What to do if the cooling system does not respond on my Aprilaire 8476W Thermostat?
If your Aprilaire Thermostat's cooling system isn't responding, first check the circuit breaker and reset it if needed. Also, ensure the power switch at the heating and cooling system is turned on and that the furnace door is securely closed.
Why is 'COOLING' not displayed on my Aprilaire 8476W?
To fix this, check System Setting #03 (Reversing Valve) on your Aprilaire Thermostat to ensure it is correctly configured for your system. You can also change the System Mode to Cool and set the temperature lower than the current room temperature.
How to clear Wi-Fi settings on Aprilaire 8476W?
To clear the previous Wi-Fi settings on your Aprilaire Thermostat, change the setting for 'WiFi Disconnect and Clear Settings' to 'Yes' and then press the button three times. 'DONE' will be displayed.
How to turn off Wi-Fi on Aprilaire Thermostat?
To turn off the Wi-Fi radio on your Aprilaire Thermostat, change the setting for 'Turn WiFi Radio On/Off' to 'Off' and then press the button. 'DONE' will be displayed.
How to turn on Wi-Fi on Aprilaire 8476W?
To turn the Wi-Fi radio back on for your Aprilaire Thermostat, change the setting for 'Turn WiFi Radio On/Off' to 'On' and then press the button. 'DONE' will be displayed.
What to do if the fan does not turn on in a call for heat on Aprilaire Thermostat?
To fix the issue, check System Setting #07 (Fan Control) on your Aprilaire Thermostat to ensure the fan control is correctly configured to match your system type.
How to unregister Aprilaire 8476W from account?
To unregister your Aprilaire Thermostat from an existing account, change the setting for 'Unregister the Thermostat' to 'Yes' and then press the button twice. 'DONE' will be displayed to confirm the action.
Detailed explanation of the thermostat's buttons, indicators, and screen elements.
Instructions for connecting the thermostat to Wi-Fi and using the Aprilaire web/mobile apps.
Explanation of the four daily schedule periods: WAKE, LEAVE, RETURN, SLEEP.
Instructions for modifying the start times and temperatures for each schedule period.
Details on temporary and permanent holds, Away, and Heat Blast features.
Steps to enter the Wi-Fi settings menu to modify various network configurations.
Understanding Wi-Fi connection status indicators and their meanings.
Detailed explanation of the thermostat's buttons, indicators, and screen elements.
Instructions for connecting the thermostat to Wi-Fi and using the Aprilaire web/mobile apps.
Explanation of the four daily schedule periods: WAKE, LEAVE, RETURN, SLEEP.
Instructions for modifying the start times and temperatures for each schedule period.
Details on temporary and permanent holds, Away, and Heat Blast features.
Steps to enter the Wi-Fi settings menu to modify various network configurations.
Understanding Wi-Fi connection status indicators and their meanings.
The Aprilaire Model 8476W Thermostat is a sophisticated device designed to manage your home's heating, cooling, and air cleaning systems with advanced features and remote accessibility. It integrates Wi-Fi connectivity and Event-Based™ Air Cleaning, offering users precise control over their indoor environment and enhanced air quality.
The primary function of the Aprilaire 8476W Thermostat is to regulate your home's indoor temperature by controlling heating and cooling equipment. It supports various system modes including OFF, HEAT, EM-HEAT (Emergency Heat), COOL, and AUTO. In AUTO mode, the thermostat intelligently switches between heating and cooling based on the indoor temperature to maintain a comfortable environment. For heating, it can control a standard heating system or an emergency/auxiliary heat pump. For cooling, it manages the cooling system.
Beyond temperature control, a key feature of this thermostat is its Event-Based™ Air Cleaning capability. This function allows users to optimize air purification based on specific needs or events. The thermostat can be set to run the air cleaner continuously (ON-24/7) for maximum purification, or in AUTO mode, where air cleaning occurs only during fan operation for heating and cooling. A CIRC-30/HR setting ensures the air cleaner runs for a minimum of 30 minutes every hour, maximizing air cleaning while minimizing energy consumption. For specific situations, an EVENT-3HR option runs the air cleaner continuously for three hours, useful after activities like vacuuming. An ALLERGY-24HR setting provides continuous air cleaning for 24 hours during periods of high seasonal allergies or poor outdoor air quality.
