Trane DX1B060A9H31B, UX1C100A9H41B, UX1B080A9H31B Integrated Furnace Control Error Flash Codes

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Installer’s Guide

INTEGRATED FURNACE CONTROL ERROR FLASH CODES

	Flashing Slow ---	Normal - No call for Heat
	Flashing Fast ---	Normal - Call for Heat
	Continuous ON ---	Replace IFC
	Continuous OFF ---	Check Power
	2 Flashes ---	System Lockout (Retries or Recycles exceeded)
		Draft Pressure Error - Possible problems:
	3 Flashes ---	a) Venting problem
	3 Flashes ---	b) Pressure switch problem
		b) Pressure switch problem
		c) Inducer problem
	4 Flashes ---	Open Temperature Limit Circuit
	5 Flashes ---	Flame sensed when no flame should be present
	6 Flashes ---	115 volt AC power reversed, poor grounding or system voltage too low
	7 Flashes ---	Gas valve circuit error
	8 Flashes ---	Low flame sense signal
	9 Flashes ---	Check Ignitor Circuit and Line "N" to 24VAC "Common" voltage (≤ 2 volts)
	9 Flashes ---	[possible grounding problem]
		[possible grounding problem]

18-CD22D1-8

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Contents Installer’s Guide Carbon Monoxide Poisoning Hazard Safety SectionInstaller’s Guide Contents Installer’s Guide UX1-H Outline DrawingDX1-H Downflow Installations Upflow InstallationHorizontal Installation Subbase Cross SectionOutside AIR is Recommended AIR for Combustion and VentilationConfined Space Return AIR Duct Systems Duct ConnectionsOptional Filter Rack Installation for BOT- TOM Return Typical Upflow Return AIR Filter InstallationsReturn AIR Filters Upflow Furnace onlyAirflow Typical Downflow Furnace Return AIR Filter Installations Alternate Upflow Filter Clip Bracket Installation KIT09224Models Cabinet Filter Numbers QTY & SizeGeneral Venting Vent Fitting Material Plastic PVC Vent Fitting MaterialBonding of PVC Vent and Inlet AIR Connections Horizontal VentingUpflow Furnace Inside Corner Detail Possible Configurations for TWO Pipe Venting Systems BAYVENT200B Horizontal Venting Through WallCombustible Material Wall Noncombustible Material WallBAYAIR30AVENTA BAYVENT200B Direction of Stainless Steel Fitting Downward VentingInstaller’s Guide EE Caution Used Through Chimney That Vents Another GAS ApplianceVertical Applications Condensate Drain InstructionsUpflow Vertical Horizontal ApplicationsDownflow Downflow VerticalVertical Downflow HorizontalTwinning Furnaces Electrical ConnectionsStage Heating only Thermostat Stage Heat / 1 Stage Cool Thermostat GAS PipingUpflow Left Hand GAS Piping Combustion and Input Check Orifice SizesHigh Altitude Derate Final Manifold Pressure SettingsReinstallation of the Burner BOX Cover Start UP and AdjustmentPreliminary Inspections Sequence of Operation Lighting InstructionsRoom AIR Thermostat Heat Anticipator Adjustment Airflow AdjustmentBurner BOX Temperature Limit Device Power FailureLimit switch must be reset by a qualified servicer Reset After Burner BOX Limit ShutdownIntegrated Furnace Control Error Flash Codes Trane