Honeywell Pro 4000 Manual: A Comprehensive Guide
This guide details the Honeywell Pro 4000 thermostat, covering installation, operation, troubleshooting, and advanced features for optimal home comfort control.
The Honeywell Pro 4000 is a programmable thermostat designed for efficient home climate control. This series, including models like the TH4110D, caters to various systems – from single-stage heating and cooling to heat pump configurations.
This thermostat isn’t just about setting temperatures; it’s about optimizing energy usage and enhancing comfort. Its user-friendly interface allows for easy scheduling and adjustments, potentially lowering energy bills.
Whether you’re a homeowner tackling a DIY project or a technician seeking a reliable tool, understanding the Pro 4000’s capabilities is key. This manual provides a comprehensive overview, from initial setup and wiring to advanced features like smart home integration and remote access. It aims to empower users to fully utilize this thermostat’s potential.
Understanding Pro 4000 Series Models
The Honeywell Pro 4000 series encompasses several models tailored to different HVAC systems. The TH4110D is specifically designed for conventional 1 Heat/1 Cool setups, offering basic programmable functionality. Other models support heat pump systems, providing more complex control options.
Key distinctions lie in compatibility and features. Some models require a “C” wire for consistent power, while others can operate without it, utilizing power-stealing techniques. Understanding your system’s wiring is crucial when selecting a model.
The series also varies in display types and advanced capabilities, such as smart home integration. Referencing the model number – often found on the thermostat itself – ensures you’re accessing the correct documentation and support resources. Proper model identification is vital for successful installation and operation.
Key Features and Benefits
The Honeywell Pro 4000 thermostat boasts several features enhancing home comfort and energy efficiency. Programmable schedules allow customized temperature settings for different times of day, reducing energy waste. Its user-friendly interface simplifies operation, even for those unfamiliar with smart thermostats.
Benefits include precise temperature control, leading to consistent comfort and lower energy bills. Compatibility with various HVAC systems offers flexibility. Some models support remote access via smartphone apps, enabling control from anywhere.
Furthermore, the Pro 4000’s adaptability to smart home ecosystems provides seamless integration. Its reliable performance and straightforward installation contribute to a hassle-free experience, making it a valuable upgrade for any home.

Installation Guide
This section provides step-by-step instructions for safely and correctly installing your Honeywell Pro 4000 thermostat, ensuring optimal performance and functionality.
Required Tools and Materials
Before beginning the installation process for your Honeywell Pro 4000 thermostat, gather all necessary tools and materials to ensure a smooth and efficient setup. You will need a screwdriver – both Phillips and flathead – for various screw types encountered during wiring and mounting. A wire stripper is crucial for safely preparing the thermostat wires.

