What to do if my Aprilaire 8476 Thermostat display is blank?
If the display on your Aprilaire Thermostat is blank, try the following: * Check the circuit breaker and reset it if necessary. * Ensure the power switch at the heating & cooling system is turned on. * Confirm that the furnace door is securely closed. * If your thermostat is battery powered, make sure that fresh AA alkaline batteries are correctly installed.
What to do if the cooling system doesn't respond on my Aprilaire Thermostat?
If your cooling system is not responding and “COOLING” appears on the screen of your Aprilaire Thermostat, consider the following checks: * Verify that SW1 (Equipment Type) is correctly set to match your installed heating/cooling equipment. * Ensure that the heating and cooling wires are not shorted together. * Check for loose or broken wires between the thermostat and the cooling equipment. * Check for 24 VAC between the cooling terminal (Y) and the transformer common. If 24 VAC is present, the thermostat is functional. Check the cooling system to find the cause of the problem. * Check for 24 VAC 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.
What to do if the heating system doesn't respond on my Aprilaire 8476 Thermostat?
If your heating system is not responding and “HEATING” appears on the screen of your Aprilaire Thermostat, consider the following checks: * Verify that SW1 (Equipment Type) is correctly set to match your installed heating/cooling equipment. * Ensure that the heating and cooling wires are not shorted together. * Check for loose or broken wires between the thermostat and the heating equipment. * Check for 24 VAC between the heat terminal (W) and the transformer common. If 24 VAC is present, the thermostat is functional. Check the heating equipment to find the cause of the problem. * Check for 24 VAC 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.
Why temperature settings do not change on my Aprilaire Thermostat?
If you're unable to change the temperature settings on your Aprilaire Thermostat, here are a few things to examine: * Confirm that your heating and cooling temperatures are set within the acceptable ranges: Heat: 45° to 90°F (7° to 32°C), Cool: 50° to 99°F (10° to 37°C). * Check for loose or broken wires between the thermostat and the heating equipment. * Check for 24 VAC between the heat terminal (W) and the transformer common. If 24 VAC is present, the thermostat is functional. Check the heating equipment to find the cause of the problem. * Check for 24 VAC 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.
Key features of the thermostat, including Event-Based Air Cleaning and display characteristics.
Detailed identification of the thermostat's buttons, screen sections, and indicators.
How to choose between OFF, HEAT, EM-HEAT, COOL, and AUTO operating modes.
Instructions for adjusting the desired heating or cooling temperature setting.
Configure the air cleaning feature for continuous, timed, or fan-operation based modes.
Procedures for clearing maintenance or filter change reminders from the display.
Guide for installing backup batteries and using the reset button for factory defaults.
Steps to correctly set the current time and day on the thermostat interface.
Explanation of the default WAKE, LEAVE, RETURN, and SLEEP schedule periods and their purpose.
How the thermostat anticipates and reaches scheduled temperatures ahead of the event start time.
Detailed steps for modifying daily and weekend program schedule times and temperatures.
How to temporarily or permanently override the thermostat's programmed temperature settings.
Details of the manufacturer's limited warranty coverage for the thermostat unit.
Instructions on how to register the product with the manufacturer for warranty purposes.
The Aprilaire Model 8476 Thermostat with Event-Based™ Air Cleaning is a sophisticated control device designed to manage your home's heating, cooling, and air quality systems efficiently. This owner's manual provides comprehensive operating instructions and warranty information, ensuring users can maximize the thermostat's capabilities.
The primary function of the Aprilaire 8476 thermostat is to regulate your home's indoor temperature and manage air cleaning operations. 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. The Event-Based™ Air Cleaning feature is a key differentiator, allowing users to control air purification based on specific needs or events, rather than just continuous operation. This system is designed to work with heat pumps that have auxiliary heat, providing precise control over different heating stages.
The thermostat boasts a user-friendly interface with a large, clear, backlit display that is easy to read, even in low-light conditions. The display shows essential information such as the current room temperature, the set temperature, and optionally, the outdoor temperature.
The Aprilaire 8476 thermostat is designed with ease of maintenance in mind, incorporating features that simplify upkeep and ensure long-term performance.
General| Display | Color touch screen |
|---|---|
| Connectivity | Wi-Fi |
| Programmable | Yes |
| Humidity Control | Yes |
| Product Type | Smart Thermostat |
| Compatibility | Compatible with most HVAC systems |
| Mobile App | Yes (Aprilaire App) |
| Programmability | 7-day programmable |
| Stages | 2 Heat / 2 Cool |
| Smart Home Compatibility | Works with Amazon Alexa and Google Assistant |
| Features | Remote Access |
| Mounting | Wall mounted |
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