RT-SVP011E-EN 93
Troubleshooting
MP: Reset Has Occurred Platform Warning Non-Latching
The Symbio™ 800 controller has successfully
recovered from a reset and built its application. A
reset may have been due to a power up, installing
new software or configuration.
This diagnostic is immediately and automatically
cleared and thus can only be seen in the Historic
Diagnostic List in Tracer
®
TU.
Normal operation after re-boot. Access Historic
Alarms page on the Front Panel for date and time
stamp.
Remote
Outdoor Air Damper
Input
Unit Warning Non- Latching
The Outdoor Air Damper Input has failed out of
range. This voltage is an indication of actual damper
position.
Economizer cooling is terminated and the Outdoor Air
Damper is commanded closed.
Remote
Outdoor Air Damper
Not Modulating
Unit Warning Non- Latching
The unit is in any mode that is not active economizer
cooling and the OAD position has been lower than the
minimum ventilation command by 10% for 5
continuous minutes.
No unit response.
Remote
Outdoor Air Enthalpy
Active is Invalid
Unit Warning Non-Latching
Loss of outdoor air enthalpy implies either Outdoor
Air Temperature or Outdoor Air Humidity is invalid.
This drives a ‘fall back’ response to Dry Bulb
Economizer decisions if Outdoor Air Temperature is
available, otherwise Economizer cooling is disabled.
Remote
Outdoor Air Humidity
Sen
sor
Unit Warning Non-Latching
The Outdoor Air Humidity sensor has failed out of
range.
No action is taken for this sensor failure only the
Outdoor Air Humidity Sensor Active has special
action.
Remote
Outdoor Air Humidity
Sen
sor Active
Unit Warning Non-Latching
The Active Outdoor Air Humidity sensor has failed out
of range.
This drives a ‘fall back’ response to Dry Bulb
Economizer decisions if Outdoor Air Temperature is
available, otherwise Economizer cooling is disabled.
Outdoor Air
Temperature Sensor
DX Cooling Warning Non-Latching
The Outdoor Temperature sensor has failed out of
range.
No action is taken for this sensor failure only the
Outdoor Air Temp Active is Invalid has special action.
Remote
Outdoor Air Temp
Active is Invalid
DX Cooling
Normal
Shutdown
Non-Latching
All sources for Outdoor Air Temperature are invalid.
Economizer cooling is terminated.
Remote
Outdoor Airflow
Pressure Sensor
Unit Warning Latching
The Outdoor Airflow Pressure sensor has failed out of
range.
Traq function is disabled. Ventilation falls back to
Outdoor Airflow Compensation or Minimum
Ventilation Setpoint.
Remote
Pre Evaporator Filter
Pr
essure Sensor
Unit Warning Non-Latching
The Pre Evaporator Filter Pressure sensor has failed
out of range.
Note: The Hex IO cannot detect when the ground
wire for the sensor goes open circuit.
No unit response.
Remote
Diagnostics Target Severity Persistence Condition / Response Reset Level
To Next Page
Loading...
