Trane SCXG-SVX01B-EN manual RTM Data Storage Error, RTM Zone Sensor Failure

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Maintenance diagnostics

RTM Aux.Temp. Sensor Failure Problem: The RTM auxillary temperature sensor data is out of range.

Check: Sensor resistance should be between 830 ohms (200°F)and 345.7 ohms (-40°F). If so, check field/unit wiring between sensor and RTM.

Reason for Diagnostic: At least one enabled unit function has the RTM auxillary temperature input designated as its sensor, and the unit is reading a signal that is out of range for this input (temp. < -55°F or temp > 209°F).

UCM Reaction: The functions with the RTM auxillliary temperataure input deignated as their sensor are disabled.

Reset Required: (PAR) an automatic reset occurs after the designated zone temperature signal returns to its allowable range.To prevent rapid cycling of the diagnostic, there is a 10 second delay before the automatic reset.

RTM Data Storage Error

Problem: There was a data transmission error.

Check: This can be caused by an intermittant power loss.Turn the unit off for 1-2 minutes, then back on again. If diagnostic persists, then the RTM may need to be replaced.

Reason for Diagnostic: An error occurred while the RTM was writing data to its internal non-volitile memory (EEPROM).

UCM Reaction: An information only diagnostic will be displayed at the human interface.

Reset Required: (INFO) A manual reset may be made at the human interface, at Tracer Summit, or by cycling power to the RTM.

RTM Zone Sensor Failure

Problem: The RTM zone temperature sensor input is out of range.

Check: Sensor resistance should be between 830 ohms (200°F) and 345.7

ohms (-40°F). If so, check field/unit wiring between sensor and RTM.

Reason for Diagnostic: At least one enabled unit function has the RTM zone temperature input designated as its sensor, and the unit is reading a signal that is out of range for this input (temp. < - 55°F or temp > 150°F).

UCM Reaction: The functions with the RTM zone temperataure input deignated as their sensor are disabled.

Reset Required: (PAR) an automatic reset occurs after the designated zone temperature signal returns to its allowable range.To prevent rapid cycling of the diagnostic, there is a 10 second delay before the automatic reset.

S

SCM Communication Failure Problem: The RTM has lost communication with the SCM.

Check: Check field/unit wiring between the RTM and SCM.

Reason for Diagnostic: The RTM has lost communication with the SCM.

UCM Reaction: A “lockout” request is sent to the compressor staging control function. A failsafe function in the SCM will cause all SCM outputs to be zeroed and deenergized.

Reset Required: (PAR) An automatic reset occurs after communication has been restored.

Space Static Press Setpt Failure Problem: The active space static pressure setpoint is out of range.

Check: Check setpoint value. Also, if space pressure setpoint source is GBAS, but this setpoint has not been assigned to any of the four analog inputs on GBAS, this message will occur.

Reason for Diagnostic: The unit is reading a signal that is out of range for the space static pressure setpoint (input < 0.03 iwc or input > 0.20 iwc).

UCM Reaction:The default space pressure setpoint will become the active space pressure setpoint.

Reset Required: (PAR) An automatic reset occurs after the designated space pressure setpoint source sends a signal within range for 10 continuous seconds, or after a different space pressure setpoint source is user-defined.

Supply Air Pressure Sensor Failure Problem: The supply air pressure sensor voltage input is out of range.

Check: Check field/unit wiring between the sensor and RTM.

Reason for Diagnostic: The unit is reading a signal that is out of range for the supply air pressure sensor voltage input (input < 40mV or input > 4.75V)

UCM Reaction: The IGVs will drive closed, and the following functions are disabled; a. SA pressure control

b. SA static pressure limit

Reset Required: (PAR) An automatic reset occurs after the SA temp heating setpoint input returns to within range for 10 continuous seconds, or after a different SA temp heating setopint selection source is user-defined.

Supply Air Pressure Setpoint Failure Problem: The SA pressure input signal is out of range.

Reason for Diagnostic: The SA pressure setpoint input is sending a signal that is out of range (Input < 1.0 iwc or input > 4.3 iwc)

UCM Reaction: The default SA pressure setpoint will become the active SA pressure setpoint.

Reset Required: (PAR) An automatic reset occurs after the designated SA pressure setpoint source sends a signal within range for 10 continuous seconds, or after a different SA pressure setpoint source is user-defined.

