State Industries STC-074 specifications Test 8 Igniter Heats no Main Burner

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SBN TANK TYPE COMMERCIAL GAS WATER HEATER

SERVICE HANDBOOK

TEST 8 - IGNITER HEATS – NO MAIN BURNER

Conditions:

Plugs in receptacle

Igniter energizes (gets red)

No main burner or main shuts off within 5 seconds.

Note flash code of LED.

Pin 9

Pin 12

24	24

E1 Plug, Pin 9	E1 Plug, Pin 12
Plug in Receptacle	Plug in Receptacle

TEST 8

Test of Igniter and gas valve circuit

If…	...then
short heat up time of igniter	• check control box grounding
	• check for 24V from E1, Pin 12 to ground during 4
normal (Approximate 20 seconds)	second trial.
warm up - no ignition	- Yes - Continue
	- No - Replace Igntion Board
no voltage present E4, Pin 12 to	replace ignition board
ground
24 Volt was present from E1, Pin	• check that air has been purged from gas circuit
12 to ground, but no main burner	• check that wiring and connections to gas valve and
	E1, Pin 9 are correct
	• check for 24 VAC at E1, Pin 9 to ground during 4
	second trial

Technical Training Department	33	©2003
	33

Ashland City, Tennessee

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Contents Service Handbook Table of Contents SBN Service Handbook Introduction Qualifications Custom Commercial Storage Tank Model Number Break DownInstallation Considerations Top and Front Views of Minimum Clearances To CombustiblesExterior Clearance Required Exterior ClearancesComb AIR Make-Up Air Direct Communication Not Direct Vent Make-Up Air Vertical Ducts Make-Up Air Horizontal DuctsContaminated Air Air for Combustion Flammable ItemsGas Valve Outlet View Venting Venting Atmospheric Multiple HeatersNine Rules for Good Vents SBN Tank Type Commercial GAS Water Heater Service Handbook SBN Tank Type Commercial GAS Water Heater Service Handbook Type B GAS Vent Multiple Gas Fired Tank-Type HeatersTechnical Dataventing Sequence Top ViewFront View of Water Heater SBN Tank Type Commercial GAS Water Heater Service Handbook HSI Integrated Ignition Control Board Lower Front View of SBN Water Heater HSIWiring Diagram ECOElectrical Sequence of SBN Water Heater Operation PRE-SERVICE Checklist Conditions Water Heater Control Ignition Control BoardFlash Codes of Diagnostic Indicator Test 2 Polarity CheckTest 2 Polarity Check Test 3 Continuity Check High Limit ECOIs indicated Test 4 Upper Temperature Probe Continuity CheckTest 3 Continuity Check of High Limit ECO Is not presentWater Heater Control Test 5 Calling for Heat no Inducer OperationCheck to Inducer Test on Ignition Board 4 Pin Receptacle E4 Test 6 Inducer ON-NO Ignition VAC Check of Blower Prover/Low Gas Pressure CircuitVoltage is not present between E4, Pin Test 8 Igniter Heats no Main Burner Test of Igniter and gas valve circuitTest 9 Igniter Heats no Main Burner Continuity Check Of Gas Valve CoilTest 10 Main Burner Ignition for Less than 5 Seconds Flame Prover Circuit CheckTest 11 Water Heater Shutting OFF below Setting If… ThenDisplay Lights on Integrated Heater Control ECO SBN Tank Type Commercial GAS Water Heater Service Handbook Technical Training Department 120 154 180 199 200A 250A 275A 310A 366A 400A General Questions and Answers SBN Tank Type Commercial GAS Water Heater Service Handbook Draft Proving Pressure Switch Table