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TROUBLESHOOTING
Loss of Wireless Communications
Contact your service provider.
System Error Messages
Communication Error
If the User Interface and UIOB cannot communicate with each other, an
error message states, “Communication Error Between Thermostat and I/O
Board.”
Room Air Temperature Sensor Failure
If the room air temperature sensor reads less than -50_ F or greater than
150_ F, it is considered failed.
The Y1, Y2, W1, W2 outputs will be turned off and the room temperature
display will show “--”. The fan will continue to run if the user has set the
fanselectionto“fanon”.
The home screen displays, “Room Air Temperature Failure”.
Outdoor Air Temperature Sensor Failure
If the outdoor air temperature sensor reads less than -50_ F or greater than
150_ F, it is considered failed.
If any feature requiring an outdoor air temperature sensor has been enabled
and the outdoor air temperature sensor fails, then a -- error message is
displayed in the outdoor air temperature location.
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