Honeywell TH6110D1005 User Manual: A Comprehensive Guide
This manual details the Honeywell TH6110D1005, a programmable thermostat for residential systems, offering digital control and scheduling to optimize comfort and energy savings.
The Honeywell TH6110D1005 is a member of the FocusPRO 6000 Series of programmable thermostats, designed to provide efficient and convenient temperature control within your home. This digital thermostat is compatible with most standard heating and cooling systems, offering a user-friendly interface for setting and adjusting your desired comfort levels.
This thermostat allows for customized programming, enabling you to create a schedule that aligns with your daily routines. By utilizing programmable settings, you can potentially reduce energy consumption and lower heating/cooling expenses – savings of up to 33% are achievable with optimized pre-set schedules. The TH6110D1005 features a clear digital display, simplifying temperature adjustments and system mode selections.
This user manual serves as a comprehensive guide to understanding, installing, programming, and troubleshooting your Honeywell TH6110D1005 thermostat, ensuring optimal performance and long-term satisfaction.
Key Features of the FocusPRO 6000 Series

The Honeywell FocusPRO 6000 Series, including the TH6110D1005, boasts several key features designed for enhanced comfort and energy management. A prominent feature is its programmable schedule, allowing for four distinct time periods each day, customized for both weekdays and weekends. This granular control optimizes temperature settings based on occupancy and preferences.
The thermostat’s intuitive interface simplifies operation, while the digital display provides clear and concise information. Compatibility with most heating and cooling systems ensures broad applicability. Users benefit from potential energy savings, with pre-set schedules capable of reducing heating and cooling costs by as much as 33%.

Furthermore, the FocusPRO series offers reliable performance and ease of installation, making it a practical choice for homeowners seeking a smart and efficient climate control solution. It’s designed for user convenience and long-term energy efficiency.
Package Contents and Required Tools
Upon opening the Honeywell TH6110D1005 package, ensure all components are present. You should find the FocusPRO TH6110D programmable thermostat itself, with the wallplate already attached to the back. Included are two AA alkaline batteries to power the device, and essential mounting hardware – specifically, two wall anchors and two mounting screws.
Critically, the package also contains the operating manual, providing detailed instructions for installation and programming. For a successful installation, you’ll need additional tools. A screwdriver is essential for securing the wallplate and making wiring connections. Depending on your existing wiring, you may also require wire strippers and potentially a small level to ensure the thermostat is mounted straight.
Having these tools readily available will streamline the installation process and ensure a secure and functional setup.

Installation Guide

Proper installation of the Honeywell TH6110D1005 involves a pre-installation checklist, securely mounting the wallplate, and carefully establishing correct wiring connections for optimal performance.
Pre-Installation Checklist
Before beginning the installation of your Honeywell TH6110D1005 thermostat, a thorough pre-installation checklist is crucial for a smooth and successful setup. First, carefully unpack the package and verify that all components are present, including the thermostat itself (with the wallplate attached), two wall anchors, two mounting screws, two AA alkaline batteries, and this operating manual.
Next, ensure your heating and cooling system is compatible with the thermostat. Most 24V heating and cooling systems are suitable, but it’s wise to confirm. Turn off power to your HVAC system at the breaker to avoid electrical shock during wiring. Identify your existing wiring configuration – noting the wire colors and their corresponding terminals on your old thermostat. This information will be vital for correctly connecting the wires to the new Honeywell unit.
Finally, gather the necessary tools: a screwdriver, wire strippers, a level, and potentially a drill if new mounting holes are required. Having everything readily available will streamline the installation process and minimize delays. Review the wiring diagrams in this manual to familiarize yourself with the connections.
Mounting the Wallplate
With the power to your HVAC system safely turned off, proceed with mounting the wallplate. Carefully remove your old thermostat from the wall, disconnecting the wires as you go – remember to label each wire for easy re-connection. Position the Honeywell TH6110D1005 wallplate on the wall, ensuring it’s level using a spirit level.
Mark the locations for the mounting screws using a pencil. If necessary, drill pilot holes for the wall anchors, especially if mounting on drywall. Insert the wall anchors into the drilled holes; Align the wallplate with the marked locations and secure it to the wall using the provided mounting screws. Ensure the wallplate is firmly attached and doesn’t wobble.
Double-check that the wallplate is level before proceeding. A properly mounted wallplate is essential for accurate thermostat operation and a clean, professional appearance. Gently tug on the wallplate to confirm it’s securely fastened to the wall.
Wiring Connections
Before connecting any wires, ensure the power to your HVAC system is completely switched off at the breaker. Refer to the labeled wires from your previous thermostat and the wiring diagram included with the Honeywell TH6110D1005. Carefully insert each wire into the corresponding terminal on the wallplate.
Ensure each wire is securely fastened within its terminal – a loose connection can cause malfunctions. Common terminals include Rh, Rc, W, Y, G, and C. The ‘C’ wire, or common wire, is often required for consistent power. If you don’t have a ‘C’ wire, consult a qualified HVAC technician.
Double-check all connections against the wiring diagram before proceeding. Incorrect wiring can damage your thermostat or HVAC system. Once all wires are connected, gently tug on each wire to confirm it’s securely held in place. Proceed to attach the thermostat to the wallplate.

