. * Make sure the furnace blower compartment door panel is correctly installed to engage the safety interlock or door switch. * Check for loose connections to the thermostat or system and tighten them.
  • U
    uruizAug 5, 2025
    Why does my Emerson Thermostat constantly run heat, cool, or fan?
    • B
      Barry GuerreroAug 5, 2025
      If the heat, cool, or fan runs constantly on your Emerson Thermostat, it could be due to a short in the wiring, thermostat, or the heating/cooling/fan system itself. Check each wire connection to ensure they are not shorted or touching other wires. You can also try resetting the thermostat.
  • A
    Anthony FosterAug 9, 2025
    What to do if my Emerson 1F85U-22NP Thermostat displays 'Call for Service'?
    • S
      Susan NguyenAug 9, 2025
      The 'Call for Service' icon on your Emerson Thermostat can appear for several reasons: 1. The heating system may not be able to heat the space to within 10 degrees of the setpoint within 2 hours. See corrective action for 'No Heat'. 2. The cooling system may not be able to cool the space to within 10 degrees of the setpoint within 2 hours. See corrective action for 'No Cool'. 3. If '--' is displayed for the Room Temperature, a replacement thermostat is needed. Replace the thermostat. 4. If none of the buttons operate on the thermostat, make sure keypad lockout is not turned on. If it’s OFF, try reset. 5. If 'Call for Service' is flashing, the compressor self diagnostic is detecting an issue with the outdoor unit.
  • N
    Natalie ColemanAug 13, 2025
    Why is there no cool air from my Emerson Thermostat?
    • K
      Keith GarciaAug 13, 2025
      If your Emerson Thermostat is not producing cool air, first ensure that the system is set to 'Cool'. Next, verify that the thermostat and system wires are securely attached. To diagnose, set the system to 'Cool' and lower the setpoint below room temperature, following the same diagnostic procedures as for a 'No Heat' condition.
  • L
    Lisa LynchAug 18, 2025
    How to adjust the temperature display on my Emerson 1F85U-22NP Thermostat?
    • K
      Kenneth WrightAug 18, 2025
      If the temperature displayed on your Emerson Thermostat doesn't match the actual room temperature, you can adjust the display +/-5 degrees.
  • M
    Martin ChenAug 22, 2025
    Why does my Emerson 1F85U-22NP Thermostat cycle too fast or slow?
    • M
      Melissa PhillipsAug 22, 2025
      If your Emerson Thermostat cycles too fast or slow, creating narrow or wide temperature swings, it might be due to the thermostat's location or the size of the heating system. Digital thermostats provide precise control and cycle faster than older mechanical models, turning on and off more frequently but running for a shorter time. To increase the cycle time, choose 'SLO' for slow cycle in the Installer menu.

Summary

Specifications

Thermostat Applications

Details system compatibility for conventional, heat pump, and auxiliary heat systems.

Thermostat Installation

Wiring

Provides a terminal designation table and function descriptions for thermostat wiring.

Precautions

Lists essential safety warnings and handling guidelines for thermostat installation.

Installer Menu

Test Equipment

Fan Operation

Instructions for testing the fan operation in On and Auto modes.

Heating System

Steps to test the heating system, including auxiliary heat for heat pumps.

Auxiliary System

Procedure to test the auxiliary heat-only mode for heat pumps.

Cooling System

Procedure for testing the cooling system operation and compressor delay.

Using the Thermostat

Thermostat Overview

Identifies thermostat buttons, switches, and display indicators.

User Menu

Thermostat Operation

Troubleshooting

No Heat;No Cool;No Fan

Addresses common issues like blown fuses, loose connections, and system settings.

No Heat

Diagnoses and corrects issues related to the heating system not operating.

No Cool

Diagnoses and corrects issues related to the cooling system not operating.

Heat, Cool or Fan Runs Constantly

Troubleshoots scenarios where system modes run continuously.

Thermostat Display & Thermometer Disagree

Explains how to adjust display readings and potential causes for discrepancies.

Furnace (Air Conditioner) Cycles Too Fast or Slow

Addresses thermostat cycle rate issues and potential system influences.

Resetting the Thermostat or Thermostat Settings

Emerson 1F85U-22NP Specifications

General IconGeneral
Product TypeThermostat
Stages2 Heat / 1 Cool
Display TypeDigital
Voltage24V AC
BacklightYes
Power SourceBattery
Terminal DesignationsR, W, Y, G
Operating Humidity Range5 to 90% RH, non-condensing
Operating Temperature Range32°F to 105°F
Temperature Range45°F to 90°F (7°C to 32°C)
MountingWall

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