Emerson 1F85U-42PR manual

Emerson 1F85U-42PR
7.8 · 5
PDF manual
 · 12 pages
English
manualEmerson 1F85U-42PR
PART NO. 37-7554B-EN
1535

1F85U-42PR (Programmable)

Installation and Operating Instructions
80 Series
TM
Universal Thermostat
Battery Powered or Hardwired with Common
white-rodgers.com
emersonclimate.com
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
4/2
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
Thermostat Schedule
7
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 (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

Optional Accessory: Wall Cover-Up Plate F61-2663, 6-3/4” W x 4-1/2” H
Terminal Designations Terminal Function
RC
Power (24V) - Cooling
RH
Power (24V) - Heating
O/B
6 (not shown) - 3 wire zone valve
Reversing Valve or output for 3 wire zone valves
Congurable as “O” or “B” Reversing Valve or 3 wire
zone heat (power close)
Y
1st Stage Compressor
G Fan Relay
W/E
1st Stage Heat (conventional);
1st Stage Auxiliary Heat (heat pump)
Can operate as Emergency Heat only
(See Installer Menu #15)
C
Common wire for 24V (optional with batteries)
L
Heat Pump Malfunction / Diagnostic terminal
(input signal requires common)
Y2 2nd Stage compressor
W2
2nd Stage Heat (Conventional)
2nd Stage Auxiliary Heat (Heat Pump)
Can operate as 1st Stage Auxiliary Heat
(See Installer Menu #15)

WIRING

Refer to equipment manufacturer’s instructions for specic system wiring information. After wiring, see INSTALLER MENU for proper thermostat conguration. 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).

THERMOSTAT INSTALLATION

Precautions

• Do not exceed the specication ratings.
• All wiring must conform to local and national electrical codes and ordinances.
• This control is a precision instrument, and should be handled carefully. Rough handing or
distorting components could cause the control to malfunction.
WARNING
!
Do not use on circuits exceeding specied voltage.
Higher voltage will damage control and could
cause shock or re 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.
CAUTION
!
To prevent electrical shock and/or equipment
damage, disconnect electrical power to system,
at main fuse or circuit breaker box,until
installation is complete.
Leveling Thermostat
Leveling is for appearance only and
will not aect thermostat operation.
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
for 6 hours and the system has not been operational for at least 5 minutes.
2

View the manual for the Emerson 1F85U-42PR here, for free. This manual comes under the category thermostat and has been rated by 5 people with an average of a 7.8. This manual is available in the following languages: English. Do you have a question about the Emerson 1F85U-42PR or do you need help? Ask your question here

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Question and answer

Number of questions: 23
J
Jim St. Cyr March 1, 2021

My heat heat pump runs approximately 4 minutes after thermostat setting is reached (heated air, not just the fan). Is this normal?

1 comment
E
Emma of manua.lsDecember 19, 2023

Yes, it is normal for a heat pump to continue running for approximately 4 minutes after the desired temperature is reached. This is to ensure that the air is heated to the desired temperature and to maintain a consistent temperature in the room.

This answer is automatically generated
D
DawnJune 8, 2021

I got up in middle of the night and accidentally changed the settings in the "menu" button while trying to make the ac kick on. How should it be set?

I got up in middle of the night and accidentally changed the settings in the "menu" button while trying to make the ac kick o...
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1 comment
E
Emma of manua.lsDecember 18, 2023

After accidentally changing the settings in the "menu" button of the Emerson 1F85U-42PR thermostat, you can follow these steps to reset them: 1. Press and hold the Menu button for 8 seconds to access the INSTALLER MENU. 2. Use the Next and Back buttons to navigate through the menu items. 3. Locate the menu item labeled "Outdoor Equipment" (item 05) and press the Up or Down button to select the desired equipment (AC or heat pump) and the number of stages. 4. Continue navigating through the menu items and adjust any other settings as needed. 5. Once you have made the necessary changes, exit the menu by pressing the Exit button.

This answer is automatically generated
C
Cheryl StullerJune 6, 2020

My Emerson thermostat is not displaying the cooling option any longer and the cool air is not working, why?

M
MarkAugust 15, 2020

I don't want to use any of the fancy features just want basic setting does that mean I set menu #1on 0 "non-programmable"?what is the menu #5 "temperature display adjustment do? -5 to +5. You should have a definition of terms for a 63 year old non tech savvy old man. Thx

1 comment
E
Ed ArensbergSeptember 24, 2020

how do i turn on backlight?

