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Honeywell Home RTH2300 Series User Manual

Honeywell Home RTH2300 Series
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Owners Manual
Read and save these
instructions.
For help please visit
honeywellhome.com
RTH2300/RTH221
Series
Programmable
Thermostat
M37777
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
Identify System Type
This thermostat is compatible with the following systems:
Gas, oil or electric furnace
Central air conditioner
Hot water system with or without pump
Millivolt system
Central heating and cooling system
Heat pump without auxiliary/backup heat
Do you need assistance? We are here to help.
Call 18004681502 for wiring assistance before returning
the thermostat to the store.
This thermostat cannot be used on heat pumps with
backup heat or on multistage systems.
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Do you have a question about the Honeywell Home RTH2300 Series and is the answer not in the manual?

Honeywell Home RTH2300 Series Specifications

General IconGeneral
Display TypeDigital
Power SourceBattery (2 AA)
Stages1 Heat/1 Cool
Temperature Range40°F to 90°F (4°C to 32°C)
Hold FeatureYes
Filter Change AlertNo
ProgrammableYes
Temperature ControlPrecise Temperature Control (+/- 1 degree F)
Weight0.5 lbs
CompatibilitySingle Stage Systems (Heat & Cool)

Summary

Identify System Type

Customer Assistance and Notices

Support Contact Information

Provides phone numbers and website for user assistance and wiring help.

Mercury Recycling Notice

Informs about mercury in older thermostats and recycling guidelines.

Safety Notice

Warns against running AC in low outdoor temperatures to prevent compressor damage.

Installation Guide

Turn Off Power

Disconnect power to the heating/cooling system before proceeding.

Remove Old Thermostat

Step to remove the existing thermostat, leaving the wallplate attached.

Label Wires

Instruction to tag wires with appropriate labels before disconnecting them.

Separate Wallplate

Step to detach the new wallplate from the thermostat unit.

Mount Wallplate

Instructions for securing the new wallplate to the wall.

Connect Wires

Guide for connecting labeled wires to the corresponding terminals on the wallplate.

Alternate Wiring Options

Details on specific wiring configurations for various system types.

Install Batteries

Steps for inserting the required AAA batteries into the thermostat.

Set Fan Operation Switch

Adjusting the fan switch based on system type (Gas/Oil vs. Electric/Heat Pump).

Install Thermostat onto Wallplate

Attaching the main thermostat unit to the mounted wallplate.

Turn Power Back On

Instruction to restore power to the heating/cooling system.

System Setup and Configuration

Identify Your System Type

Helps determine if advanced setup is required for optimal operation.

Advanced Installation Setup

Guides through advanced system configuration steps for specific needs.

Changing Settings During Setup

How to navigate and modify settings within the advanced setup menu.

Thermostat Features and Operation

Compressor Protection

Explains the safety mechanism that prevents compressor damage from rapid cycling.

Controls and Display Overview

Thermostat Control Buttons

Description of the Set, Hold, Run, System, and Fan switches and their functions.

Display Screen Elements

Explains how to read indicators for setpoint, time, temperature, and system status.

Programming Your Thermostat

Setting Time and Day

Procedure to accurately configure the current time and day on the thermostat.

Program Schedule Setup

Defining wake, leave, return, and sleep periods with desired temperatures.

Schedule Adjustments

Temporary Schedule Override

How to temporarily adjust temperature settings without permanently altering the programmed schedule.

Permanent Schedule Hold

How to lock in a specific temperature, overriding the programmed schedule indefinitely.

Maintenance and Specifications

Filter Change Reminder

How to manage the filter replacement alert on the RTH2300 model.

Battery Replacement

Instructions for replacing the thermostat's batteries when low battery warning appears.

Electrical Ratings

Technical details on voltage and maximum current ratings for terminal connections.

Troubleshooting and Warranty

Common Troubleshooting Issues

Solutions for common problems like blank display, system non-response, and setting issues.

One-Year Limited Warranty

Details of the product's warranty terms, coverage, and limitations.

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