1. Introduction and Overview
This manual provides detailed instructions for the installation, operation, and maintenance of your Honeywell Home RLV4305A1000 5-2 Day Programmable Thermostat. This thermostat is designed to control electric heating systems such as baseboard heaters, convectors, radiant ceilings (2-wire), and fan-forced heaters. It offers precise temperature control and programmable scheduling to enhance comfort and energy efficiency.
The RLV4305A1000 allows for separate programming for weekdays and weekends, with four distinct program periods per day: Wake, Leave, Arrive, and Sleep. Its TRIAC switching technology ensures silent operation and minimizes temperature fluctuations.

Figure 1: Front view of the Honeywell Home RLV4305A1000 programmable thermostat, displaying the current time and temperature.
2. Product Features
- Digital 5-2 Day Programmable: Allows for distinct heating schedules for weekdays and weekends.
- High Accuracy: Provides precise temperature control with an accuracy of ± 0.27°F for baseboards and convectors.
- Silent Operation: Features TRIAC switching for 100% silent performance and stable temperature control.
- Four Program Periods: Includes Wake, Leave, Arrive, and Sleep settings for daily customization.
- Easy Installation: Designed with a 2-wire non-polarized connection for straightforward setup.
- Backlit Display: Ensures easy reading of temperature and time, even in low light conditions.
- Temporary Bypass: Allows for temperature override without altering the programmed schedule.
- Compatibility: Suitable for line volt heating systems (240V) including electric baseboards, convectors, and fan-forced heaters. Also ideal for radiant ceilings.
- Power Capacity: Maximum load of 3,500W at 240V (14.6 A resistive); Minimum load of 2 A resistive.
3. Setup and Installation
3.1 Safety Precautions
WARNING: ELECTRICAL SHOCK HAZARD. This thermostat is a line voltage control (120-240 Volts). Do not install it if you are not completely familiar with house wiring. If handled improperly, there is risk of electric shock hazard, which may cause serious injury or death. Always disconnect power at the main service panel before servicing the thermostat.
3.2 Wiring
The RLV4305A1000 uses a 2-wire non-polarized connection, simplifying the wiring process. Ensure all connections are secure and comply with local electrical codes. Refer to the detailed wiring diagrams provided inside the thermostat's front panel for specific instructions.
3.3 Mounting
Mount the thermostat on an interior wall, away from direct sunlight, drafts, or heat sources that could affect its temperature readings. Ensure it is installed at a height that allows for easy access and visibility.

Figure 2: The Honeywell Home RLV4305A1000 thermostat mounted on a wall in a living space, demonstrating its compact design.
4. Operation
The thermostat features a user-friendly interface with buttons for setting the time, day, and programming schedules. Instructions for basic operation are conveniently located inside the front panel of the unit.
4.1 Setting Time and Day
To set the current time and day, press the 'Day', 'Hour', and 'Min' buttons located on the right side of the thermostat's control panel. Adjust as needed until the correct time and day are displayed.
4.2 Editing Program Schedule
To customize your heating schedule, press the 'Pgm' button to enter program mode. Use the 'Hour' and 'Min' buttons, along with the up/down arrows, to adjust the start times and desired temperatures for each of the four daily periods (Wake, Leave, Arrive, Sleep) for both weekdays and weekends.
4.3 Erasing a Program Period
If you need to clear a specific program period, navigate to that period using the 'Pgm' button and then follow the instructions inside the front panel to erase it.
4.4 Modifying Advanced Settings
For advanced settings, press and hold the 'Pgm' button for 3 seconds. This will allow access to configurations such as temperature display format (°F/°C) or other system parameters. Refer to the internal guide for specific advanced setting options.
5. Maintenance
The Honeywell Home RLV4305A1000 thermostat requires minimal maintenance. Keep the unit clean by wiping it with a soft, damp cloth. Avoid using abrasive cleaners or solvents. Ensure that the vents on the thermostat are not obstructed to allow for accurate temperature sensing.
6. Troubleshooting
If you experience issues with your thermostat, consider the following basic troubleshooting steps:
- No Display/No Power: Verify that the circuit breaker supplying power to the heating system is on. Ensure all wiring connections are secure.
- Incorrect Temperature Reading: Ensure the thermostat is not exposed to direct sunlight, drafts, or other heat sources.
- Heating System Not Responding: Check that the thermostat is set to a heating mode and the desired temperature is above the ambient room temperature. Confirm that the heating elements are functioning correctly.
- Programming Issues: Refer to the instructions inside the front panel for guidance on setting and modifying schedules. If a program period is not working as expected, try erasing and re-entering it.
For wiring assistance or persistent issues, it is recommended to contact customer support or a qualified electrician.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | RLV4305A1000 5-2 Day Programmable Thermostat for Electric Baseboard Heaters |
| Product Dimensions | 1.31"D x 4.75"W x 4.88"H |
| Controller Type | Push Button |
| Special Features | Clock Display, Programmable, Temperature Display, Vacation Mode |
| Color | Whites |
| Specific Uses | Heater (Electric Baseboards, Convectors, Fan-forced Heaters, Radiant Ceilings) |
| Temperature Control Type | Heating |
| Connectivity Technology | Wired (2-wire) |
| Power Source | Electric |
| Item Weight | 0.75 Pounds (12 ounces) |
| Voltage | 240 Volts |
| Material | Plastic |
| Display Type | Digital, Backlit |
| Wattage | 3500 watts |
| UPC | 085267705783 |
8. Warranty and Support
8.1 Warranty Information
The Honeywell Home RLV4305A1000 thermostat comes with a 1-year limited warranty. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For technical assistance, wiring questions, or troubleshooting support, please contact Honeywell Home customer service. You can often find support resources and contact information on the official Honeywell Home website or by calling the support number provided with your product documentation. For wiring assistance, you may call 1-800-831-2823 before returning the thermostat to the store.