honeywell thermostat – Smart Home Perfected https://www.smarthomeperfected.com The Ultimate Smart Home Resource! Tue, 30 Apr 2024 14:21:41 +0000 en-US hourly 1 https://www.smarthomeperfected.com/wp-content/uploads/2020/01/cropped-icon-1-32x32.png honeywell thermostat – Smart Home Perfected https://www.smarthomeperfected.com 32 32 227197439 Honeywell Thermostat Instruction Manuals (All Models) https://www.smarthomeperfected.com/honeywell-thermostat-manuals/ https://www.smarthomeperfected.com/honeywell-thermostat-manuals/#comments Tue, 30 Apr 2024 14:21:41 +0000 https://smarthomeperfected.com/?p=5258---f1735c27-fd13-4689-b87d-69b713e71de3 Need help troubleshooting your Honeywell Thermostat? We have the top Honeywell Thermostat manuals and installation guides to get you back up and running!

The post Honeywell Thermostat Instruction Manuals (All Models) appeared first on Smart Home Perfected.

]]> Undeniably, it is incredibly frustrating when an unforeseen power fluctuation disrupts your heating, cooling, or ventilation systems, often requiring intricate repairs. Similarly, the absence of a comprehensive user manual or troubleshooting guide for your Honeywell thermostat can lead to equal confusion and irritation should issues arise.

To make life easy, we’ve pulled together a list of the top Honeywell thermostat instruction manuals to get you back up and running!

Note: Updated May 2023 with manuals for the latest Honeywell Thermostat models RTH8800WF2022 & RTH9600WF along with a few others that were missing from our list.

How to find your Thermostat Model Number?

To find the correct manual for your Honeywell Thermostat, it's best to find the specific model number of your device. Generally speaking, the model number is either printed on the back of the face plate (which can be removed by either unscrewing or gently pulling / grasping) or is available through the interface.

At Smart Home Perfected we always advise readers not to undertake any work they are not competent in performing and if, in any doubt, it is best to seek the assistance of a professional.

Honeywell Thermostat Instruction Manuals

Honeywell has been in business for over 100 years so they have a lot of Thermostat models! That is why we've provided a powerful search function so you can find the exact manual you need. In case you don't know the specific model number we have also included images of each thermostat below to guide you.

If your model is not listed, leave a comment below. Or, if you have a manual you would like to list, you can submit it here.

All imagery and manuals are copyright © Honeywell International or © Resideo Technologies. Please visit honeywellhome.com for the most up-to-date manuals and product information. You can read our DMCA policy here.