Additionally, a level will guarantee the thermostat is mounted straight for aesthetic appeal and accurate readings. A drill may be required depending on your wall type and existing mounting setup. Don’t forget a pencil for marking screw locations. Finally, ensure you have the Honeywell thermostat itself, the wall plate, mounting screws, wire labels, and potentially a J-box adapter if needed for your specific installation scenario.
Safety Precautions Before Installation
Prioritize safety during the Honeywell Pro 4000 thermostat installation. Always disconnect power to your HVAC system at the breaker box before commencing any wiring work. This prevents electrical shock and potential damage to your equipment. Verify the power is off using a non-contact voltage tester.
Exercise caution when handling wires, avoiding any frayed or damaged insulation. If you are uncomfortable working with electrical wiring, consult a qualified HVAC technician. Read and understand all installation instructions thoroughly before starting. Keep children and pets away from the work area. Proper grounding is essential; ensure all connections are secure. Following these precautions will ensure a safe and successful installation process.
Wiring Diagrams for Different Systems
Proper wiring is crucial for the Honeywell Pro 4000’s functionality. The TH4110D model, designed for 1 Heat/1 Cool systems, requires specific terminal connections. Heat pump systems necessitate a different wiring configuration, often involving reversing valves and auxiliary heat.
Refer to the detailed wiring diagrams included in the installation manual for your specific system type. Common terminals include Rh, Rc, W, Y, G, and C. The ‘C’ wire, providing 24V common power, is often essential for reliable operation. Incorrect wiring can damage the thermostat or your HVAC equipment. If unsure, consult a qualified HVAC professional to ensure correct and safe connections.
1 Heat/1 Cool Systems (TH4110D)
The TH4110D model is specifically designed for conventional 1 Heat/1 Cool heating and cooling systems. Wiring typically involves connecting Rh (heating power), Rc (cooling power), W (heat), Y (cool), and G (fan) terminals. A ‘C’ wire, providing common power, is highly recommended for consistent operation, though some installations may function without it.
Ensure the power is OFF during wiring. Carefully match the wires from your existing thermostat to the corresponding terminals on the Honeywell Pro 4000. Incorrect connections can lead to system malfunction. Consult the detailed wiring diagram in the installation guide for a visual reference.
Heat Pump Systems
Heat pump installations with the Honeywell Pro 4000 require specific wiring configurations due to their unique heating and cooling functionalities. Common terminals include Rh, Rc, Y, G, and O/B. The O/B terminal controls the reversing valve, switching between heating and cooling modes – verify if your system uses ‘O’ (energize to cool) or ‘B’ (energize to heat).
A ‘C’ wire is almost always necessary for reliable operation with heat pumps. Carefully review the wiring diagram provided in the manual, as heat pump wiring can be more complex than conventional systems. Incorrect wiring can damage your heat pump or thermostat.
Mounting the Wall Plate
Before mounting, ensure power to your HVAC system is completely shut off at the breaker. The Honeywell Pro 4000 wall plate provides mounting holes for secure attachment. Use a level to ensure the plate is straight for a professional appearance.
Mark the screw locations with a pencil, then drill pilot holes if necessary, especially for drywall. Use the provided screws to attach the wall plate firmly to the wall. A J-box adapter may be required for some installations, ensuring a flush and stable mount. Verify the plate is securely fastened before proceeding with wiring connections.
Connecting the Wiring

Carefully connect the wires to the corresponding terminals on the wall plate, referencing the wiring diagram for your specific system (1 Heat/1 Cool or Heat Pump). Common terminals include R, C, W, Y, and G. Ensure each wire is securely inserted into its terminal – loose connections can cause malfunctions.
Double-check your wiring against the diagram before proceeding. The ‘C’ wire (common wire) is often crucial for powering the thermostat. If you lack a ‘C’ wire, a compatible power extender kit might be necessary. Once all wires are connected, gently tuck them into the wall cavity, avoiding any pinching or strain.

