State Industries STC-074 specifications Test 11 Water Heater Shutting OFF below Setting, If… Then

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SBN TANK TYPE COMMERCIAL GAS WATER HEATER

SERVICE HANDBOOK

TEST 11 - WATER HEATER SHUTTING OFF BELOW SETTING

Conditions:

Main burner ignited

Stored water is below temperature setting more than 5° F (Tank Average).

Power off

Plug disconnected from heater control board receptacle E3 and E4

Red

Black Red

TEST 11

Water Temperature Circuit Check - Continuity

If…	...then
continuity check pin to pin of lower	see Test 4
temperature probe shows 1 or 0 (E4)	check wiring and plug connections to heater
	control board receptacle E4
	replace lower temperature probe
continuity check red wire pin to red wire pin	see Test 4
on upper temperature sensor shows 1 or 0	check wiring and plug connections to heater
(E3)	control board receptacle
	replace upper temperature probe
all above checks are okay	replace the water heater control.

©2003	36	Technical Training Department

Ashland City, Tennessee

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Contents Service Handbook Table of Contents SBN Service Handbook Introduction Custom Commercial Storage Tank Model Number Break Down QualificationsTop and Front Views of Minimum Clearances To Combustibles Installation ConsiderationsRequired Exterior Clearances Exterior ClearanceComb AIR Make-Up Air Direct Communication Not Direct Vent Make-Up Air Horizontal Ducts Make-Up Air Vertical DuctsAir for Combustion Flammable Items Contaminated AirGas Valve Outlet View Venting Atmospheric Multiple Heaters VentingNine Rules for Good Vents SBN Tank Type Commercial GAS Water Heater Service Handbook SBN Tank Type Commercial GAS Water Heater Service Handbook Multiple Gas Fired Tank-Type Heaters Type B GAS VentTechnical Dataventing Top View SequenceFront View of Water Heater SBN Tank Type Commercial GAS Water Heater Service Handbook HSI Integrated Ignition Control Board HSI Lower Front View of SBN Water HeaterECO Wiring DiagramElectrical Sequence of SBN Water Heater Operation PRE-SERVICE Checklist Water Heater Control Ignition Control Board ConditionsTest 2 Polarity Check Flash Codes of Diagnostic IndicatorTest 3 Continuity Check High Limit ECO Test 2 Polarity CheckTest 3 Continuity Check of High Limit ECO Test 4 Upper Temperature Probe Continuity CheckIs indicated Is not presentWater Heater Control Test 5 Calling for Heat no Inducer OperationCheck to Inducer Test on Ignition Board 4 Pin Receptacle E4 VAC Check of Blower Prover/Low Gas Pressure Circuit Test 6 Inducer ON-NO IgnitionVoltage is not present between E4, Pin Test of Igniter and gas valve circuit Test 8 Igniter Heats no Main BurnerContinuity Check Of Gas Valve Coil Test 9 Igniter Heats no Main BurnerFlame Prover Circuit Check Test 10 Main Burner Ignition for Less than 5 SecondsIf… Then Test 11 Water Heater Shutting OFF below SettingDisplay 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