Trane Tracer Unit Ventilator, ZN.520 manual Troubleshooting

Page 59

Troubleshooting

Table 28: Tracer™ ZN.520 Unit Controller diagnostics

Diagnostic

Unit Response

Latching/non-

Reset

latching

 

 

 

 

 

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Humidity Input Failure4

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/electric heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

CO2 Sensor Failure4

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/electric heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Generic AIP Failure4

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/electric heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Defrosting - Cmpr Lockout4

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/electric heat—OFF

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Maintenance Required

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/electric heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Local Fan Mode Failure4

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/Electric Heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Local Setpoint Failure4

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Face bypass damper—ENABLED

 

 

 

 

DX/electric heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

 

Fan—ENABLED

 

 

 

Valves—ENABLED

 

 

Generic Temperature

Outdoor air damper—ENABLED

Non-latching

Communicated or manual reset

Failure

Face bypass damper—ENABLED

 

 

 

DX/electric heat—ENABLED

 

 

 

Baseboard heat—ENABLED

 

 

 

 

 

 

UV-SVP01A-EN

53

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Contents Tracer ZN.520 for Classroom Unit Ventilator Installation Owner DiagnosticsInstallation of New Units Start-up ProceduresPower Up Sequence Tracer ZN.520 Overview General InformationGeneral Information Tracer ZN.520 unit controller circuit board Controller Circuit Board FeaturesTypical Components Controller FeaturesService Integrated Comfort System Communication ConfigurationsPeer-to-Peer Communications Interoperability Stand-AloneCommunication Interface Description End Device SpecificationsCharacteristic Standard End DevicesStandard End Devices Way Control Valve Time clock Zone sensor Dpdt Control Transformer Specifications Installation and WiringBinary Inputs Generic/baseboard Heat Binary Output Binary OutputsAnalog inputs Analog InputsMounting Vertical classroom unit ventilator end pocket Power WiringProper zone sensor placement Installing the Wall- Mounted Zone Sensor OptionalHumidity and CO2 Sensors Typical Wiring Diagram-Wall Mounted Zone Sensor Typical Wiring Diagram-Unit Mounted Zone Sensor Typical Wiring Diagram-Unit Input and output summary Input/Output SummaryInput/Output Summary Heating source ConfigurationConfigurable parameters Cooling sourceBinary Outputs1 Analog input summary Binary input summary ConfigurationBinary Inputs1 Analog Inputs1Default Fan ConfigurationEnd Device Configurations Fan configuration rangesDischarge Air Limits Setpoint defaults Default Valid rangeDischarge air limit ranges Default Valid range SetpointsMaintenance Timers Occupied Bypass TimerPower-Up Control Wait Winking Location IdentifierUnit Identification Tag Occupancy Power-UpUnit Operation Heating And Cooling Changeover LogicHeat/Cool Changeover logic Fan Operation Fan Off DelayCooling Operation Heating OperationModulating Valves Valve OperationFace-and-Bypass Damper Operation Exhaust fan/damper operationTemperature Assumed1 Entering Water Temperature SamplingWater assumption chart Unit ConfigurationBaseboard Heat Operation Economizer OperationDX Operation Electric Heat OperationOther Modes Filter Status/ Maintenance TimerOutput Overrides Fan StatusSimple data sharing application Data Sharing-LonWorksMore complex data sharing application Heating And Cooling Changeover Logic Heat/Cool Changeover logic Cooling Operation Valve Operation Entering Water Temperature Sampling Economizer Operation Output Overrides Data Sharing-LonWorks More complex data sharing application Yellow Comm LED TroubleshootingRed Service LED Black Service Push ButtonExit6 Test ProcedureTroubleshooting Outdoor Air Temperature Failure Space Temperature FailureEntering Water Temperature Failure Discharge Air Temperature LimitDiagnostics Troubleshooting Translating Multiple Diagnostics Fans Rover service toolValves stay open Probable cause Possible Explanation ValvesValves stay closed Probable cause Possible Explanation Outdoor air damper stays closed Probable cause Explanation DX/Electric HeatOutside Air Damper Probable Cause Explanation Outdoor air damper stays openReplacing Circuit Boards Tracer ZN.520 Unit Controller ReplacementAppendix Hardwired Setpoint AdjustmentFan Switch Resistance Values Hardwired Thermistor ValuesFunction Appendix-Binary ConfigurationBinary Configuration Binary configuration details Binary input or outputUnit Operation Based On The Effective HEAT/COOL Output Heat/cool mode input NviHeatCoolEffective heat/ cool mode output nvoHeatCool Appendix-Unit OperationAppendix-Unit Operation Input/output listing1 Configuration properties1Appendix-Data Lists Data ListsSet the Program Setting the Time ClockAppendix-Timeclock Set the Time and DayOverride Program Manual Operation Review and Change ProgramsAppendix-Timeclock Appendix-Location Identifier Location Identifier Location Identifier Location Identifier Trane Company
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