Model Image Model ID Description Document Updated Downloads
image
T10 Pro
THX321WFS2001W THX321WF2003W
 Smart Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 1
T9
RCHT9610WFW2004
 Smart Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 2
RLV4305A1000
 5-2-Day Programmable Line Voltage Thermostat 2020 User Manual
Document(s) Updated: 2020
image 3
PRO 3000 Series
TH3110D1008 TH3210D1004
 Non-Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 4
T4 Pro
TH4110U2005 TH4210U2002
 Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 5
The Round
RCH9310WF5003 TH8732WF
 Smart Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 7
T1 Pro
TH1110D TH1010D
 Non-Programmable thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 8
The Round
T8775A T8775C
 Non-Programmable Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 10
RTH9585WF
 WiFi Smart Thermostat 2019 User Manual
Document(s) Updated: 2019
image 11
RTH111 Series
RTH111B1042
 Digital Non-Programmable Thermostat – Low Voltage 2019 User Manual
Document(s) Updated: 2019
image 12
RTH2300 / RTH221 Series
RTH221B1039
 1-Week Programmable Thermostat 2020 User Manual
Document(s) Updated: 2020
image 13
9000 Series
TH9320WF5003
 Color Touchscreen Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 15
VisionPRO 8000
TH8321WF
 WiFi Programmable Thermostat 2017 User Manual Installation Manual
Document(s) Updated: 2017
image 16
FocusPRO 6000 Series
TH6320R TH6000
 Programmable Wireless Thermostat 2013 User Manual
Document(s) Updated: 2013
image 17
T6 Pro Hydronic
TH6100AF
 Programmable Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 18
T6 Pro Smart
TH6220WF
 Smart Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 15
VisionPRO 8000
TH8110R1008 TH8320R1003 TH8321R1001
 Multistage Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 17
T6 Pro
TH6320U2008 TH6220U2000 TH6210U2001
 Programmable Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 18
T6 Pro Z-Wave
TH6320ZW2003
 Programmable Thermostat 2020 User Manual
Document(s) Updated: 2020
image 12
RTH2300 / RTH221 Series
RTH2300B1038
 5-2 Day Programmable Thermostat 2020 User Manual
Document(s) Updated: 2020
image 16
RTH6500WF Smart Series
RTH6580WF
 WiFi 7-Day Programmable Thermostat 2020 User Manual
Document(s) Updated: 2020
image 20
The Round
CT87N1001
 Non-Programmable Thermostat 2019 User Manual
Document(s) Updated: 2019
image 21
T410A T410B
 Baseboard Thermostat 2002 User Manual Installation Manual
Document(s) Updated: 2002
image 22
D6 Pro
DC6000WF1001
 WiFi Ductless Controller 2019 User Manual
Document(s) Updated: 2019
image 23
RTH8500 Wi-Fi Series
RTH8580WF
 Smart Wi-Fi Programmable Thermostat 2015 User Manual
Document(s) Updated: 2015
image 24
Lyric T5+
RCHT8612WF
 Smart Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 25
PRO 1000 Series
TH1100DV
 Non-Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 26
CT30/CT33 Series
CT30A1005
 Heat Only Non-Programmable Thermostat 2005 User Manual
Document(s) Updated: 2005
image 27
RTH3100C
 Digital Non-Programmable Heat-Cool Pump Thermostat 2016 User Manual Installation Manual
Document(s) Updated: 2016
image 28
RTH6360 Series
RTH6350/RTH6450 RET93E/RET95E
 5-2 Day Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 13
RTH9580 Series
 Smart Colour Touchscreen Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 29
RTH7400, RTH7500 Series
RTH7560E1001
 T5 7-Day Programmable Thermostat 2019 Installation Manual
Document(s) Updated: 2019
image 30
PRO 1000 Series
TH1100DH1004
 Horizontal Non-Programmable Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 31
PRO 2000 Series
TH2000DV TH1000DV
 Vertical Thermostat 2013 User Manual Installation Manual
Document(s) Updated: 2013
image 32
PRO 4000 Series
TH4210D TH4110D
 Programmable Thermostat 2013 User Manual Installation Manual
Document(s) Updated: 2013
image 33
PRO 2000
TH2110DH
 Horizontal Programmable Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 12
RTH2510/ RTH2410 Series
RTH2410B RTH2410B1019/E1
Programmable Thermostat Low Voltage 2019 User Manual
Document(s) Updated: 2019
image 32
Pro TH4110B
TH4110B1033
 Programmable Thermostat 2005 User Manual Installation Manual
Document(s) Updated: 2005
image 34
T7351
 Commercial Programmable Thermostat 2010 Installation Manual
Document(s) Updated: 2010
image 35
FocusPRO 5000 Series
TH5000 TH5320
 Non-Programmable Digital Thermostat 2009 User Manual
Document(s) Updated: 2009
image 23
VisionPRO 8000
TH8320WF TH8000
 Wi-Fi Programmable Thermostat 2012 User Manual Installation Manual
Document(s) Updated: 2012
image 36
TH110-DP-P
 Programmable Thermostat 2010 User Manual
Document(s) Updated: 2010
image 37
TL8230A TL8230A1003
 7-Day Programmable Thermostat 2013 User Manual
Document(s) Updated: 2013
image 38
T834 Series
T8034N T834N T834L
 Non-Programmable Thermostat 2006 User Manual
Document(s) Updated: 2006
image 39
RTH230B
 5-2 Day Programmable Thermostat 2011 User Manual
Document(s) Updated: 2011
image 40
VisionPRO TH8000 Series
TH8321U1097
 Touch-screen Programmable Thermostat 2011 User Manual
Document(s) Updated: 2011
image 41
CT2800
 Programmable Thermostat 2003 Installation Manual
Document(s) Updated: 2003
image 42
CT1500 CT1501 CT1502 CT1503
 Timer Thermostat 1994 User Manual
Document(s) Updated: 1994
image 43
CT50A CT51A CT53A
 Non-Programmable Thermostat 2005 User Manual
Document(s) Updated: 2005
image 44
CMR707
CMR707A1049
 Programmable Thermostat 2006 User Manual
Document(s) Updated: 2006
image 44
CM721 CM727
 Programmable Thermostat 2009 User Manual
Document(s) Updated: 2009
image 45
CM900 Series
CM921 CM927
 Wireless Programmable Room Thermostat 2006 User Manual Installation Manual
