Trane Symbio 700 Controller User Manual

46
ACC-APG002A-EN
Sensor Fault
On Symbio™ 700, if a sensor value goes outside of its minimum or maximum range, the point goes into
an Alarm State. If the point in the Alarm State, we consider the sensor failed and take the following
actions:
Fault Symbio 700 Response Response Type
Space Temperature Active
• Annunciated in the Active Alarm list.
• For specific unit operational response, see Space
Temperature Control (CVZT/VVZT) section of this
document.
• (VVDA) Loss of Space Temperature Active does not
shutdown unit operation; rather, disables specific
operating modes that require valid space
temperature.
Auto Reset
Discharge Air Temperature Local
• Annunciated in the Active Alarm list.
• For specific unit operational response, see Space
Temperature Control (CVZT/VVZT) section of this
document.
• (VVDA) Loss of Discharge Air Temperature Sensor
results in a loss of heating and cooling capacity.
Auto Reset
Outdoor Air Temperature Active
• Annunciated in the Active Alarm list.
• Economizer cooling disabled.
Auto Reset
Coil Temperature Sensor 1
• Annunciated in the Active Alarm list.
• If Outdoor Air Temperature < 52° F, Demand
Defrost will be disabled and timed defrost will be
used.
Auto Reset
Coil Temperature Sensor 2
• Annunciated in the Active Alarm list.
• If Outdoor Air Temperature < 52°F, Demand Defrost
will be disabled and timed defrost will be used.
Auto Reset
Space Humidity Sensor
• Annunciated in the Active Alarm list.
• Space Dehumidification disabled.
• Comparative Enthalpy disabled.
Auto Reset
Space CO2 Sensor
• Annunciated in the Active Alarm list.
• Demand Controlled Ventilation disabled.
Auto Reset
Duct Static Pressure Local VVDA: Loss of Duct Static Pressure Sensor shall result
in a unit shutdown.
Auto Reset
Duct Static Pressure Local Lockout VVDA: Loss of Duct Static Pressure Sensor three times
within 1-hour shall result in a unit shutdown.
Manual Reset
Duct Static Pressure Limit Trip VVDA: The supply air static pressure exceeded the
Supply Air Static Pressure High Limit Setpoint. Supply
fan shall turn off (immediate shutdown) for 3 minutes
before being allowed to start.
Auto Reset
Duct Static Pressure Limit Lockout VVDA: The supply air pressure has exceeded the Duct
Static Pressure High Limit Setpoint for the 3rd
consecutive time without the supply fan running for 3
continuous minutes. (If the fan runs for 3 continuous
minutes the counter will be reset.)
Manual Reset
Compressor Fault
Symbio™ 700 supports compressor safety functionality to keep the compressors from operating in an
undesirable condition. If a compressor safety failure occurs, the following actions occur:
Troubleshooting

Trane Symbio 700 Controller Specifications

General

Brand	Trane
Model	Symbio 700 Controller
Category	Controller
Language	English