Trane WC-IOM-7 manual Unit Economizer Control ECA Troubleshooting ReliaTel Control

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Troubleshooting

Unit Economizer Control (ECA) Troubleshooting

ReliaTel Control

Table 10. Verify economizer status by economizer actuator (ECA) LED indicator:

OFF:		No Power or Failure

ON:		Normal, OK to Economize

Slow Flash:		Normal, Not OK to Economize

		1/2 Second On / 2 Seconds Off:
Fast Flash -
Fast Flash -		Error Code:

		Communications Failure

Pulse Flash:		2 Second On / 1/2 Second Off:

		Error Code:

1	Flash:	Actuator Fault

2	Flashes:	CO2 Sensor

3	Flashes:	RA Humidity Sensor

4	Flashes:	RA Temp Sensor

5	Flashes:	OA Quality Sensor

6	Flashes:	OA Humidity Sensor

7	Flashes:	OA Temp Sensor

8	Flashes:	MA Temp Sensor

9	Flashes:	RAM Fault

10 Flashes:		ROM Fault

11 Flashes:		EEPROM Fault

WC-IOM-7 • Packaged Heat Pump

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Contents December Packaged Heat PumpModel Number Description Hazardous Voltage w/Capacitors Contains RefrigerantEquipment Damage From Ultraviolet UV Lights 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 InspectionFirst Aid Measures Fiberglass WoolStorage 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 RequirementsFilter Installation Condensate Drain ConfigurationField Installed Power Wiring Use Copper Conductors Only Main Unit PowerStandard Wiring Optional Tbue Wiring Through the Base Electrical OptionControl Power Transformer Field Installed Control WiringHazardous Voltage Controls using 24 VAC Rtrm Smoke detector wiring Smoke Detector Customer Low Voltage WiringInstallation Space Temperature Averaging Temperature vs. Resistance Voltage Imbalance Live Electrical Components Electrical Phasing Three Phase MotorsCompressor Crankcase Heaters Optional 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 ComponentsHeating Start-Up Start UpScroll Compressors Final System Setup Fan Belt Adjustment Belt Drive Units MaintenanceMonthly Maintenance Hazardous Voltage MaintenanceCooling Season Return Air Smoke Detector MaintenanceFilters Heating Season Coil CleaningFinal Process Hazardous PressuresSample maintenance log Hazardous Service Procedures TroubleshootingReliaTel Control System Status Checkout Procedure TroubleshootingMethod System FailureHeat Failure Resetting Cooling and Heating LockoutsCool Failure Clogged Filter Switch Zone Temperature Sensor ZTS Service IndicatorFan Failure Switch Ztemp Test Cooling Set Point CSP and Heating Set Point HSPTesting serial communication voltage Test System Mode and Fan SelectionProgrammable & Digital Zone Sensor Test 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