Document(s) Updated: 2006
image 46
CM901
 Programmable Room Thermostat 2005 User Manual
Document(s) Updated: 2005
image 47
CT8602
 Programmable Thermostat 2001 User Manual
Document(s) Updated: 2001
image 48
Y87RF
Y87RF2024
 Single Zone Wireless Thermostat 2014 User Manual Installation Manual
Document(s) Updated: 2014
image 49
Lyric T6R
Y6H910RW4022 T6H700RW4011 Y6H910WF1011
 7 Day Wireless Programmable Thermostat 2016 User Manual Installation Manual
Document(s) Updated: 2016
image 49
Lyric T6HW
Y6H920RW4026
 7 day Wireless Programmable Thermostat with Hot Water Control 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 50
T3R
T3, T3R, T3M
 Wireless Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
image 51
T4R
Y4H910RF4003
 7-day Programmable Room Thermostat 2016 User Manual Installation Manual
Document(s) Updated: 2016
image 51
T4
T4H110A1021
 Wired 7-day Programmable Room Thermostat 2016 User Manual Installation Manual
Document(s) Updated: 2016
image 52
ST9100A
ST9100C
 1 Day Single Channel Time Switch 2007 User Manual Installation Manual
Document(s) Updated: 2007
image 52
ST9100S
 1 Day Service Time Switch 2007 User Manual Installation Manual
Document(s) Updated: 2007
image 53
ST9400C
 7 Day 2 Channel Programmer 2007 User Manual Installation Manual
Document(s) Updated: 2007
image 53
ST9500C
 7 Day 2 Zone Programmer 2007 User Manual Installation Manual
Document(s) Updated: 2007
image 54
DT92E
 Wireless Digital Thermostat 2009 User Manual Installation Manual
Document(s) Updated: 2009
image 54
DT90E
 Wired Digital Thermostat 2009 User Manual Installation Manual
Document(s) Updated: 2009
t6360
T6360
T4360
 Mains Voltage Room Thermostat 2010 User Manual Installation Manual
Document(s) Updated: 2010
image 47
CT3611
 Programmable Thermostat 2001 User Manual
Document(s) Updated: 2001
image 47
CT3500 / CT3595
 Programmable Thermostat 2001 User Manual
Document(s) Updated: 2001
image 55
H8908B / H8908C
 Humidistat & Dehumidistat 1999 User Manual
Document(s) Updated: 1999
image 28
RCT8102A
 Programmable Thermostat 2010 User Manual
Document(s) Updated: 2010
image 56
VisionPRO IAQ
 Touch-screen Programmable Thermostat 2008 Installation Manual
Document(s) Updated: 2008
image 57
CT3200
 Programmable Thermostat 2003 User Manual
Document(s) Updated: 2003
image 58
RLV4300
 5-2 Programmable Thermostat 2019 User Manual
Document(s) Updated: 2019
image 39
RCT8100
 Programmable Thermostat 2019 User Manual
Document(s) Updated: 2019
image 59
R7426A
R7426B R7426C
 Temperature Controller 2007 User Manual
Document(s) Updated: 2007
image 60
T8190A
191108AJ Q682
 Heating or Cooling Thermostat 1994 User Manual
Document(s) Updated: 1994
image 61
RTHL3550
 Non-programmable Thermostat 2011 Installation Manual
Document(s) Updated: 2011
image 28
RTH7500D
 Programmable Thermostat 2004 User Manual
Document(s) Updated: 2004
image 62
RTH7600
 Touchscreen Programmable Thermostat 2008 User Manual
Document(s) Updated: 2008
image 63
T4098A
T4098B
 Electric Heat Thermostats 1996 User Manual
Document(s) Updated: 1996
image 64
T4039 Series
T4039A,B,D-M,S,V
 Line Voltage Cooling and Heating-Cooling Thermostats 1992 User Manual
Document(s) Updated: 1992
T8624D
T8624D Series
T8624D2004
 Chronotherm® IV Deluxe Programmable Thermostat 1997 User Manual Installation Manual
Document(s) Updated: 1997
image e1604588063846
T8112D Series
T8112D1005
 Programmable Thermostat 1996 User Manual
Document(s) Updated: 1996
image 1
T8000 Series
T8000C, T8001C, T8011R, T8024C
 Programmable Thermostat 2000 User Manual
Document(s) Updated: 2000
Pasted
PRO 2000 Series
TH2110DV:, TH2210DV:
 Programmable Thermostat 2020 User Manual Installation Manual
Document(s) Updated: 2020
image 16
FocusPro Wi-Fi Series
TH6320WF
 Wi-Fi Programmable Thermostat 2013 User Manual
Document(s) Updated: 2013
TL8100A1008
TL8100
TL8100A1008
 7 Day Hydronic Programmable Thermostat 2018 User Manual Installation Manual
Document(s) Updated: 2018
Pasted 2
Lyric™ T5 Wi-Fi
RCHT8610WF2006
 Programmable Thermostat 2016 User Manual
Document(s) Updated: 2016
CT410B1017
T410A, T410B
CT410B1017
 Line Voltage Baseboard Thermostat 2019 User Manual
Document(s) Updated: 2019
RLV3120A1005
RLV3120
RLV3120A1005
 Non-programmable Thermostat 2019 User Manual
Document(s) Updated: 2019
RLV210A1002
RLV210A1002
 Line Voltage Baseboard Thermostat 2019 User Manual
Document(s) Updated: 2019
RLV3150A1012
RLV3150A1012
 Electronic Thermostat Canada 2019 User Manual
Document(s) Updated: 2019
1000
PRO 1000 / TH2000DV/TH1000DV Series
TH1110DV1009
 Non-Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
CT53K1006E1
CT50 Series
CT53K1006/E1
 Millivolt Thermostat 2019 User Manual
Document(s) Updated: 2019
RET97E5D
RET97E5D
 Wi-Fi Thermostat 2019 User Manual
Document(s) Updated: 2019
e1
E1 PRO
TH1110E1000
 Non-Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
750
CT30 Series
CT33A1009
 750 Millivolt Economy Thermostat 2019 User Manual
Document(s) Updated: 2019
TH401
TH401
 Line Voltage Electric Thermostat 2019 User Manual
Document(s) Updated: 2019
CT230 GA CT230 GB
CT230-GA / CT230-GB
 Line Voltage Electric Thermostat 2019 User Manual
Document(s) Updated: 2019
TH2210DH1000
PRO 2000
TH1000E1/ TH1000DH/ TH2000DH
 Programmable Thermostat 2019 User Manual Installation Manual
Document(s) Updated: 2019
T5 2022
T5
RTH8800WF
 Smart Thermostat 2022 Installation Manual
Document(s) Updated: 2022
RTH9600WF
RTH9600WF
 Smart Color Thermostat 2022 User Manual
Document(s) Updated: 2022
image 18
RTH8560D
 Programmable Thermostat 2019 Installation Manual
Document(s) Updated: 2019
AC Thermostat 1
D6
Smart Mini-Split / AC Thermostat 2018 User Manual Installation Manual
Document(s) Updated: 2018

