About Your New Thermostat
This operating manual provides comprehensive information for the Honeywell RTH2300/RTH221 Series Programmable Thermostat. Designed for reliable service and ease of use, this thermostat offers push-button climate control.
Key features include a backlit display (RTH2300), continuous display of ambient temperature, one-touch access to setpoint temperature, preset program settings, temporary and permanent schedule overrides, and built-in compressor protection.
Getting Started
Your new Honeywell thermostat is pre-programmed and ready for use. To ensure optimal performance, follow these initial setup steps:
- Set the current time and day.
- Select the desired system setting (Heat, Off, or Cool).
- Choose the fan setting (Auto or On).
- Review and adjust the program schedules for energy savings.
For detailed instructions on each step, please refer to the relevant sections within this manual.
Key Controls and Display
Familiarize yourself with the thermostat's controls and display screen:
- Set Button: Used to set time, day, and program schedules.
- Hold Button: Allows temporary override of the programmed temperature.
- Run Button: Resumes the programmed schedule.
- Temperature Adjustment: Use the up and down arrows to adjust the setpoint temperature.
- System Switch: Controls heating, cooling, or turns all systems off.
- Fan Switch: Determines if the fan runs continuously or only when the heating/cooling system is active.
The display screen shows the current time, day, program period (Wake, Leave, Return, Sleep), system status (Cool On, Heat On), and temperature readings. A low battery warning will also appear when needed.
Programming for Energy Savings
Maximize energy savings by setting personalized program schedules. The thermostat allows for four distinct time periods each day, with options for different settings on weekdays and weekends. The default settings are designed for energy efficiency, potentially reducing heating and cooling expenses significantly.
Refer to the manual for specific instructions on adjusting the times and temperatures for each program period (Wake, Leave, Return, Sleep) to suit your lifestyle and optimize energy conservation.
Important Safety Information
CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent potential compressor damage, do not operate the cooling system when the outdoor temperature is below 50°F (10°C).
Customer Assistance
For assistance with this Honeywell product, please visit yourhome.honeywell.com or contact Honeywell Customer Care toll-free at 1-800-468-1502.
