Troubleshooting

Display is blank

Check circuit breaker and reset if necessary.

Make sure power switch at heating & cooling system is on..

Make sure furnace door is closed securely.

If thermostat is battery powered, make sure fresh AA alkaline batteries are correctly installed..

Temperature settings do not change

Make sure heating and cooling temperatures are set to acceptable ranges:

Heat: 40° to 90°F (4° to 32°C).

Cool: 50° to 99°F (10° to 37°C).

Heating system does not respond (“HEATING” appears on screen)

Check for 24VAC at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the heating equipment to find the cause of the problem..

Check for 24VAC between the heat terminal (W) and the transformer common. If 24VAC is present, the thermostat is functional. Check the heating equipment to find the cause of the problem..

Check for loose or broken wires between the thermostat and the heating equipment..

Cooling system does not respond (“COOLING” appears on screen)

Check for 24VAC at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the cooling equipment to find the cause of the problem

Check for 24VAC between the cooling terminal (Y) and the transformer common. If 24VAC is present, the thermostat is functional. Check the cooling system to find the cause of the problem..

Check for loose or broken wires between the thermostat and the cooling equipment..

Fan does not turn on in a call for heat

Check System Setting 05 (Fan Control), to make sure the fan control is properly set to match the type of system (see page 6)..

Heat pump issues cool air in heat mode, or warm air in cool mode

Check wiring at the terminal block to confirm the reversing valve is connected to the proper terminal. O is active in cooling and B is active in heating.

Heat/cool both on at same time

Check SW1 (Equipment Type), to make sure it is set to match the installed heating/cooling equipment

(see page 5)..

Check to make sure heating and cooling wires are not shorted together..

Heating equipment is running in cool mode

Check SW1 (Equipment Type), to make sure it is set to match the installed heating/cooling equipment

(see page 5)..

“HEATING” is not displayed

Check Installer System Setting number 01 (Control Setup) is set correctly.

Change the System Mode to Heat, and set the temperature level above the current room temperature..

“COOLING” is not displayed

Check Installer System Setting number 01 (Control Setup) is set correctly.

Change the System Mode to Cool, and set the temperature level below the current room temperature..

Error Codes

If the thermostat enters an error mode, all outputs are turned off. The thermostat attempts to recover every 10 minutes. If the error does not clear, use the reset button. This will return all settings back to factory default.

Error code

Message

Error Description

01

“SENSOR ERROR”

Open temperature sensor circuit

 

 

02

Shorted temperature sensor circuit

 

 

 

 

04

“EEPROM ERROR”

Error in permanent memory

 

 

 

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Aprilaire 8600 installation instructions Troubleshooting, Error Codes, Error code Message Error Description

8600 specifications

The Aprilaire 8600 is a state-of-the-art smart thermostat designed to enhance indoor comfort while improving energy efficiency. As a product of Aprilaire, a leading name in indoor air quality solutions, the 8600 offers a plethora of features that can drastically improve home climate management.

One of the standout features of the Aprilaire 8600 is its user-friendly interface. The large, color touchscreen display is not only aesthetically pleasing but also intuitive, making it easy for users to navigate through settings. The thermostat supports customizable programming, enabling homeowners to set specific temperature schedules based on their lifestyle. This means you can lower heating or cooling during the day when the house is empty and warm it up just before you return home, maximizing energy savings.

Equipped with advanced technologies, the Aprilaire 8600 also incorporates Wi-Fi connectivity, allowing users to control their home’s climate remotely via a smartphone app. The ability to adjust settings from anywhere means you'll never have to return to a cold house again. Additionally, the thermostat features smart learning capabilities, gradually adapting to your heating and cooling habits for optimal comfort.

Another key characteristic of the Aprilaire 8600 is its advanced humidity control. Unlike standard thermostats, this model effectively manages humidity levels, helping to maintain a comfortable environment while preventing issues like mold growth and condensation. This feature is especially beneficial in regions with high humidity or during damp seasons.

The 8600 also includes an energy management system that provides real-time feedback on energy usage. This helps homeowners understand their energy consumption better and make informed decisions to cut down on waste. Moreover, the built-in alerts notify users of any maintenance needs, ensuring the HVAC system operates at peak efficiency throughout its lifecycle.

In conclusion, the Aprilaire 8600 is a powerful blend of advanced technology and user-oriented design. With features such as a high-resolution touchscreen, Wi-Fi connectivity, and exceptional humidity control, it stands out as a leader in smart thermostat technology. By integrating these functionalities, the Aprilaire 8600 not only boosts comfort but also promotes energy conservation, making it an invaluable tool for any modern home. Whether you prioritize comfort, efficiency, or smart home integration, the Aprilaire 8600 delivers on all fronts.