Thermostat Features

•Large touch screen with adjustable backlight.

•Message center provides feedback and instructions.

•7 day programmability or separately programmable weekday/weekend schedules.

•Thermostat can be removed from the wall for easy programming (batteries must be installed)..

•Front battery door access for fast, easy replacement.

•Displays room temperature, room humidity, temperature setting, and optional outdoor temperature.

•Air filter, humidifier, dehumidifier, and HVAC service indicators..

•Programmable fan control with fan circulation mode.

•Easy to use temperature control can override program schedule at any time..

•Progressive recovery ensures proper temperature at the start of a program event.

•Built in compressor protection prevents damage to your equipment..

•Battery back-up.

•System test mode.

•RS485 communications ready.

•Universal system compatibility.

•Configurable to control a humidifier or dehumidifier.

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.

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 09 (Fan Control), to make sure the fan control is properly set to match the type of system (see page 9)..

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 8)..

•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 8)..

“HEATING” is not displayed

•Check Installer System Setting number 05 (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 05 (Control Setup) is set correctly.

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

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Aprilaire 8800 installation instructions Thermostat Features, Troubleshooting
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8800 specifications

The Aprilaire 8800 series is an advanced, high-performance air management system designed for residential use, providing homeowners with superior indoor air quality (IAQ) and comfort. This innovative model stands out for its combination of reliable filtration, user-friendly operation, and cutting-edge technology aimed at ensuring a healthier living environment.

One of the main features of the Aprilaire 8800 is its advanced filtration system. Equipped with a high-efficiency particulate air (HEPA) filter, the device is capable of capturing 99.97% of airborne particles as small as 0.3 microns. This includes dust, pollen, pet dander, and even smoke, making it an essential addition for allergy sufferers or those in areas with high pollution levels. The filter has a long lifespan, generally lasting up to a year, which reduces the hassle of frequent replacements and maintenance.

The Aprilaire 8800 is also designed to control humidity levels effectively. Maintaining optimal humidity levels is crucial for comfort and health, as excessive moisture can lead to mold growth and dust mites, while too little humidity can cause dry skin and respiratory issues. This product includes a built-in humidistat that helps monitor and adjust the humidity levels accordingly.

In terms of operation, the Aprilaire 8800 features an intuitive digital control interface. Homeowners can easily set their desired temperature and humidity levels, while the system automates adjustments to maintain these settings. Additionally, the unit is designed for quiet operation, ensuring that it does not intrude on the comfort of daily life.

The technology utilized in the Aprilaire 8800 series contributes to its efficiency and effectiveness. It is designed for compatibility with most HVAC systems, making it a versatile choice for varying home environments. The system also includes multiple fan speed settings to increase air circulation without compromising energy efficiency.

Overall, the Aprilaire 8800 is an excellent choice for those seeking enhanced air quality and comfort in their homes. With its robust filtration capabilities, humidity control features, and user-friendly interface, it stands out as a reliable option for improving indoor air quality. By investing in an Aprilaire 8800, homeowners can enjoy cleaner, healthier air while also protecting their living spaces from the adverse effects of poor air quality.
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