Trane Tracer ZN521 Installation And Operation Manual page 50

Status indicators for operation and communication
Table 16. Diagnostics (continued)
Diagnostic
Discharge Air Temp Failure
Outdoor Air Temp Failure
Humidity Input Failure
CO Sensor Failure
2
Generic AIP Failure
Local Fan Mode Failure
Local Setpoint Failure
Generic Temperature Failure
Invalid Unit Configuration
Normal
50
Probable cause
Invalid or missing value for
discharge air temperature
Invalid or missing value for
outdoor air temperature
Invalid or missing value for
relative humidity
Invalid or missing value for CO
Invalid or missing value for
generic analog input
Invalid or missing fan-speed
switch (reverts to default fan
speed)
Invalid or missing value for zone
temperature setpoint (reverts to
default setpoint)
Invalid or missing generic
temperature value
Software is configured
improperly
On start-up
Consequences
Fan off
Valves closed
Outdoor air damper closed
Face and bypass damper bypass
DX cooling/electric heat off
Baseboard heat off
Fan unaffected
Valved unaffected
Outdoor air damper minimum
position
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Fan unaffected
Valves unaffected
Outdoor air damper unaffected
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Dehumidification sequence off
Fan unaffected
2
Valves unaffected
Outdoor air damper unaffected
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Fan unaffected
Valves unaffected
Outdoor air damper unaffected
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Fan unaffected
Valves unaffected
Outdoor air damper unaffected
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Fan unaffected
Valves unaffected
Outdoor air damper unaffected
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Fan unaffected
Valves unaffected
Outdoor air damper unaffected
Face and bypass damper unaffected
DX cooling/electric heat unaffected
Baseboard heat unaffected
Fan off
Valves off
Outdoor air damper closed
Face and bypass damper closed
DX cooling/electric heat off
Baseboard heat off
Fan unaffected
Valves unaffected
Electric heat unaffected
Compressors unaffected
Damper unaffected
Diagnostic
type
Automatic
Automatic
Automatic
Informational
Informational
Automatic
Automatic
Informational
Manual
Automatic
CNT-SVX07D-EN