Error Codes; Thermostat Features; Specifications - Aprilaire 8820 Safety & Installation Instructions

Touch screen wi-fi automation thermostat with integrated indoor air quality solutions
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TROUBLESHOOTING
TROUBLESHOOTING WI-FI CONNECTION
The Wi-Fi connection status is communicated through the use of the radio strength indicator and the message center .
The table below describes the various statuses and the corresponding message and radio bar display .
Wi-Fi connection status
Radio status indicator
Normal Operation .
Wi-Fi signal strength is indicated
by the appropriate number of bars .
The thermostat Wi-Fi settings have not
The frame is displayed and the bars cycle
been entered . Refer to Wi-Fi Setup on
from 0 to 4 .
page 2 for instructions for entering the
Wi-Fi settings .
The thermostat cannot connect to the
The frame and all bars
Wi-Fi router . Verify that the router is
flash on and off .
functioning properly .
Indicates the thermostat was not
The display will alternate between displaying
configured properly when connecting to
the frame and all bars .
the router . Confirm there is no IP conflict
and repeat Wi-Fi setup . Note: If the
thermostat is configured to work with an
Aprilaire account this indicates that the
thermostat cannot connect to the Aprilaire
Cloud . Confirm that the internet connection
is working .
There is an internal error with the
The frame will flash on and off .
thermostat Wi-Fi radio . The thermostat will
continue to control the HVAC and indoor
air quality control equipment, but will not
be able to connect to Wi-Fi . Contact an
HVAC professional for repair .
Wi-Fi radio turned off . Refer to the
Not displayed .
Accessingg Wi-Fi Settings Menu in the
Owner's Manual for information about
turning the Wi-Fi radio on .

ERROR CODES

If the thermostat enters an error mode, all outputs are turned off . The thermostat attempts to recover every 10 minutes .
Error code
Message
01
"SENSOR ERROR"
02
03
"EEPROM ERROR"
06
"REMOTE SENSOR ERROR"
07
08
"SUPPORT MODULES LOST"
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Message Center
No corresponding message
Displays the SSID of the
thermostat . Note: The
SSID will be used to
identify the thermostat
when using a smart device
to connect the thermostat
to your Wi-Fi router .
WiFi Connection Lost
Internet Connection Lost
Radio Error
WiFi Turned Off
Error Description
Open temperature sensor circuit
Shorted temperature sensor circuit
Error in permanent memory
Open remote temperature sensor circuit
Shorted remote temperature sensor circuit
All support modules with controlling
temperature sensors are in error

THERMOSTAT FEATURES

• Remote access and control over Wi-Fi .
• Indoor air quality control .
– Humidification automatic or manual control .
– Dehumidification .
– Event-Based
air cleaning .
– Ventilation with temperature and humidity limits .
• Temperature control .
• Heat Blast
®
raises the room temperature 3°F to 5°F .
• Large touch screen with adjustable backlight –
constant backlight option available .
• Message center provides feedback and instructions .
• 7 day programmability .

SPECIFICATIONS

Temperature
Relative humidity
Operating voltage
Current
Outdoor & Remote temperature sensor
Room temperature measurement
Outdoor temperature measurement
Setpoint temperature range
Setpoint humidity range
• Displays room temperature, room humidity,
temperature setting, and outdoor temperature .
• Air filter, humidifier, dehumidifier, fresh air, and HVAC
service reminders .
• 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 .
• System test mode .
Environment
Operating: 32° to 120°F (0° to 48 .9°C)
Shipping: -30° to 150°F (-34 .4° to 65 .5°C)
Operating: 5% to 90% R .H . (non-condensing)
Electrical
24VAC (18 – 30VAC)
Maximum: 2 .5A (total), 1 .0A (single output)
Maximum surge current: 5A
Thermal
Maximum distance: 300 feet
Display range: 32° to 99°F (0° to 40°C)
Display range: -40° to 130°F (-40° to 55°C)
Heat: 40° to 90°F (4° to 32°C)
Cool: 50° to 99°F (10° to 37°C)
Humidification: 10% to 50% R .H .
Dehumidification: 40% to 90% R .H .
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