Thermostat Operation
The Honeywell Pro 4000 offers intuitive control of your home’s temperature, featuring a user-friendly interface for scheduling and adjusting settings easily.
Powering On and Initial Setup
Upon initial power-up, the Honeywell Pro 4000 thermostat will guide you through a straightforward setup process. The display will illuminate, prompting you to select your preferred language and date/time format.
Next, the thermostat will ask you to identify your heating and cooling system type – options include conventional systems (1 Heat/1 Cool), heat pumps, and others. Accurate selection is crucial for proper operation.
Following system identification, you’ll be prompted to configure network settings if you intend to utilize smart home integration or remote access features. This involves connecting to your home’s Wi-Fi network. Finally, review and confirm your settings before completing the initial setup.
Navigating the User Interface
The Honeywell Pro 4000 features an intuitive touchscreen interface designed for ease of use. The main screen displays the current temperature, setpoint, and operating mode (Heat, Cool, Auto, Off).
Swipe left or right to access different menus, including scheduling, system settings, and fan control. Tapping the temperature display allows for quick adjustments to your desired setpoint.
A dedicated menu button, often represented by three horizontal lines, reveals advanced options. Within these options, you can customize display settings, configure alerts, and manage user profiles. Familiarizing yourself with these navigation elements will unlock the full potential of your thermostat.
Programming Schedules
The Honeywell Pro 4000 allows for customized heating and cooling schedules to maximize comfort and energy savings. Access the scheduling menu through the main interface. You can create distinct schedules for weekdays and weekends, or tailor each day individually.
Within each schedule, define multiple periods with specific temperature setpoints. For example, set a lower temperature while you’re away at work and a warmer temperature for when you return home.
The thermostat supports temporary overrides, allowing you to adjust the temperature without disrupting your programmed schedule. Experiment with different settings to find the optimal balance between comfort and efficiency.
Setting Daily Schedules
To set a daily schedule on your Honeywell Pro 4000, navigate to the programming menu and select “Daily Schedule.” You’ll define time periods and corresponding temperature settings for each day of the week. Typically, you can program up to four periods per day – Wake, Leave, Return, and Sleep.
For each period, input the start time and desired temperature. Consider your daily routine when setting these times. For instance, set a cooler temperature during work hours and a warmer one for evenings.
Remember to save your changes after configuring each day’s schedule. Review your settings to ensure accuracy and optimal comfort.
Creating Weekly Schedules
Weekly schedules on the Honeywell Pro 4000 allow you to apply the same settings across multiple days, simplifying programming. Access the “Weekly Schedule” option within the programming menu. You can then copy a daily schedule to other days, or create a unique schedule for each day of the week.
This is useful if your weekday routine is consistent, but weekends differ. Adjust individual days as needed after copying the base schedule. Ensure all seven days have programmed settings to avoid unexpected temperature fluctuations.
Save your weekly schedule to activate it. Regularly review and adjust as your lifestyle changes.
Adjusting Temperature Settings
Adjusting temperature on your Honeywell Pro 4000 is straightforward. Use the up and down arrow buttons on the thermostat’s interface to modify the setpoint temperature. The current set temperature is prominently displayed on the screen. You can adjust both heating and cooling setpoints independently.
Temporary overrides allow for quick adjustments without altering the programmed schedule. Select “Hold” to maintain the new temperature until the next scheduled change, or until manually canceled. The thermostat remembers your last temperature setting.
Confirm your changes by pressing the “Save” or “Done” button, if prompted.

Troubleshooting Common Issues
This section addresses frequent Pro 4000 problems like power failures, inaccurate readings, and connectivity issues, offering solutions for a smoothly functioning thermostat.
Thermostat Not Powering On
If your Honeywell Pro 4000 thermostat fails to power on, begin by verifying the power source. Ensure the system’s breaker hasn’t tripped and that the thermostat is receiving 24VAC power. Check the wiring connections at both the thermostat and the heating/cooling system, confirming secure and correct placement – a loose wire is a common culprit.
Confirm the ‘C’ wire (common wire) is properly connected, as this is essential for consistent power. If a ‘C’ wire isn’t present, a ‘C’ wire adapter might be necessary. Inspect the batteries, if applicable, replacing them with fresh ones. A faulty transformer within the HVAC system could also be the issue, requiring professional diagnosis. Finally, double-check the thermostat’s mounting plate for any shorts or damage.
Incorrect Temperature Readings
When the Honeywell Pro 4000 displays inaccurate temperatures, several factors could be at play. First, ensure the thermostat isn’t directly exposed to sunlight, drafts, or heat-generating appliances, as these can skew readings. Verify the thermostat is level; an unlevel installation can affect accuracy. Check for obstructions blocking airflow around the unit.
Calibrate the thermostat through the settings menu, if available, to adjust the displayed temperature. Confirm the thermostat’s location isn’t influenced by poor insulation or exterior walls. If the problem persists, a faulty temperature sensor within the thermostat may require replacement. Consider professional HVAC inspection to rule out system-wide issues impacting temperature control.
Connectivity Problems
If your Honeywell Pro 4000 experiences connectivity issues, begin by verifying your home’s Wi-Fi network is functioning correctly. Ensure the thermostat is within range of the router and that the Wi-Fi password entered during setup is accurate. Restart both the thermostat and your router to refresh the connection;
Check for firmware updates within the thermostat’s settings; outdated firmware can cause connectivity problems. Confirm the Honeywell Home app is updated to the latest version on your smartphone or tablet. If issues persist, try resetting the thermostat’s network settings and re-establishing the connection. Contact Honeywell support if problems continue, as there may be server-side issues.