The thermostat also incorporates a "Progressive Recovery" feature. This intelligent function allows the thermostat to activate heating or cooling equipment prior to a scheduled event, ensuring that the desired temperature is reached precisely at the start of that event. For example, if your "Wake" time is 6 AM with a target temperature of 70°F, the heat will turn on before 6 AM to achieve 70°F by the time you wake up.
The Aprilaire 8476W features a large, clear, backlit display that makes it easy to read information even in the dark. The display shows the current indoor temperature, the temperature setting, the current time, and optionally, the outdoor temperature. It also provides indicators for equipment status, such as heating or cooling activity, emergency heat, and system faults.
Temperature adjustment is straightforward: users can press the UP or DOWN buttons to change the current setting. In AUTO mode, the MODE button allows switching between HEAT and COOL settings.
The thermostat offers 7-day programmability, allowing users to create custom schedules for different times of the day and days of the week. The daily schedule is divided into four periods: WAKE, LEAVE, RETURN, and SLEEP. Each period can have its own start time and desired temperature settings for both heating and cooling, as well as a clean air/fan setting. The default schedule can be easily modified through the program setting mode.
Program schedule overrides provide flexibility. A temporary program override allows users to adjust the temperature for the current programmed time period, maintaining the new setting until the next scheduled event. A permanent hold can be activated to maintain a specific temperature indefinitely until the hold is manually cancelled.
Remote access and control are central to the 8476W's design, enabled by its Wi-Fi connectivity. After connecting the thermostat to a Wi-Fi network and registering it to an Aprilaire account, users can control and monitor their thermostat from anywhere using the Aprilaire web and mobile apps. This includes adjusting temperature, changing system modes, and managing air cleaning settings.
The mobile app also introduces additional features like "Away" and "Heat Blast®". The "Away" feature, when enabled, allows the thermostat to be set to predefined setpoints (e.g., higher cooling, lower heating) with a single tap in the app, saving energy when no one is home. The "Heat Blast®" feature, available in the app when the thermostat is in Heat or Emergency Heat mode, can temporarily raise the room temperature by 3°F to 5°F for quick comfort.
The Aprilaire 8476W includes service indicators for air filter and humidifier maintenance, reminding users when it's time to perform these tasks. These service reminder messages can be reset by pressing and holding specific buttons on the thermostat for three seconds.
For Wi-Fi maintenance and troubleshooting, the thermostat provides a dedicated Wi-Fi settings menu. Users can access this menu to disconnect the thermostat from the router and clear Wi-Fi settings, effectively resetting it to provisioning mode for connection to a new Wi-Fi router. The Wi-Fi radio can also be turned on or off, with settings maintained even when the radio is off.
The thermostat also allows users to unregister it from an Aprilaire account, which is useful if the device needs to be registered to a new account (e.g., when a home with the thermostat is sold).
Troubleshooting Wi-Fi connection issues is aided by a radio strength indicator on the display, which shows the Wi-Fi signal strength through a series of bars. Different display patterns indicate various connection statuses, such as normal operation, settings not entered, inability to connect to the router, inability to connect to the internet, internal Wi-Fi radio errors, or the Wi-Fi radio being turned off. This visual feedback helps users diagnose and resolve connectivity problems.
The thermostat's time and date are automatically updated periodically once connected to the cloud, and it also automatically adjusts for daylight savings, eliminating the need for manual adjustments.
General| Display | Color touchscreen |
|---|---|
| Connectivity | Wi-Fi |
| Humidity Control | Yes |
| Dehumidification Control | Yes |
| Ventilation Control | Yes |
| Scheduling | 7-day programmable |
| Temperature Range | 40°F to 99°F |
| Type | Programmable |
| Compatibility | HVAC systems |
| Mobile App | Aprilaire |
| Voice Control | Amazon Alexa, Google Assistant |
| Power Source | 24VAC |
| Warranty | 5-Year Limited |
| Stages | Up to 2 stages heating and cooling |
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