Trane Tracer ZN511 Installation And Operation Manual page 76

Chapter 8 Status indicators for operation and communication
Table 19. Diagnostics for 1 heat/1 cool configurations
Diagnostic
Maintenance Required
Condensate Overflow
Low Temp Detection
Zone Temp Failure
Entering Water Temp
Failure
Discharge Air Temp
Failure
Setpoint Failure
Fan Mode Failure
Invalid Unit Configura-
tion
1 For more information on types of diagnostics and how they are cleared from the controller, see "Clearing diagnos-
tics" on page 66.
2 When the entering water temperature is required but not present, the 1 heat/1 cool unit generates a diagnostic to
indicate the sensor loss condition. The controller automatically clears the diagnostics once a valid entering water
temperature value is present (nonlatching diagnostic). When the entering water temperature fails, the controller pro-
hibits all cooling operating, but allows the delivery of heat when heating is required. In cool mode, all cooling is
locked out, but normal fan and damper operation is permitted.
64
Probable cause
Fan run hours exceed the
time set to indicate filter
change
The drain pan is full of
water
The leaving fluid temper-
ature is close to freezing
Invalid or missing value
for zone temperature
Invalid or missing value
for zone temperature
Invalid or missing value
for zone temperature
Invalid or missing value
for zone set point
Zone set point
Software configuration is
done improperly
Consequences
Fan unaffected
Valves unaffected
Electric heat unaffected
Damper unaffected
Fan off
Valves closed
Electric heat off
Compressors off
Damper closed
Fan off
Valves open
Electric heat off
Damper closed
Fan off
Valves closed
Electric heat off
Compressors off
Damper closed
Fan unaffected
2
Valves unaffected
2
Electric heat unaffected
2
Damper unaffected
Fan unaffected
Valves unaffected
Electric heat unaffected
Damper unaffected
Fan unaffected
Valves unaffected
Electric heat unaffected
Damper unaffected
Fan unaffected
Valves unaffected
Electric heat unaffected
Compressors unaffected
Damper unaffected
Fan off
Valves closed
Electric heat off
Compressors off
Damper closed
1
Diagnostic type
Informational
Manual
Smart reset/Manual
Automatic
Automatic
Automatic
Automatic
Automatic
Manual
CNT-SVX06B-EN