Advanced Features
Explore smart home integration, remote access via the Honeywell app, and personalized energy-saving tips to maximize your Pro 4000 thermostat’s capabilities.
Smart Home Integration
The Honeywell Pro 4000 seamlessly integrates with popular smart home platforms, enhancing your home automation experience. Compatibility extends to systems like Amazon Alexa and Google Assistant, allowing for voice control of your thermostat.
Imagine adjusting the temperature with a simple voice command! This integration provides convenient, hands-free operation. Furthermore, the thermostat can be incorporated into broader smart home routines, such as automatically adjusting the temperature when you leave or return home.
Connecting to these platforms unlocks a new level of convenience and control, streamlining your daily life and optimizing energy usage. Explore the possibilities of a truly connected home with the Pro 4000.
Remote Access and Control
The Honeywell Pro 4000 offers robust remote access and control capabilities through the Honeywell Home app, available for iOS and Android devices. This feature allows you to manage your home’s temperature from anywhere with an internet connection.
Whether you’re on vacation or simply away from home, you can adjust settings, view current temperatures, and manage schedules remotely. This provides peace of mind and ensures optimal comfort upon your return.
The app also provides alerts and notifications, keeping you informed of any system changes or potential issues. Enjoy complete control and convenience with the Pro 4000’s remote access features.
Energy Saving Tips

Maximize energy savings with your Honeywell Pro 4000 thermostat by utilizing its programmable features. Create customized schedules that align with your daily routines, reducing heating or cooling when the home is unoccupied.

Lowering the temperature a few degrees in winter and raising it slightly in summer can significantly reduce energy consumption. Take advantage of the geofencing feature, if available, to automatically adjust temperatures based on your location.
Regularly check and replace air filters to ensure optimal system efficiency. Consider using the thermostat’s learning capabilities to optimize schedules based on your preferences and usage patterns, further minimizing energy waste.

Resources and Support
Access the Honeywell website for detailed documentation, FAQs, and troubleshooting guides. Contact Honeywell support directly for personalized assistance with your Pro 4000.
Honeywell Website and Documentation
Honeywell’s official website serves as a central hub for all Pro 4000 related resources. You’ll find downloadable manuals, including the PRO TH4000 Series Installation Guide and the Programmable Thermostat Manual (69-1760EF-1).
These documents provide step-by-step instructions for installation, wiring diagrams for various systems (like 1 Heat/1 Cool – TH4110D, and Heat Pump systems), and detailed explanations of the user interface.
Furthermore, the site offers troubleshooting assistance for common issues like the thermostat not powering on or displaying incorrect temperatures. Explore the online documentation to maximize your Pro 4000 experience and understand its full capabilities, including smart home integration possibilities.
Contacting Honeywell Support
For direct assistance with your Honeywell Pro 4000 thermostat, reaching out to Honeywell Support is recommended. The provided documentation suggests contacting them directly for further guidance, especially during installation or if you encounter complex issues not addressed in the manual.
While specific contact details aren’t explicitly listed in the snippets, the Honeywell website (honeywell.com) is the primary point of contact; Look for a “Support” or “Contact Us” section to find phone numbers, email addresses, or live chat options.
Be prepared to have your model number (PRO 4000Série, PRO TH4000) readily available to expedite the support process. They can assist with troubleshooting, warranty information, and any specific questions regarding your thermostat’s functionality.
Frequently Asked Questions (FAQ)
Q: Where can I find the complete manual for my Honeywell Pro 4000? A: The Honeywell website (honeywell.com) is the best resource for downloadable manuals and documentation, including specific guides for different models like the TH4110D.
Q: What does “UWP Mounting System” refer to? A: It’s a mounting system used during installation, often requiring a J-box adapter for compatibility.
Q: Can I program different schedules for each day? A: Yes, the Pro 4000 allows for setting daily and weekly schedules to optimize comfort and energy savings. Refer to the programming section of the guide.
Q: What if my thermostat isn’t powering on? A: Check the wiring and power options, ensuring a stable power supply.
