EasyManua.ls Logo

Honeywell RTH6400 User Manual

Honeywell RTH6400
52 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
Operating
Manual
RTH6400
Programmable Thermostat
69-2211EF-05
Question and Answer IconNeed help?

Do you have a question about the Honeywell RTH6400 and is the answer not in the manual?

Honeywell RTH6400 Specifications

General IconGeneral
TypeProgrammable Thermostat
Wi-Fi CapabilityNo
Hold FeatureYes
Filter Change AlertYes
Programmability Type7-day programmable
Temperature Range40°F to 90°F
Power SourceBattery
Programmability7-Day Programmable

Summary

Getting Started

Set Time and Day

Guide on setting the current time and day for proper thermostat operation.

Select Fan Setting

Instructions for choosing between Auto and On fan modes.

Select System Setting

Guidance on setting the system to Heat, Cool, or Off.

Setting the Time and Day

Adjusting Clock Time

Steps to adjust the thermostat's current clock time using buttons.

Selecting Day of Week

Procedure to select the current day of the week.

Selecting the Fan Setting

Fan Mode Options (Auto/On)

Explanation of Auto and On fan modes and their operation.

Selecting the System Setting

System Mode Options Overview

Details on Heat, Cool, Off, and Auto system modes.

Equipment Damage Hazard Warning

Cautionary note on operating cooling systems below 50°F to prevent damage.

Setting Program Schedules for Savings

Energy Saving Program Settings

Adjusting Program Schedules

Setting Weekday Schedules

Steps to set time and temperature for weekday periods.

Setting Weekend Schedules

Instructions for setting Saturday and Sunday schedules.

Temporary Schedule Override

Adjusting Temperature Temporarily

How to adjust temperature temporarily until the next scheduled period.

Permanent Schedule Override (Hold)

Setting a Permanent Hold

How to use the Hold feature to maintain a set temperature indefinitely.

Auto Changeover Feature

How Auto Changeover Works

Explanation of automatic switching between heating and cooling based on indoor temperature.

Maintaining Temperature Separation

How the thermostat maintains a 3-degree separation between heat and cool settings.

Auto Changeover Details

Auto Changeover Low Temperature Caution

Warning about using Auto Changeover with low outdoor temperatures.

Built-in Compressor Protection

Compressor Protection Functionality

Explains the feature that prevents compressor damage from rapid restarts.

Smart Response® Technology

Learning Temperature Attainment

How the thermostat learns system performance to reach temps by set times.

Battery Replacement Guide

Troubleshooting Common Issues

Troubleshooting System Response

Heating/Cooling System Not Responding

Steps to resolve issues where the system does not respond.

Related product manuals