To obtain the most up to date version of Honeywell thermostat manuals we encourage you to visit the official Honeywell resource center. The purpose of our resource is to provide manuals which may no longer be published on the official Honeywell website.

Honeywell Thermostat Instructions

Honeywell has been operating for over 100 years and in that time has produced many hundreds if not thousands of thermostat models. This makes finding the correct user guide or owner manual tricky as you may inadvertently pick up the wrong one.

It’s important to correctly identify your thermostat model by finding the model number and then cross-checking that against the manual you find online. In many cases, Honeywell produces a product series that can include a number of variations of the same thermostat. Choosing the incorrect manual may mean you have the wrong Honeywell thermostat instructions for wiring or configuring your device.

In addition, Honeywell produces thermostats for various different markets. The manuals listed in this resource are primarily from the US and UK market however these are also sold internationally into Canada and the EU, and further afield.

Types of Honeywell Thermostat Manuals

There are a variety of manual types available online that may be useful to you.

User Manual / Owner’s Guide

These are the most common type of manual available and contain instructions on how to program and use your thermostat for heating or cooling. Sometimes these manuals also include installation and wiring instructions where there is not a separate booklet for reference. 

Installation Instructions 

A lot of Honeywell thermostats require professional installation by a registered electrical contractor. A number of models contain detailed instructions for installation which contain wiring diagrams along with different variations of installation.

Quick Start Guides

As manuals can run to tens or hundreds of pages, a number of models come with quick-start guides which are visual documents providing users with the high levels features of the device. Great for those who don’t have the time to wade into the full technical detail of the device.

Product Specification

Some products also come with spec sheets that highlight the specific technical specifications of the thermostat. This can be useful if you need to understand the granular details of the device installed however is generally not that useful for the end user.

Types of Honeywell Thermostats

Honeywell has produced a multitude of thermostat types over the last 50 years. These devices can generally be grouped into the following categories.

