Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Honeywell 6575B1000 Digital Fan Coil Thermostat. Please read this manual thoroughly before attempting to install or operate your thermostat to ensure proper function and safety.
Setup and Installation
Installation of the Honeywell 6575B1000 Digital Fan Coil Thermostat should ideally be performed by a qualified technician. Incorrect wiring can lead to damage to the thermostat or the HVAC system. Ensure power to the HVAC system is turned off at the circuit breaker before beginning installation.

Front view of the Honeywell 6575B1000 Digital Fan Coil Thermostat, showing the display, control buttons for Heat/Cool/Off and Fan, temperature adjustment arrows, and exposed wiring for installation.
Wiring: Refer to the wiring diagram provided with your thermostat for specific connections. Note that wiring configurations may vary between different models, even within the same series. Always cross-reference the diagram with your specific unit.
Installer Setup: After physical installation, access the 'Installer Setup' menu to configure the thermostat for your specific HVAC system (e.g., 2-pipe or 4-pipe system, presence of pipe sensors). Incorrect settings in this menu can prevent proper operation.
Operating Instructions
The Honeywell 6575B1000 thermostat features an intuitive interface for controlling your heating and cooling.
Mode Selection (Heat/Cool/Off)
To change the operating mode, press the Heat/Cool/Off button located at the bottom left of the thermostat. Each press cycles through the available modes: Heat, Cool, and Off. The selected mode will be displayed on the screen.
Fan Speed Control
To adjust the fan speed, press the Fan button located at the bottom right. This button cycles through different fan settings: Low, Medium, High, and Auto. In 'Auto' mode, the fan operates only when the heating or cooling system is actively running to maintain the set temperature.
Temperature Adjustment
Use the Up (▲) and Down (▼) arrow buttons on the right side of the thermostat to set your desired room temperature. The current room temperature is displayed prominently, while the set temperature appears in the upper right corner of the display.
Video demonstrating the basic operation of a Honeywell thermostat, including how to switch between heating, cooling, and off modes, adjust fan speed, and set the desired temperature.
Maintenance
Your Honeywell 6575B1000 thermostat requires minimal maintenance. Keep the thermostat clean by wiping it with a soft, damp cloth. Avoid using abrasive cleaners or solvents. Ensure the vents on the thermostat are not obstructed to allow for accurate temperature sensing.
If your model uses batteries for power, replace them annually or when the low battery indicator appears on the display. Refer to your specific model's battery compartment for instructions on replacement.
Troubleshooting
If you encounter issues with your thermostat, consider the following common troubleshooting steps:
- Thermostat not turning on: Check the power supply to your HVAC system at the circuit breaker. Ensure all wiring connections are secure.
- System not heating/cooling to set temperature: Verify that the thermostat is set to the correct mode (Heat or Cool). Check the 'Installer Setup' settings to ensure they match your HVAC system configuration.
- Fan not operating correctly: Ensure the fan setting is not on 'Off' or 'Auto' if you desire continuous operation. Check for any obstructions to the fan unit.
- Inaccurate temperature readings: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor.
For persistent issues, it is recommended to consult a qualified HVAC technician.
Specifications
| Brand | Honeywell |
| Model Number | 6575B1000 |
| Product Dimensions | 30"D x 8"W x 6"H |
| Controller Type | Push Button |
| Special Feature | Auto Changeover, 3 speed fan |
| Specific Uses For Product | Air Conditioner, Furnace |
| Temperature Control Type | Digital |
| Power Source | Battery Powered |
| Voltage | 24 Volts |
| Display Type | Digital |
| Mounting Type | Wall Mount |
| Color | White |
| Item Weight | 0.9 Pounds |
Warranty & Support
According to product information, this Honeywell 6575B1000 Digital Fan Coil Thermostat does not come with a manufacturer's warranty. For any technical assistance, installation queries, or operational support, please contact Honeywell customer service directly or visit their official website for resources and contact information.