H
How do I get rid of the P onelorettaDecember 21, 2020

I normally do not program and just raise and lower with the buttons on the right. Last night “P 1 “showed up on the screen and it did not lower the temperature I pressed into the buttons on the right. How do I get rid of the P one

L
Louis FoxApril 21, 2023

Does the hold button keep the temperature at constant level and automatically switch between heat and AC as needed?

R
Richard October 27, 2023

I have an Emerson 1F85U-42PR themostate. Do I need to have the Fan mode turned on? or can it be left off? what is suggested?

G
Geraldine Slater November 18, 2023

why does my heater run for long periods of time using the Emerson programmable thermostat 1F85U-42PR (80 series)?

T
Travis RomeroJune 13, 2021

How do I change the minimum cool limit on my thermostat

How do I change the minimum cool limit on my thermostat
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D
dave nykanenFebruary 10, 2021

if85u 42pr fan runs on call for heat on startup,blowing cold air,71/2 gas rooftop

The Emerson 1F85U-42PR thermostat is a highly functional and efficient device designed for controlling the temperature of your home or office. It is specifically designed to ensure comfort and convenience with its user-friendly interface and precise temperature control capabilities. This thermostat is equipped with advanced features such as programmable schedules, allowing you to set different temperature settings for various times of the day or days of the week. This enables you to optimize energy usage and reduce utility costs. Additionally, it offers a large, easy-to-read digital display that clearly indicates the current temperature and other status information. With its compatible single-stage heating and cooling capability, the Emerson 1F85U-42PR thermostat is compatible with a wide range of HVAC systems, ensuring versatility and compatibility with your existing equipment. It also provides precise temperature control accuracy, allowing you to maintain your desired comfort level at all times. The Emerson 1F85U-42PR features a durable and long-lasting construction, ensuring reliability and performance over time. It is crafted with high-quality materials and advanced technology to withstand daily usage and provide consistent temperature control. In conclusion, the Emerson 1F85U-42PR thermostat is a reliable, user-friendly, and efficient device designed to optimize temperature control in your home or office. With its advanced features and durability, it ensures comfort and convenience while helping you save energy and reduce utility costs.

General
BrandEmerson
Model1F85U-42PR
Productthermostats
LanguageEnglish
FiletypeUser manual (PDF)

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Emerson 1F85U-42PR below.

Where is the best location to place the thermostat?

The best place for the thermostat is the room where you spend the most time, in many cases the living room or kitchen. Place the thermostat about one and a half metres above the floor, not in the sun and not on an outside wall.

What is the dead band of a thermostat?

If your thermostat has a dead band, your installation is, as it were, 'at rest'. The thermostat only switches on when, for example, the difference deviates more than 2˚C from the set room temperature.

What is the ideal room temperature?

Most people find that the ideal room temperature is between 19 and 22 degrees Celsius.

How do I set the desired temperature on my Emerson 1F85U-42PR thermostat?

To set your desired temperature, simply press the up or down arrows on the thermostat until the desired temperature is displayed on the screen.

I want to program specific temperature settings at different times of the day. How can I do that?

To program temperature settings at different times, press the "Program" button on the thermostat. Then, use the arrows to navigate to the desired time slot and temperature, and press the "Program" button again to save your settings.

My thermostat isn't turning on the heating/cooling system. What could be the issue?

Check if the thermostat's display is on and functioning properly. If it's not, ensure that the thermostat is receiving power by checking the circuit breaker or replacing the batteries. Also, make sure the system switch is set to "Heat" or "Cool" depending on your needs.

Can I disable the programmed schedule and manually control the temperature?

Yes, you can override the programmed schedule by pressing the "Hold" button on the thermostat. This will allow you to manually control the temperature until you press the "Hold" button again to resume the programmed schedule.

How do I adjust the thermostat's settings, such as heat/cool temperature differential or fan operation mode?

To access the thermostat's settings, press the "Menu" button. Then, use the arrows to navigate through the various options, such as differential settings or fan modes. Once you find the desired setting, press "Enter" to make adjustments and save your changes.

Is the manual of the Emerson 1F85U-42PR available in English?

Yes, the manual of the Emerson 1F85U-42PR is available in English .

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