  • Time Switch – Simple device that provides the ability to turn on/off or boost your heating. Some models provide the ability to program 1 Day or 7 Days
  • Non-Programmable Thermostats / Temperature Controller – Ability to specify a specific temperature along with the ability to turn on/off or boost. Some models support cooling as well as heating where you have the ability to control your fan. 
  • Programmable Thermostats (5-2 Day / 7 Day) – Models that provide the ability to granularly set the temperature for different days via the button and screen.
  • Digital Thermostats – Thermostats that incorporate an LCD screen to provide information on the settings selected.
  • Touchscreen Thermostats – Thermostat programmers with a touchscreen interface as opposed to buttons built into the cover plate.
  • Wired Thermostats – Traditional non-programmable and programmable thermostats must be wired directly to the heating or cooling source. These devices may still have a battery backup.
  • Wireless Thermostats – Modern-day thermostats are wireless and can be installed anywhere in the home, as long as there is connectivity to the hub. This makes installation a lot easier.
  • Smart Thermostats – Cutting-edge thermostats that are integrated with cloud services for smart home automation and voice control via Alexa.
  • Line Voltage Thermostats – A type of thermostat that is specifically designed to handle electric heat sources such as baseboard heaters, underfloor heaters, or mains voltage room thermostats.
  • Heat Only or Cool Only Thermostats – Some thermostats will only be connected directly to a heating or cooling system.
  • Humidification, Dehumidification, or Ventilation Thermostats
  • Zonal Thermostats – A home HVAC system typically consists of multiple zones whereby there is a central programmer connected to the heating and cooling sources, with individual room thermostats feeding back temperature data.
  • Room Thermostat – A simple room thermostat that allows the setting of temperature for that room which is connected to the main system to control heating and cooling.

Troubleshooting a faulty Honeywell thermostat

It’s difficult to provide troubleshooting advice for a Honeywell thermostat without knowing the specific model number. Each model has its own quirks, so I recommend you review the user manual for the specific model above to help resolve your problem. 

The types of troubleshooting queries that are answered in user manuals include …

  • Display is blank
  • Screen is difficult to read
  • Heating or cooling system not responding despite the thermostat being on
  • “Cool On” or “Heat On” is flashing
  • Temperature settings not changing
  • Temperature changes occurring at the wrong time
  • Error Codes or Error Symbols showing on display
  • Flashing Icons on display indicating a fault
  • How to cater for daylight savings
  • How to recover from a power failure
  • Battery replacement
  • Disagreement between thermostat setting and thermostat reading
  • Reset to factory settings

What’s included in a Honeywell thermostat user manual?

While each user guide differs based on the type of thermostat and type of HVAC system, you can expect the following to be described in detail in your user manual.

  • Description of the interface – For non-digital devices, this simply informs the user of what each button and switch does on the thermostat plate. For digital thermostats, there is typically a lot more detail on how to manipulate the controls to access the various menus and features within the display. For touchscreen thermostats, each interface is element is described and detailed.
  • Key Controls – How to turn on / turn off the HVAC system or boost
  • Programming a Schedule – How to set a schedule to program when the heating or cooling systems should come on. This can either be a simple time schedule or based on the ambient temperatures read by room thermostats.
  • Changing batteries – The procedure to follow to change the batteries should be outlined, in cases where the specific model contains a replaceable battery or battery backup.
  • Installation instructions – Some owner’s manuals contain detailed installation instructions which include a wiring diagram and guide along with the procedure to follow to successfully set up the device. As thermostat installation typically involves electrical work, there are usually warnings in place for the process to be carried out by a competent professional. Instructions to Disconnect the power supply before installation are usually included!
  • Setup and configuration – Once physical installation is complete the device can be set up and configured for the first time. 
  • Troubleshooting – Most guides typically provide a troubleshooting table where the most common problems are listed along with the solution for each.
  • Multi-lingual – Most user manuals can be quite long as the instructions are repeated a number of times in various languages to cater to a wide customer base.

Conclusion

We hope you find the above resource useful in solving your HVAC issues. If you can't find the manual you need, feel free to leave a comment below and we'll try our very best to source it for you.

Sources

https://www.honeywellhome.com/us/en/products/air/thermostats
https://heatingcontrols.honeywellhome.com/

The post Honeywell Thermostat Instruction Manuals (All Models) appeared first on Smart Home Perfected.