Programming the Thermostat
The Honeywell TH6110D1005 allows for customized temperature schedules, offering four periods daily with distinct settings for weekdays and weekends, optimizing comfort.
Understanding the Program Schedule
The Honeywell FocusPRO 6000 Series, including the TH6110D1005, utilizes a flexible program schedule to manage your home’s temperature efficiently. This thermostat allows you to define four distinct time periods each day: Wake, Leave, Return, and Sleep. Each period can be programmed with a specific temperature setting tailored to your comfort preferences and occupancy patterns.
Crucially, the schedule operates differently for weekdays and weekends, recognizing that your routine likely varies. You can create separate temperature settings for Monday through Friday and then a different schedule for Saturday and Sunday. This dual-schedule functionality maximizes energy savings by automatically adjusting temperatures when you’re away or asleep.
Honeywell recommends utilizing the pre-set settings as a starting point, as these have been designed to potentially reduce heating and cooling expenses by up to 33%. However, the true power lies in customizing the schedule to perfectly match your lifestyle, ensuring both comfort and cost-effectiveness. Understanding these periods and the weekday/weekend differentiation is key to unlocking the full potential of your thermostat.
Setting the Date and Time
Accurate date and time settings are fundamental for the proper functioning of your Honeywell TH6110D1005 thermostat’s programming features. Before establishing your desired temperature schedule, it’s essential to ensure the thermostat displays the correct current date and time. This ensures that the programmed time periods – Wake, Leave, Return, and Sleep – align with your daily routine.
The process for setting the date and time is typically accessed through the thermostat’s menu system. Navigate using the thermostat’s buttons to locate the “Date” and “Time” settings. Adjust these values accordingly, paying close attention to the month, day, year, hour, and minute.
Confirm your entries carefully, as incorrect settings will disrupt the programmed schedule. A correctly configured date and time are vital for the thermostat to automatically switch between temperature settings at the appropriate times, maximizing both comfort and energy efficiency. Refer to the full user manual for detailed, step-by-step instructions specific to your model.
Weekday/Weekend Programming
The Honeywell TH6110D1005 offers distinct programming options for weekdays and weekends, recognizing that typical schedules often differ. This feature allows for customized temperature settings tailored to your lifestyle, maximizing comfort and energy savings. You can establish separate temperature programs for Monday through Friday, and another for Saturday and Sunday.
This separation is crucial for optimizing energy use. For example, you might maintain lower temperatures during work/school hours on weekdays and allow for more comfortable temperatures when you are home. On weekends, the schedule can reflect a different pattern, perhaps maintaining consistent comfort throughout the day.
Programming each schedule involves setting the desired temperature for each of the four time periods: Wake, Leave, Return, and Sleep. Utilizing pre-set settings, as recommended, can potentially reduce heating/cooling expenses by up to 33%, demonstrating the value of customized programming.
Four Time Periods Per Day
The Honeywell TH6110D1005 thermostat allows for programming across four distinct time periods each day: Wake, Leave, Return, and Sleep. This granular control enables precise temperature adjustments to match your daily routine and optimize energy efficiency. Each period can be independently programmed with a specific temperature setting.
The ‘Wake’ period sets the temperature for when you typically rise, ensuring a comfortable start to your day. ‘Leave’ adjusts the temperature while you’re away, conserving energy. ‘Return’ sets the temperature for when you come home, providing comfort upon arrival. Finally, ‘Sleep’ establishes a cooler, more energy-efficient temperature for nighttime.
Utilizing these four periods effectively allows for significant energy savings without sacrificing comfort. The recommended pre-set settings, designed to balance comfort and efficiency, can reduce heating and cooling costs by as much as 33%.

