Aprilaire Understanding Error Codes and Specifications for Optimal Thermostat Performance

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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

 

 

 

 

03

“RH SENSOR ERROR”

Invalid response from the RH sensor

 

 

 

04

“EEPROM ERROR”

Error in permanent memory

 

 

 

05

“SENSOR ERROR”

All controlling support modules are unresponsive and

the built-in sensor is not used as a backup option

 

 

 

 

 

Specifications

 

Environment

Temperature

Operating: 32° to 120°F (0° to 48.9°C)

Shipping: -30° to 150°F (-34.4° to 65.5°C)

 

 

 

Relative humidity

Operating: 5% to 90% R.H. (non-condensing)

 

 

 

Electrical

Operating voltage

24VAC (18 – 30VAC)

 

 

Current

Maximum: 2.5A (total), 1.0A (single output)

Maximum surge current: 5A

 

 

 

Battery back-up

AA size alkaline battery x 2

 

 

 

Thermal

Outdoor & Remote temperature sensor

Maximum distance: 300 feet

 

 

Room temperature measurement

Display range: 32° to 99°F (0° to 40°C)

 

 

Outdoor temperature measurement

Display range: -20° to 130°F (-30° to 55°C)

 

 

Setpoint temperature range

Heat: 40° to 90°F (4° to 32°C)

Cool: 50° to 99°F (10° to 37°C)

 

 

 

Setpoint humidity range

Humidification: 10% to 90% R.H.

Dehumidification: 10% to 90% R.H.

 

 

 

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Contents Table of contents Installation Conventional HEAT/COOL Heat Pump Powered ContactThermostat is Powered Humidistat DRY ContactInstaller System Settings Table Setup & TestingEquipment Type Selection Switch SW1 System setting Description Setting rangeInstaller System Settings Table Factory default setting boldSystem Test Tables How to enter the system test menuSystem test menu Screen of the first test step is displayedMain Menu Quick Reference to controls & DisplayHome Screen HumidistatThermostat Features TroubleshootingSpecifications Error CodesError code Message Error Description Aprilaire a division of Research Products Corporation
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8800 specifications

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