]]> https://www.smarthomeperfected.com/honeywell-thermostat-manuals/feed/ 37 5258 2024 Essential Guide: Effortless Honeywell Thermostat Battery Replacement – All Models https://www.smarthomeperfected.com/honeywell-thermostat-battery/ https://www.smarthomeperfected.com/honeywell-thermostat-battery/#comments Tue, 30 Apr 2024 12:21:30 +0000 https://smarthomeperfected.com/?p=3612---3df0c29a-7b9e-40c4-b6cd-597117abec9e When the “Replace Battery/Batt Low” sign starts to flash, you need to change your Honeywell Thermostat Battery. This article will guide you through the Honeywell Thermostat battery replacement process for various different models.

The post 2024 Essential Guide: Effortless Honeywell Thermostat Battery Replacement – All Models appeared first on Smart Home Perfected.

]]> Honeywell provides an extensive variety of thermostats, ranging from the straightforward 1000 series all the way up to the top-tier T10s. However, due to this broad selection, it might sometimes be difficult to precisely determine the battery replacement instructions for a specific Honeywell thermostat model. While the process of replacing the battery is generally consistent across different models, it's essential to remember that there might be slight differences occasionally.

General Instructions

Honeywell thermostats typically consist of a base plate and a cover plate, which is attached to the wall. Generally speaking, to change the battery, you turn off power to your thermostat, remove the cover plate and swap out the old batteries.

It's important to note that not all Honeywell thermostats require batteries – but if yours has an LED display, it most likely does.

Like any battery-operated device, you'll need to change the batteries periodically to ensure optimal performance.

Most Honeywell thermostats only require a battery change once a year. When the “Battery/Batt Low” indicator appears, you'll have 60 days to replace the batteries before the device ceases to function properly.

Safety Precautions & Equipment Needed

At Smart Home Perfected we always advise readers not to undertake any work they are not competent in performing and if in any doubt, it is best to seek the assistance of a professional.

Before replacing the batteries in your Honeywell thermostat, I recommended you take the necessary precautions to ensure you do it safely.

Familiarize yourself with the required battery type (usually AA or AAA alkaline batteries) and the correct number needed for your specific model.

It's crucial to match the battery polarity with the markings on the compartment to avoid causing damage to your thermostat.

I've compiled a helpful list of popular Honeywell thermostat manuals to guide you in identifying whether your device requires batteries and the appropriate kind to use.

Replacing batteries in a thermostat that features a non-sliding compartment is easy. Even though thermostat wiring is generally 24 volts (in the US), I recommend starting by turning off the power supply to the thermostat to prevent any potential electrical hazards.

To access the battery compartment, gently pull the cover plate away from the bottom, wiggling it if necessary, until it detaches from the base plate.

In some instances, it may be necessary to remove a small screw at the base before separation. 

Always exercise caution while removing the cover plate to avoid damaging any pins or clips.

Finding the Model Number

Generally speaking, the model number of your thermostat is either referenced on the front of the device, is accessible through the digital interface, or is printed on a label at the back. In the model-specific instruction below, I’ve included images and diagrams to help you identify the right model.

T10 Pro & T9

The T10 Pro and T9 thermostats from Honeywell don't require battery replacements, as they use the C (standard) wire to draw power from the HVAC transformer, operating with a 24-volt supply.

However, their wireless indoor sensors rely on AAA alkaline batteries.

Keep an eye on the thermostat screen for any battery warnings, which usually appear about 60 days before the batteries are completely drained.

If the sensor status light starts flashing red, this means the battery charge is critically low, with only 2-3 weeks of use remaining. During regular operation, the status light remains switched off.

To replace the batteries in your indoor sensor, follow these simple steps:

  1. Remove the sensor cover.
  2. Insert two new AAA alkaline batteries.
  3. Upon installation, the status light will flash green if the batteries are in good condition, and red if they need immediate replacement.
  4. After replacing the cover, the sensor will automatically reconnect with the thermostat within a few seconds.

Remember to use new, high-quality AAA alkaline batteries to ensure optimal performance and prolonged sensor life for your T10 Pro or T9 thermostat.

T6 Z-Wave

The T6 Z-Wave thermostat offers flexibility in its power source, allowing it to function with either battery power (using 3 x AA batteries) or 24 VAC power through a “C” or common wire.

The choice is optional: batteries can provide backup power when the thermostat is wired to operate on 24 VAC, though not necessary altogether.

All non-battery-operated Z-Wave devices within the network will serve as repeaters, regardless of the manufacturer, ensuring a reliable connection throughout the network.

To maintain optimal functionality, it is vital to promptly replace the thermostat batteries when the low-battery alert appears—typically around two months before full depletion.