Using the Thermostat
The Honeywell TH6110D1005 features a digital display for easy navigation, system mode selection, temporary holds, and battery replacement for consistent operation.
Display Overview and Navigation

The Honeywell TH6110D1005 thermostat boasts a clear, digital display providing essential information at a glance. The main screen typically shows the current room temperature, the set temperature, and the current time. Icons indicate the system mode – Heat, Cool, Auto, or Off – and whether the fan is set to Auto or On.
Navigating the thermostat’s menu is achieved through a combination of buttons located around the display. Typically, “Menu” accesses the main settings, while “Up” and “Down” arrows adjust temperatures and scroll through options. A “Select” or “Enter” button confirms choices. The display will guide you through each step, clearly labeling available options.

Understanding the icons is crucial for efficient use. A flame icon signifies heating, a snowflake indicates cooling, and an auto icon means the thermostat will switch between heating and cooling to maintain the set temperature. Familiarizing yourself with these visual cues simplifies operation and allows for quick adjustments to your comfort settings.
Temporary Temperature Hold
The Honeywell TH6110D1005 allows for temporary overrides of your programmed schedule using the “Hold” function. This is ideal for situations where you need to adjust the temperature for a short period without altering your long-term settings. To initiate a temporary hold, use the “Up” or “Down” buttons to set your desired temperature.
Then, select the “Hold” option, usually accessible through the menu. The thermostat will maintain this temperature until the next scheduled program change or until you manually cancel the hold. The display will indicate that a hold is active, often with a specific icon or message.
The duration of the hold can vary depending on the model, but it typically lasts until the next programmed time period. Canceling the hold returns the thermostat to its regularly scheduled program. This feature provides convenient, short-term temperature control without disrupting your energy-saving schedule.
System Mode Selection (Heat, Cool, Auto, Off)
The Honeywell TH6110D1005 offers four primary system modes: Heat, Cool, Auto, and Off. Selecting the appropriate mode ensures your HVAC system operates as intended. In “Heat” mode, the thermostat activates the heating system when the room temperature falls below the setpoint. “Cool” mode activates the cooling system when the temperature rises above the setpoint.
“Auto” mode intelligently switches between heating and cooling to maintain your desired temperature, ideal for fluctuating weather conditions. The thermostat determines whether to activate heating or cooling based on the setpoint and the current room temperature. Finally, “Off” mode disables both heating and cooling, allowing for manual control or system shutdown.
Mode selection is typically accessed through the thermostat’s menu, using the navigation buttons to cycle through the available options. The currently selected mode is clearly displayed on the screen, ensuring easy monitoring and adjustment.
Battery Replacement
The Honeywell TH6110D1005 thermostat utilizes AA alkaline batteries as a power source or as backup during power outages. Low battery indicators will appear on the display, signaling the need for replacement. It’s crucial to replace batteries promptly to maintain accurate temperature control and programmed settings.
To replace the batteries, locate the battery compartment, typically accessed by removing the thermostat faceplate. Carefully remove the old batteries and insert two new AA alkaline batteries, ensuring correct polarity (+ and -). Avoid mixing old and new batteries, or different battery types.
After battery replacement, the thermostat may require a brief reset or re-synchronization with the wallplate. Refer to the installation guide for specific instructions. Regularly checking and replacing batteries, ideally twice a year, ensures uninterrupted operation and prevents potential data loss.

Troubleshooting Common Issues
If your Honeywell TH6110D1005 thermostat isn’t functioning correctly, several common issues can be addressed. A blank display often indicates low batteries, requiring immediate replacement as detailed in the battery section. If the thermostat isn’t responding to changes, verify proper wiring connections, ensuring they match the system configuration.
Incorrect temperature readings might stem from thermostat placement – avoid direct sunlight or drafts. For heating or cooling not activating, confirm the system mode is set correctly (Heat, Cool, Auto, Off). If the programmed schedule isn’t running, double-check the date, time, and program settings.
Should problems persist, consult the full user manual or Honeywell’s support website for detailed troubleshooting steps and potential solutions. Resetting the thermostat to factory defaults can sometimes resolve complex issues, but will erase custom programming.