Trane WC-IOM-7 manual Troubleshooting, ReliaTel Control, Hazardous Service Procedures

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Troubleshooting

ReliaTel Control

The RTRM has the ability to provide the service personnel with some unit diagnostics and system status information.

￿WARNING

Hazardous Service Procedures!

The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. When possible, disconnect all electrical power including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. When necessary to work with live electrical components, have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these tasks. Failure to follow all of the recommended safety warnings provided, could result in death or serious injury.

Before turning the main power disconnect switch “Off”, follow the steps below to check the ReliaTel Refrigeration Module (RTRM). All diagnostics & system status information stored in the RTRM will be lost when the main power is turned “Off”.

To prevent injury or death from electrocution, it is the responsibility of the technician to recognize this hazard and use extreme care when performing service procedures with the electrical power energized.

1.Verify that the Liteport LED on the RTRM is burning continuously. If the LED is lit, go to Step 3.

2.If the LED is not lit, verify that 24 VAC is presence between J1-1 and J1-2. If 24 VAC is present, proceed to Step 3. If 24 VAC is not present, check the unit main power supply, check transformer (TNS1). Proceed to Step 3 if necessary.

3.Utilizing “Method 1” or “Method 2” in the “System Status Checkout Procedure ” section, check the following:

System status Heating status Cooling status

If a System failure is indicated, proceed to Step 4. If no failures are indicated, proceed to Step 5.

4.If a System failure is indicated, recheck Steps 1 and 2. If the LED is not lit in Step 1, and 24 VAC is present in Step 2, the RTRM has failed. Replace the RTRM.

5.If no failures are indicated, use one of the TEST mode procedures described in the “Unit Start-Up” section to start the unit. This procedure will allow you

WC-IOM-7 • Packaged Heat Pump

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Contents December Packaged Heat PumpModel Number Description Equipment Damage From Ultraviolet UV Lights Contains RefrigerantHazardous Voltage w/Capacitors Contents Contents Model Number Description General Information Rtom ReliaTel Options Module Optional Clogged Filter Switch OptionalGeneral Information Rlci ReliaTel LonTalk Communication Interface OptionalHigh Pressure Control Optional Compressor Disable CPR1/2Power Exhaust Control Optional Low Pressure ControlZone Sensor BAYSENS011B Lead/Lag Control Dual Circuit OnlyZone Sensor Module ZSM BAYSENS007B Zone Sensor Module ZSM BAYSENS009BRemote Zone Sensor BAYSENS016A High Temperature Sensor BAYFRST001ARemote Zone Sensor BAYSENS013C Remote Zone Sensor BAYSENS014CSmoke Detector Sensor Optional Unit InspectionStorage Fiberglass WoolFirst Aid Measures Unit Clearances Unit Dimensions Unit Dimensional Data 12 1/2 Ton, 15 Ton Unit DimensionsUnit Dimensional Data 20 Ton Horizontal Duct Dimensional Data 12 1/2 Ton, 15 Ton Improper Unit Lift Heavy ObjectsRigging Ductwork InstallationIf a Curb Accessory Kit is not used Horizontal UnitsLow Voltage Wiring AC & DC Requirements InstallationFactory Installed Economizer Main Electrical Power RequirementsField Installed Power Wiring Condensate Drain ConfigurationFilter Installation Use Copper Conductors Only Main Unit PowerStandard Wiring Optional Tbue Wiring Through the Base Electrical OptionHazardous Voltage Field Installed Control WiringControl Power Transformer Controls using 24 VAC Rtrm Smoke detector wiring Smoke Detector Customer Low Voltage WiringInstallation Space Temperature Averaging Temperature vs. Resistance Voltage Imbalance Compressor Crankcase Heaters Optional Electrical Phasing Three Phase MotorsLive Electrical Components ReliaTel Controls Test Modes Pre-StartVerifying Proper Air Flow Units with Belt Drive Indoor Fan Pre-StartReturn Air Smoke Detector Compressor Start-Up Start UpEconomizer Start-Up Rotating ComponentsScroll Compressors Start UpHeating Start-Up Final System Setup Fan Belt Adjustment Belt Drive Units MaintenanceMonthly Maintenance Hazardous Voltage MaintenanceFilters Return Air Smoke Detector MaintenanceCooling Season Heating Season Coil CleaningFinal Process Hazardous PressuresSample maintenance log ReliaTel Control TroubleshootingHazardous Service Procedures System Status Checkout Procedure TroubleshootingMethod System FailureCool Failure Resetting Cooling and Heating LockoutsHeat Failure Fan Failure Switch Zone Temperature Sensor ZTS Service IndicatorClogged Filter Switch Ztemp Test Cooling Set Point CSP and Heating Set Point HSPProgrammable & Digital Zone Sensor Test Test System Mode and Fan SelectionTesting serial communication voltage Unit Operation without a Zone Sensor ReliaTel Refrigeration Module Rtrm Default ChartUnit Economizer Control ECA Troubleshooting ReliaTel Control Drawing Number Description Wiring DiagramsHeat Pump WarrantyWarranty Page WC-IOM-7
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