You can change the battery of a Honeywell T6 Z-Wave thermostat by:

  1. Locate the battery compartment.
  2. Open the compartment using a screwdriver or latch release tool.
  3. Remove the old batteries and dispose of them properly.
  4. Insert fresh batteries of the same type, observing the correct polarity.
  5. Close the battery compartment securely.
  6. Test the thermostat to ensure it powers on and displays the correct settings.
  7. Reconfigure the Z-Wave network if necessary, following the manufacturer's instructions.

Below is a diagram of how to change the batteries on this model

honeywell thermostat battery
image 61

T4 Pro

The T4 Pro offers smart technology that helps you save on energy costs. Its clear and accurate display ensures optimal temperature control, and its compatibility with most heating and cooling systems makes it a versatile choice for any home. 

You can wire your T4 Pro to run on AC power. Alternatively, you can power it using 2 AA batteries. To replace these batteries, follow these steps:

  1. Locate and remove the battery compartment cover.
  2. Take out the old batteries.
  3. Insert the new batteries, ensuring correct polarity.
  4. Reinsert the battery compartment cover.
  5. Verify the proper functioning of the thermostat.

Below is a diagram of how to change the batteries on this model

image 76
image 63

8000 Series

A complete touchscreen controller and Wi-Fi compatibility are two new feature upgrades in the 8000 series. In a nutshell, the 8000 series underwent a complete revamp, which sets it apart from its predecessors. Using the new features, you can adjust the humidity, ventilation, program schedule, and other things, just by using your smartphone.

This series is also compatible with Honeywell’s “My Total Connect Comfort” web portal. It also has an app that allows its users to control their thermostats.

This series covers models TH8110U, TH8320U & TH8321U.

Make sure your 8000 series thermostat is always operational with these steps:

  1. Turn off your thermostat.
  2. Hold the cover plate and gently pull it to detach from the base plate.
  3. Replace all three AAA batteries, aligning with the battery compartment markings.
  4. Reattach the cover plate to the base plate.
  5. Power on your thermostat and enjoy renewed device functionality.

Below is a diagram of how to change the batteries on this model

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6000 Series

This series comes with a sliding battery slot, as well as a few other upgrades to the control system compared to previous models.

Along with hardware upgrades, this series also introduced some software upgrades such as the Program Schedule feature. Using this, you can program different settings for different weekdays and weekends. This feature has four pre-set settings which can greatly help when it comes to saving on energy costs.

This series covers models TH6110D, TH6220D & TH6320U.

To change the battery of a Honeywell 6000 series thermostat, do the following:

  1. Switch off your thermostat.
  2. Press and pull the cover plate to remove the battery holder at the top-right corner.
  3. Take out the battery compartment.
  4. Replace both AA batteries.
  5. Attach the cover plate back onto the base plate, sliding it firmly.
  6. You can power your thermostat back on.

Below is a diagram of how to change the batteries on this model

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5000 Series

This series introduced the sliding battery compartment slot. As a result, to change the battery, you no longer need to separate the cover plate from the base plate.

This series also includes the Auto Changeover feature. On many occasions, you might need to use both heating and air conditioning on the same day. The Auto Changeover feature makes this possible. It automatically selects between heating or cooling after assessing the indoor temperature.

This series covers models Focus Pro, TH5110D, TH5320U & TH5220D.

Follow these steps to change the battery of your Honeywell 5000 series thermostat:

  1. Turn off your thermostat.
  2. Locate the battery holder at the top-right corner of the cover plate, then press and gently pull to remove it.
  3. Remove the battery compartment.
  4. Replace the two AA batteries with fresh ones, ensuring the polarity matches the markings on the compartment.
  5. Place the cover plate back onto the base plate.
  6. Turn your thermostat back on, now running on fresh batteries.

Below is a diagram of how to change the batteries on this model

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4000 Series

Just like its predecessors, this series also features a built-in compressor protection system. You can set your desired temperature, control the fan, and adjust the emergency heating system using the control system.

This series comes with an upgraded LED display that will notify you when the battery is running low and will display the current indoor temperature, the current day & time, and the current system status, among other useful metrics.

The 4000 series covers models TH4210D & TH4110D.

Below is a walkthrough of the simple process of replacing the batteries in your 4000 Series thermostat, ensuring your home stays comfortable and energy-efficient:

  1. Switch off your thermostat and isolate the circuit as a precaution.
  2. Place your fingers at the bottom of the thermostat and pull to remove the cover plate.
  3. Replace both AA batteries with new ones.
  4. Make sure the battery polarity matches the markings on the battery compartment.
  5. Set the cover plate back in its place by sliding it onto the base plate until it's firmly fixed.

