Manuals / Vulcan-Hart / Household Appliance / Boiler

Vulcan-Hart VL2GPS, VL3GMS, VL2GMS, VL3GAS, VL2GAS, VL2GSS Gas Models Only, Symptom, Possible Causes

Models: VL2GPS VL3GPS VL3GSS VL2GSS VL2GAS VL3GAS VL2GMS VL3GMS

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GAS MODELS ONLY

VL SERIES STEAMER - TROUBLESHOOTING

GAS MODELS ONLY


	SYMPTOM		POSSIBLE CAUSES

	Burner won’t light.	1.	Gas not on.
		2.	Ignition control module reset switch in the OFF position or
			malfunctioning.
		3.	Ignition module not receiving power. Check ignition module
			transformer for 24VAC output to module on automatic
			ignition systems.
		4.	Steamer not properly grounded and/or polarity of incoming
			power is incorrect on automatic ignition systems.
		5.	Low incoming gas pressure. See “GAS MANIFOLD
			PRESSURE ADJUSTMENT” in “SERVICE
			PROCEDURES”.
		6.	Ignition module malfunction.
		7.	Gas combination control valve malfunction.
		8.	Boiler not filling. Check fill solenoid for power, clogging or
			malfunction.
		9.	Water level control malfunction. HL-3 relay not energizing
			or contacts not closing to power boiler fill solenoid.
		10.	Water too ”pure” for probes to properly conduct electricity.
		11.	High limit thermostat open (if equipped).
		12.	High limit pressure switch open.
		13.	Cycling pressure switch open or set too high. Steamer is
			cycling on high limit. See “CYCLING AND HI LIMIT
			PRESSURE SWITCHES (GAS AND ELECTRIC MODELS)
			in SERVICE PROCEDURES”.

	Burner won’t stay lit.	1.	Gas pressure low. See “GAS MANIFOLD PRESSURE
			ADJUSTMENT” in “SERVICE PROCEDURES”.
		2.	Check gas orifice for obstruction.
		3.	Ignition module malfunction.

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Vulcan-Hart VL2GPS, VL3GMS, VL2GMS, VL3GAS, VL2GAS, VL2GSS, VL3GSS, VL3GPS Gas Models Only, Symptom, Possible Causes