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SCXG-SVX01B-EN

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Contents JO and later design sequence ModelsSpecial Note on Refrigeration Emissions IntroductionHazard Identification HazardousVoltage w/CapacitorsContents Features and Benefits Refrigerant Handling ProceduresModular Series Self-Contained Unit Components Installation information Unit NameplateModel Number Description Scwg Model Number DescriptionDigit Digit 31 Compressor ServiceValvesDigit 22 Unit Finish Digit 24 Unit ConnectionSelf-Contained Ship-WithAccessory Model Number Description Model Number Description PswgAfter-ShipmentAccessory Model Number Receiving and Handling Shipping PackageInstallation Preparation Section ServiceAccessTable I-PC-1. Service and code clearance requirements TopView CCRC/CIRC 20, 29Rigging and Unit Handling Lifting Equipment CapacityUnit Handling Procedure Figure I-PC-7.Assembled modular unit proper riggingRemove panels FML, FMM, and FMR Split-Apart Unit AssemblyIntelliPak UnitsUCM Only Units with Thermostat OnlyFigure I-PC-9 How to assemble the split apart modular unit External Unit Isolation Pre-Installation ChecklistSkid Removal SCWG/SIWG Dimensions, DimensionsWeights Left-side viewLeft-side View Right-side view Top view SCRG/SIRG Dimensions,SCRG/SIRGWeight, lbs Dimensions Weights Detail Dimensions,CCRC/CIRC Electrical connections, CCRC/CIRC Air-cooled condenser dimensions & weight, in-lbsCCRC/CIRC -Air-Cooled Condenser CCRC/CIRC Refrigerant connections,Hot water coil dimensions & weight, in-lbs Hot Water CoilSteam coil dimensions, in-lbs Steam CoilFlexible Horizontal Discharge Plenum Electric heat coil dimensions & weight, in-lbsElectric Heat Coil Waterside economizer weight, in-lbs Waterside EconomizerDetail a Detail B Airside economizer dimensions & weight, in-lbsAirside Economizer Control and LineVoltage Dimensions Weights VFDVariable Frequency Drive Option VFD Result in death or serious injury Mounting RequirementsVariable Frequency Drive with Bypass Electrical Installation ProcedureVFD with bypass dimensions, Water Piping Mechanical SpecificationsDuct Connections Hazardous Voltage w/Capaci- torsWaterside Piping Arrangements Table I-MR-1. Water Connection SizesHazard of Explosion and Deadly Gases Brazing ProceduresRefrigerant Piping Air-Cooled Units Only Live Electrical Components Unit Wiring DiagramsSupply PowerWiring Equipment DamageSelection Procedures Supply Fan Isolators Installation requirementsPre-Startup Procedures Shipping bracketFigure I-PR-3. Correct plenum insulation placement Field Wiring Connections Airside Economizer InstallationUnit Installation Unit HandlingTransducer Location Static PressureTransducer Installation VAV units onlyInstalling theTransducer Waterside Economizer Installation Procedure Figure I-PR-7. Installing the waterside economizerTubing assemblies for waterside econo Mizer left-hand piping Waterside Economizer Ship-Separate Parts List Unit Structural Integrity Hydronic Coil InstallationInstallation Procedure Table I-PR-2.Available Electric Heat kW Electric Heat InstallationElectric Heat CoilWiring Procedure CV Unit Zone Sensor Options Standard with All IntelliPak UnitsZone Sensor Options for IntelliPak Control Units BAYSENS077* DescriptionBAYSENS074 Description CV andVAV Unit Zone Sensor OptionsVAV Unit Zone Sensor Option BAYSENS073 DescriptionMounting Location Zone Sensor InstallationWiring Mounting the SubbaseRight Mounting Directly to the Wall Mounting to Junction Box Programmable Zone Sensors ConstantVolume Zone Sensor BAYSENS019 DescriptionVariable AirVolume Zone Sensor BAYSENS020B Description Programmable Zone Sensor Installation Airflows from adjacent zones or other unitsWiring theTimeclock Time Clock InstallationTime Clock Installation Checklist Time Clock OptionRemote Human Interface Panel Remote Human Interface Panel InstallationHuman Interface HI Panel Location RecommendationsWall Mounting the RHI Panel ProcedureMounting the Remote Human Interface RHI Panel Pre-startup Communication Link ShieldedTwisted PairWiring Wiring the Remote Human InterfaceLowVoltage AC FieldWiring Connections Interprocessor Communication Bridge ModuleWiringConnecting toTracer Summit Pre-Startup ChecklistInstallation programming Programmable Zone Sensor OptionsHeat supply air Cool supply air Warmup temperature During Programming IndicatesKeypad Operation Keypad Lockout Temporary Manual OverrideTime Button Up and Down Button ArrowsTemporary Override Run Mode Figure I-P-6.Temporary manual override menu screenFigure I-P-7.Temporary manual override run mode screen Table I-P-1. Zone sensor BAYSENS019 option menu settingsTo use Intelligent Copy Remote Panel Indicator Signals From UCM to ZSMIntelligent Copy Off FlashingIcon Descriptions Figure I-P-9.BAYSENS019 complete icon displayFigure I-P-10.BAYSENS020 complete icon