Below is a diagram of how to change the batteries on this model

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3000 Series

A built-in compressor protection feature sets this series apart from others. This feature protects the compressors in your air conditioner and heat pump. Moreover, it hosts a control system and a display screen.

The 3000 series uses batteries to withstand fluctuations in the AC power supply. Nonetheless, it might need a battery replacement once a year. You will receive an alert 2 months before complete battery depletion.

Upgrading your Honeywell Thermostat 3000 series’ battery ensures smooth operation all year round. This series includes model numbers TH3110D1008 and TH3210D1004.

Here is a concise step-by-step guide to make the process hassle-free: 

  1. Turn off the thermostat, and isolate the circuit for safety.
  2. Gently pull the bottom of the thermostat to separate the cover plate from the base plate.
  3. Remove the old batteries and insert new ones, ensuring correct polarity alignment.
  4. Slide the cover plate back onto the base plate.
  5. Turn on the thermostat and circuit, and enjoy uninterrupted climate control in your home.

Below is a diagram of how to change the batteries on this model

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RTH2300 / RTH221 Series

The Honeywell RTH2300/RTH221 Series is a user-friendly programmable thermostat designed to enhance your home's comfort and energy efficiency. 

With a sleek design and intuitive interface, this series lets you easily program your desired temperature settings and schedule throughout the day. It offers precise temperature control, ensuring a comfortable environment while helping to reduce energy consumption.

This series covers models RTH2300B, RTH2300, RTH221

You can change the battery of these thermostats by following these steps:

  1. Open the battery compartment on the back.
  2. Remove the old batteries.
  3. Insert the new batteries, ensuring correct polarity.
  4. Close the battery compartment.
  5. Verify the proper functioning of the thermostat.

Below is a diagram of how to change the batteries on this model

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1000 & 2000 Series

Honeywell 1000 and 2000 series thermostats are popular among those who are on a budget. These two series are widely used in multi-family households and apartment complexes.

Each model from these two series comes with an LED display for easier control. Whether you intend on using them with your air conditioner or your gas furnace, they’ve got you covered.

The 1000 series includes models TH1100DV, TH1110DV, TH1210DV, and the 2000 series includes models TH2110DV, and TH2210DV. Here’s how to change the battery of each of them:

  1. Carefully remove the cover plate from the base plate.
  2. Swap out the old AAA batteries with fresh ones.
  3. Align the battery polarity according to the compartment markings.
  4. Replace the cover plate, securing it onto the base plate.
  5. Switch the thermostat and circuit back on to complete the process.

Below is a diagram of how to change the batteries on this model

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Common Honeywell Thermostat Battery Questions

What are the best batteries to use?

Some Honeywell thermostats use alkaline AA batteries, while others use alkaline AAA ones. 

If you are not sure which ones your thermostat requires, check the old batteries already installed on the device. That might give you an idea, or you can also check the user manual for your thermostat model.

How to clear low battery from display after Honeywell Thermostat battery replacement?

Soon after you replace the old batteries, the “Low Battery” sign will automatically disappear. If not, you may need to power down and power up the device to reset it. This may need to be done at the circuit breaker.

Honeywell thermostats store your settings in their memory. So even when you dismantle them to insert new batteries, they will remember your settings once they start running again.

The thermostat still won't work after replacing the batteries, what should I do?

It can happen for a couple of reasons. Check if the battery polarity matches the markings on the battery compartment of the thermostat. 

If it matches and your thermostat still doesn’t work, try using the batteries in another device to check if they are draining or not.

If the thermostat still doesn’t work, you should contact the Honeywell support team.

What happens when the batteries go dead?

After the “Low Battery” sign starts to flash, you will typically have 60 days to replace the batteries. Your thermostat might also display a blank screen to save energy.

If you still fail to change the batteries, after 60 days they will be depleted of energy and your thermostat will stop functioning.

What is the Honeywell thermostat battery size?

Not all Honeywell thermostats require batteries. But some do, usually the ones with an LED display.

All the thermostats that require batteries need 2 or more alkaline AA or AAA types.

Why is my Honeywell thermostat showing as battery low?

This is how your Honeywell thermostat notifies you about its low battery life. The “Battery Low” message is displayed on the LED screen 60 days before complete depletion.

Conclusion

And that's it – you're now equipped to replace the Honeywell thermostat battery in a variety of models, from the classic 1000 and 2000 series to the advanced T10 Pro.

Sources

https://www.honeywellhome.com

The post 2024 Essential Guide: Effortless Honeywell Thermostat Battery Replacement – All Models appeared first on Smart Home Perfected.

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