Contents

SERVICE MANUAL VL BOILER BASE SERIES CONVECTION STEAMERSTABLE OF CONTENTS Wiring Diagrams, Electric Heater Circuits Schematics, Gas Steamers, Boiler ControlsWiring Diagrams, Gas Steamers, Boiler Controls Schematics, Electric Steamers, Boiler ControlsGENERAL INTRODUCTIONWATER CONDITIONING Special SPECIFICATIONSTOOLS StandardPage 6 of VL SERIES STEAMERS - GENERALGas Steamers Electric SteamersRegenerated Steam Powered Boiler STEAMER OPERATIONGas Powered Steam Boiler Electrically Powered Steam Boiler4.Manual blowdown Direct Steam Powered CookerBoiler Blowdown and Steamer Shut off 3.Automatic blowdown3. Automatic 2. Standard4.Prevent CABINET BASE BOILER CONTROLS COMPONENT FUNCTIONHandhole Cover Assembly COOKING COMPARTMENT CONTROLS COMPONENT LOCATIONS REMOVAL AND REPLACEMENT OF PARTSPage 15 of Prevent Solid State WATER LEVEL GAUGE ASSEMBLYCYCLING AND HIGH LIMIT PRESSURE SWITCHES GAS AND ELECTRIC MODELSHIGH LIMIT THERMOSTAT BOILER ASSEMBLYGAS COMBINATION CONTROL VALVE PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELSGasket Door Screw NutDoor and Bushing REGENERATED STEAM MODELS HEATER CONTACTORSSTEAM COIL HEATING ELEMENTSBOILER SERVICE PROCEDURES AND ADJUSTMENTSDescaler Deliming Only Models with Deliming Port AssemblyWATER LEVEL CONTROLS TEST CYCLING AND HIGH LIMIT PRESSURE SWITCHES GAS AND ELECTRIC MODELSWater Level Probes COMPARTMENT PRESSURE ADJUSTMENT FILL AND COLD WATER SOLENOID VALVESDisassembly BOILER NOT FILLING WITH WATER BOILER BLOWDOWN DRAIN SOLENOID VALVEHIGH LIMIT THERMOSTAT 1.All Models With Boiler BOILER SLOW TO PRESSURIZEA. Newer Models B.Older Models4.Direct Steam Models INLET WATER STRAINERPILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS 3.Electric Models“PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS” in Check the thermocouple output voltage as followsPage 30 of Inspection GAS BURNERSAUTOMATIC IGNITION SYSTEMS GAS MODELS Air Shutter AdjustmentSpark Ignition Control Test TerminalsGAS MANIFOLD PRESSURE ADJUSTMENT HEATING ELEMENTS DIRECT STEAM MODELSREGENERATED STEAM OLDER MODELS HEATER CONTACTORSNUMBER 2.Older Models THERMAL SWITCH - PREVENT AND AUTOMATIC MODELSWATER LEVEL GAUGE ASSEMBLY 1.Newer ModelsSTEAM GATE VALVES WATER LEVEL CONTROLS ELECTRICAL OPERATIONSolid State - Auxiliary Low Level Cut-Off VL SERIES STEAMER - ELECTRICAL OPERATION Electro Mechanical - Auxiliary Low Level Cut-Off GAS MODELS SEQUENCE OF OPERATION4.Water reaches LL low level probe A.Power to terminal 9 on the water level controlA.Power to terminal 6 on water level control VL SERIES STEAMER - ELECTRICAL OPERATIONWater Refill After Initial Fill Cook CycleELECTRIC MODELS Boiler Blowdown/drainINITIAL FILL AND PREHEAT COOK CYCLE BOILER BLOWDOWN/DRAIN WATER REFILL AFTER INITIAL FILLPAGE PURPOSELY LEFT BLANK VL SERIES STEAMER - ELECTRICAL OPERATIONPage 48 of Manual Ignition, Standard Controls SCHEMATICS, GAS STEAMERS, BOILER CONTROLSVL SERIES STEAMER - ELECTRICAL OPERATION Electronic Ignition, Standard ControlsPage 50 of VL SERIES STEAMER - ELECTRICAL OPERATION Manual Ignition, CSD-1Code ControlsPage 51 of VL SERIES STEAMER - ELECTRICAL OPERATION Electronic Ignition, CSD-1Code ControlsPage 52 of Page 53 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 54 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 55 of VL SERIES STEAMER - ELECTRICAL OPERATIONVL SERIES STEAMER - ELECTRICAL OPERATION Electronic Ignition, Standard ControlsPage 56 of Page 57 of VL SERIES STEAMER - ELECTRICAL OPERATIONVL SERIES STEAMER - ELECTRICAL OPERATION Manual Ignition, CSD-1Code ControlsPage 58 of Page 59 of VL SERIES STEAMER - ELECTRICAL OPERATIONVL SERIES STEAMER - ELECTRICAL OPERATION Electronic Ignition, CSD-1Code ControlsPage 60 of Page 61 of VL SERIES STEAMER - ELECTRICAL OPERATIONAuto Blowdown, Standard Controls SCHEMATICS, ELECTRIC STEAMERS, BOILER CONTROLSVL SERIES STEAMER - ELECTRICAL OPERATION Auto Blowdown, Cal-CodeControlsPage 63 of Page 64 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 65 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 66 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 67 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 68 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 69 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 70 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 71 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 72 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 73 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 74 of VL SERIES STEAMER - ELECTRICAL OPERATIONPage 75 of VL SERIES STEAMER - ELECTRICAL OPERATIONStandard and Cal-Code/CSD-1Controls WIRING DIAGRAMS, ELECTRIC HEATER CIRCUITSPage 77 of VL SERIES STEAMER - ELECTRICAL OPERATIONVL SERIES STEAMER - ELECTRICAL OPERATION Manual Blowdown Older ModelsPage 78 of VL SERIES STEAMER - ELECTRICAL OPERATION Auto Blowdown Older ModelsPage 79 of VL SERIES STEAMER - ELECTRICAL OPERATION PreventPage 80 of VL SERIES STEAMER - ELECTRICAL OPERATION AutomaticPage 81 of VL SERIES STEAMER - ELECTRICAL OPERATION StandardPage 82 of VL SERIES STEAMER - ELECTRICAL OPERATION ManualPage 83 of POSSIBLE CAUSES TROUBLESHOOTINGSYMPTOM ALL MODELSSYMPTOM VL SERIES STEAMER - TROUBLESHOOTINGPOSSIBLE CAUSES SYMPTOM VL SERIES STEAMER - TROUBLESHOOTINGPOSSIBLE CAUSES GAS MODELS ONLY SYMPTOMPOSSIBLE CAUSES VL SERIES STEAMER - TROUBLESHOOTING