Honeywell RTH8500 Operating Manual

Honeywell RTH8500 Thermostat manual cover
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Honeywell RTH8500 Thermostat Specification

The Honeywell RTH8500 Thermostat is a sophisticated programmable thermostat designed to enhance energy efficiency and provide precise temperature control for residential and commercial environments. It features a large, backlit touchscreen display that ensures easy operation and clear visibility even in low-light conditions. The thermostat supports 7-day programming, allowing users to set customized schedules for each day of the week to optimize comfort and energy savings. Its intuitive interface facilitates straightforward programming and quick adjustments.

The RTH8500 is equipped with advanced temperature control capabilities, maintaining a consistent indoor climate by automatically adjusting heating and cooling based on the programmed schedules. It supports compatibility with a wide range of HVAC systems, including single-stage and multi-stage heating and cooling, heat pumps, and electric baseboard heating. The thermostat also features adaptive intelligent recovery, which learns how long it takes to reach the desired temperature and activates the system earlier to ensure comfort at the scheduled time.

Installation is simplified with the thermostat's straightforward wiring process, and it includes detailed instructions for seamless integration with existing HVAC systems. The RTH8500 supports battery operation, ensuring functionality during power outages, and features a filter change reminder to help maintain system efficiency. It also includes a vacation mode setting to maintain energy savings when the home is unoccupied for extended periods.

Overall, the Honeywell RTH8500 Thermostat combines user-friendly design with advanced features, making it an ideal choice for those seeking to improve climate control and energy efficiency in their home or office.

Honeywell RTH8500 Thermostat F.A.Q.

How do I program the schedule on the Honeywell RTH8500 thermostat?

To program the schedule, press the 'Menu' button, select 'Schedule', and follow the prompts to set wake, leave, return, and sleep times for each day of the week.

What should I do if my Honeywell RTH8500 thermostat is not turning on the heating system?

Check that the thermostat is set to 'Heat' mode. Ensure that the set temperature is higher than the current room temperature. Also, verify the wiring connections and check the circuit breaker.

How can I lock the screen to prevent unauthorized changes on my Honeywell RTH8500?

To lock the screen, go to 'Menu' > 'Preferences' > 'Screen Lock', and follow the instructions to set a lock code.

Why is my Honeywell RTH8500 thermostat displaying a low battery warning?

The low battery warning indicates that the thermostat's batteries are running low. Replace them with fresh AA alkaline batteries to ensure proper operation.

How do I reset the Honeywell RTH8500 thermostat to factory settings?

To reset the thermostat, press and hold the 'Menu' button for 5 seconds, select 'Reset', and confirm by selecting 'Yes'. Note that this will erase all custom settings.

Can I connect my Honeywell RTH8500 thermostat to Wi-Fi?

The Honeywell RTH8500 does not have Wi-Fi capability. It is a programmable thermostat that requires manual scheduling adjustments.

How do I switch between Celsius and Fahrenheit on the Honeywell RTH8500?

To switch temperature units, press 'Menu', go to 'Preferences', and select 'C/F'. Choose your desired unit and press 'Save'.

My Honeywell RTH8500 is not responding to touch inputs. What should I do?

Ensure that the screen is not locked. If it is not locked, try resetting the thermostat by removing the batteries and reinserting them. If the issue persists, contact Honeywell customer support.

How can I adjust the temperature swing on my Honeywell RTH8500?

The temperature swing can be adjusted in the 'Installer Setup' menu. Access it by pressing 'Menu', then 'Preferences', and look for the 'Temperature Swing' setting to adjust as needed.

What maintenance is required for the Honeywell RTH8500 thermostat?

Regular maintenance includes replacing the batteries annually or when low battery warnings appear, and cleaning the screen with a soft, lint-free cloth.