display Programming Setting theTimeProgramming theTime Clock Option To review and change programsPre-Startup Checklist Installation startupUnit Startup Procedures Compressor DamageCompressor Amp Draw Startup LogEvaporator Water Cooled Units Air Cooled UnitsPoints List Ecem Module Points List RTM ModulePoints List Gbas Module Points List -TracerTMLCI-I ModuleUnit Control Components RTM Module Board Standard on all UnitsTable O-GI-3. RTM setpoint analog inputs Table O-GI-2. RTM sensor resistance vs. temperatureVAV Box Option Ventilation Override Module VOM Option Human Interface Module Standard on all UnitsHeat Module Purge sequence D Supply fan on Supply fan VFD on if equippedGeneric BuildingAutomation System Module Option Table O-GI-6. Gbas analog input setpoints Table O-GI-7. Gbas input voltage corresponding setpointsWaterside Components Figure O-GI-3. Basic water piping, constant water flow UnitAirside Components General Operation information Airside Economizer Interface with Comparative Enthalpy Air-Cooled CondensersInput Devices and System Functions ProperWaterTreatmentSupply Airflow Proving Switches Return AirTemperature SensorSupply Air Temperature Sensor Filter SwitchUnoccupied Sequence of Operation Operation operationControl Sequences Operation Tracer Summit SystemTimed Override Activation ICS Morning WarmupCycling Capacity Morning Warmup MWU Occupied Sequence Water-Cooled Units Only Supply Air Setpoint Reset VAV Units OnlyMechanical Cooling Electric HeatTable O-SO-1. Compressor Stages CompressorsCompressor Lead/Lag Operation Table O-SO-2. Pressure cutouts Step ControlEvaporator Coil Frost Protection Service Valve Option OperationMaintenance information Table M-GI-1. SCWG/SIWG/SCRG/SIRG General Maintenance DataAir Filters Maintenance proceduresMaintenance Procedures Remove all standing water Inspecting and Cleaning the Drain PanInspecting and Cleaning the Fan Fan Drive Supply FanVariable Frequency Drive VFD Table M-MP-2.AO Smith Bearing Lubrication Schedule Fan BearingsTable M-MP-1. Baldor Fan Bearing Lubrication Schedule Table M-MP-3. Compatible Fan Bearing GreaseTable M-MP-4. Fan shaft bearing torques Fan BeltTensionDeflection = belt span/64 Adjusting BeltTension BeltRefrigerant Evacuation Refrigerant SystemConfined Space Hazards Use of Pressure Regulator Valves Gauges Refrigerant LeakTestingMotor Winding Damage R407cMaintenance Inlet GuideVanes Coil Fin CleaningProper Coil CleaningAgent Coil Freezeup Cleaning the Flow Switch Chemical Cleaning of Condenser and Economizer CoilFlow Switch Maintenance Piping ComponentsSemi-Annual Maintenance Maintenance Periodic ChecklistsMonthly Checklist Annual MaintenanceCommon Unit Problems and Solutions Check the zone thermostat settingsOperating Procedures System ChecksMaintenance diagnostics DiagnosticsEntering Cond WaterTemp Sensor Fail Heat Module Auxilliary Temperature Sensor FailEmergency Stop Entering Water Temp Sensor FailLow Pressure Control Open Circuit 1, 2, 3, or Mode Input FailureLow Air Temp Limit Trip MCM Communications FailureHumidity Sensor Failure NSB Panel ZoneTemperature Sensor FailureCheck Field/unit wiring between RTM and NSB Panel Temp. Sensor FailureRTM Data Storage Error RTM Zone Sensor FailureSupply Fan Failure Supply Fan VFD Bypass EnabledProblemThe LCI-I has lost communication withTracer Summit LCI-I Module Comm FailureWSM Communications Fail Render all HI keystrokes ineffectiveVOM Communications Failure WSM Mixed AirTemp Sensor Fail Water Flow Fail114 115 Literature Order Number

SCXG-SVX01B-EN specifications

The Trane SCXG-SVX01B-EN is an advanced variable refrigerant flow (VRF) system designed to provide efficient and flexible heating and cooling solutions for commercial and residential applications. This system exemplifies Trane's commitment to innovation, energy efficiency, and ease of installation, making it a standout choice in the industry.

One of the main features of the SCXG-SVX01B-EN is its ability to deliver precise temperature control across multiple zones. The system utilizes a modular design that allows for the connection of multiple indoor units to a single outdoor unit, enabling simultaneous heating and cooling in different areas of a building. This zoned comfort not only enhances occupant satisfaction but also contributes to energy savings by allowing for targeted climate control where it is most needed.

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The unit's compact design simplifies installation, making it suitable for both retrofit projects and new constructions. The flexible piping layout supports various configurations, allowing easy adaptation to the building's architecture. The model also incorporates intelligent controls, offering a user-friendly interface that enhances operational flexibility and promotes energy management.

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