Desa VSF30NT ODS/pilot lights but flame, Press in control knob fully, Released Long enough

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TROUBLESHOOTING

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY

ODS/pilot lights but flame	1. Control knob not fully pressed in		1.	Press in control knob fully
goes out when control knob is	2. Control knob not pressed in		2. After ODS/pilot lights, keep con-
released		long enough		trol knob pressed in 30 seconds
	3.	Equipment shutoff valve not	3.	Fully open equipment shutoff
		fully open		valve
	4.	Thermocouple connection	4.	Hand tighten until snug, then
		loose at control valve		tighten 1/4 turn more
	5.	Pilot ﬂame not touching ther-	5.	A) Contact local natural or
		mocouple, which allows ther-		propane/LP gas company
		mocouple to cool, causing		B) Clean ODS/pilot (see
		pilot flame to go out. This		Cleaning and Maintenance,
		problem could be caused by		page 15) or replace ODS/pilot
		one or both of the following:		assembly
		A) Low gas pressure
		B) Dirty or partially clogged
		ODS/pilot
	6.	Thermocouple damaged	6.	Replace pilot assembly
	7.	Control valve damaged	7.	Replace control valve
	8.	Safety interlock system has	8.	Wait one minute for safety in-
		been triggered (thermostat		terlock system to reset. Repeat
		models only)		ignition operation

Burner(s) does not light after	1. Burner oriﬁce(s) is clogged		1.	Clean burner oriﬁce(s) (see
ODS/pilot is lit				Cleaning and Maintenance,
				page 15) or replace burner
				oriﬁce(s)
	2.	Inlet gas pressure is too low	2.	Contact local natural or pro-
				pane/LP gas company

Delayed ignition of burner(s)	1. Manifold pressure is too low		1.	Contact local natural or pro-
				pane/LP gas company
	2.	Burner oriﬁce(s) is clogged	2.	Clean burner oriﬁce(s) (see
				Cleaning and Maintenance,
				page 15) or replace burner
				oriﬁce(s)

Burner backﬁring during com-	1. Burner oriﬁce(s) is clogged or		1.	Clean burner oriﬁce(s) (see
bustion		damaged		Cleaning and Maintenance,
				page 15) or replace burner
				oriﬁce(s)
	2.	Burner damaged	2.	Replace burner
	3.	Gas regulator defective	3.	Replace gas regulator

116307-01B

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Contents Residential Models Garage Models What to do if YOU Smell GASTable of Contents Safety Information Unpacking Product FeaturesLocal Codes Determining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation Air From Inside Building Ventilation AIRInstallation Items InstallationCheck GAS Type Ventilation Air From OutdoorsLocating Heater Installing Heater to WallColdest part of room Attaching to wall stud Attaching to wall anchorMarking Screw Locations Connecting to GAS SupplyPlacing Heater On Mounting Screws Locate hardware packet behind left side door of heaterBe upstream from heater see Figure Protects it from freezing rain or sleet30,000 Btu/Hr Models 1/2 or greater Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Checking GAS ConnectionsTest Pressures In Excess Of 1/2 Psig 3.5 kPa Operating Heater For Your Safety Read Before LightingInstalling Refractory and Front Panel Turn control knob clockwise to the OFF position Lighting InstructionsInspecting Heater Manual Lighting ProcedureThermostat Control Operation Pilot Flame PatternODS/PILOT and Burner Cleaning MaintenanceBurner Pilot AIR Inlet CabinetContact local propane/LP gas company TroubleshootingObserved Problem Possible Cause Remedy Problem could be caused by Goes out when control knob is Control knob not pressedAssembly Delayed ignition of burners Manifold pressure is too lowDirty or partially clogged Clean burner see Cleaning Noise when burner is litWhen heated, vapors from Turn heater off when using Turn off air supplyService Publications Service Hints Technical ServiceWhen Gas Pressure Is Too Low Gas leak. See WarningLSF30NT, VSF30NT LSF30PT, VSF30PT SpecificationsSF30NT SF30PT Parts Central AccessoriesReplacement Parts Illustrated Parts Breakdown Parts List Keep this Warranty Warranty InformationModelos Modelos Para Cochera QUÉ Hacer SI Percibe Olor a GASTabla DE Contenido Información DE Seguridad Identificación DEL Producto Códigos LocalesDesempaque Características DEL ProductoCómo Procurar LA Ventilación Adecuada Aire Para Combustión VentilaciónConstrucción inusualmente sellada Espacio conﬁnado y no conﬁnadoAire del interior de la construcción para ventilación Aire Para VentilaciónVerifique EL Tipo DE GAS InstalaciónArtículos DE Instalación Aire del exterior para ventilaciónUbicación DEL Calentador En áreas con mucho viento oDoble en anclaje de pared como se muestra en la ﬁgura Instalación DEL Calentador EN LA ParedColocación del calentador en los tornillos de montaje Coloque el calentador en los tornillos de montajeVentila apuntando hacia abajo Conexión AL Suministro DE GASGas natural Revisión DE LAS Conexiones DE GASPruebas de presiones mayores a 1/2 PSI 3.5 kPa Instale el panel anterior y el refractario Abra la válvula de cierre del equipo consulte la ﬁguraInstalación del panel anterior y el refractario Instale un difusor frontal como se muestra en la ﬁguraNo intente encender ningún aparato Instrucciones DE EncendidoInspección DEL Calentador Funcionamiento DELLimpieza Y Mantenimiento Inspección DELEntrada DE Aire AL Piloto DEL Quemador Como se muestra en la ﬁguraCausa Posible Remedio Solución DE ProblemasBaja presión del gas Problema Observado Causa Posible RemedioEl termopar está dañado Presione totalmente la perilla de controlCierre el suministro de aire El problema desapareceráSe enciende o se apaga Silbante cuando el quemadorCuando la presión del gas de entrada sea muy baja Servicio TécnicoConsejos Para Servicio LSF30NT, VSF30NT EspecificacionesSF30NT Central DE Piezas AccesoriosPiezas DE Repuesto Clasificación Ilustrada DE Piezas Lista DE Piezas Guarde Esta Garantía Información DE Garantía