State Industries SUF-130- 300/400/500 instruction manual Fault And Alert Conditions

Page 57

Colder incoming water temperature lengthening the time required to heat water to desired temperature.

Hot water piping leaks, open faucets, water heater drain valve leaking or open.

Sediment or lime scale accumulation may be affecting water heater operation. See Maintenance on page 57 for sediment and lime scale removal procedures.

Water heater not firing at full input rating. Check manifold gas pressure, see instructions on page 57. Check actual firing rate of the water heater, see instructions on page 57.

Water Is Too Hot

Operating Set Point is set too high. See Operating Set Point And Differential Adjustment on page 57.

Upper and/or Lower Probe Offset settings improperly set - see Temperatures Menu (cont) on page 57.

Improper water piping - see diagrams beginning on page 57.

Noisy Operation

Sediment or lime scale accumulations can cause rumbling and pounding noises during heating cycles. See the Maintenance section of this manual beginning on page 57 for sediment and lime scale removal procedures.

Normal operating noise of electrical components; Combustion Blower, transformer hum, relay contact closure.

Water Leakage Is Suspected

Ensure the water heater drain valve is tightly closed.

Check cleanout opening for leaks - see Figure 4 on page 57.

Check inlet/outlet water connections and system piping.

Check the Temperature-Pressure Relief Valve.

Excessive water temperature.

Excessive water pressure.

Defective Temperature-Pressure Relief Valve.

Note: Excessive water pressure is the most common cause of Temperature-Pressure Relief Valve leakage. Excessive water system pressure is most often caused by "thermal expansion" in a "closed system." See Thermal Expansion and Closed Water Systems on page 57. The Temperature-Pressure Relief Valve is not intended for the constant relief of thermal expansion.

Temperature-Pressure Relief Valve leakage due to pressure build up in a closed system that does not have a thermal expansion tank installed is not covered under the limited warranty. Thermal expansion tanks must be installed on all closed water systems.

Replacement Parts

Replacement parts may be ordered from the manufacturer, authorized service agencies or distributors. When ordering parts be sure to have the complete water heater Model Number, Serial Number and Series Number available. This information can be found on the rating label affixed to the water heater.

Refer to the parts list included with the water heater from the factory for more information or call the parts department or technical support phone number listed on the back cover of this manual for further assistance.

Fault And Alert Conditions

Fault Conditions

When the control system declares a Fault condition it will display a Fault message on the control system's LCD with an exclamation "!" mark. The control system will lock out and disable heating operation until the condition is corrected. The water heater must

be serviced by a qualified service agent before operation can be restored.

Alert Conditions

When the control system declares an Alert condition it will display an Alert message on the control system's LCD with a question "?" mark. The water heater will continue to operate during an Alert condition but the water heater must be serviced by a qualified service agent as soon as possible.

Resetting Control System Lock Outs

To reset the control system from a lock out condition; turn the power supply off for approximately 20 seconds and then back on. Keep in mind; if the condition that caused the Fault has not been corrected, the control system will continue to lock out.

Diagnostic Checks

Electrical Shock Hazard

Turn off power to the water heater before performing any service.

Label all wires prior to disconnecting when performing service. Wiring errors can cause improper and dangerous operation.

Verify proper operation after servicing.

Failure to follow these instructions can result in personal injury or death.

The following section, Fault And Alert Messages on page 57, lists some of the messages the control system will display on the LCD when there are operational problems. This is not a complete list. Along with each of the Fault and Alert messages described there will be a list of possible causes and things to check and repair.

Only qualified service agents, as defined in Qualifications on page 57, using appropriate test equipment, should perform any service procedures on the water heater.

Note: If you are not qualified and licensed or certified as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the diagnostic or service procedures described in the following section.

If you do not understand the instructions in the following section do not attempt to perform any procedures.

Call the technical support phone number listed on the back cover of this manual for further technical assistance or to locate a qualified service agent in your area.

Jumping out control circuits or components can result in property damage, personal injury or death.

Service should only be performed by a qualified service agent using proper test equipment.

Altering the water heater controls and/or wiring in any way could result in permanent damage to the controls or water heater and is not covered under the limited warranty.

Altering the water heater controls and/or wiring in any way could result in altering the ignition sequence allowing gas to flow to the main burner before the hot surface igniter is at ignition temperature causing delayed ignition which can cause a fire or explosion.

Any bypass or alteration of the water heater controls and/or wiring will result in voiding the appliance warranty.

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Contents Commercial gas water heaters Table Of Contents Safe Installation, Use and Service ANSI/NSF-5Optional Precautions General Safety InformationHydrogen Gas Flammable Overheated water can cause water tank explosionFire and Explosion Hazard Installing, using or servicing Water heaterIntroduction Preparing For The InstallationAbbreviations Used QualificationsBasic Operation Features And ComponentsWater Heater’s 120 VAC on/off switch Top ViewTop View Components Side Views Rough In Dimensions Installation ConsiderationsRecovery Capacities Gas Line Connection SizeLocating The Water Heater Service ClearanceClearance To Combustible Materials Intake Air and Vent Pipe ClearancesOptional Concentric Terminations Extended Vent TerminationsHard Water Circulation PumpsPower Supply Installation RequirementsGas Pressure Requirements Supply Gas LineDishwashing Machines Mixing ValvesClosed Water Systems Thermal ExpansionValve Discharge Pipe Requirements Temperature-Pressure Relief ValveCombustible Material Storage Condensate DrainContaminated Air Condensate Drain Water TrapAir Requirements Unconfined SpaceConfined Space Outdoor Air Through Two Openings Fresh Air Openings For Confined SpacesOutdoor Air Through One Opening Outdoor Air Through Two Horizontal DuctsPage Inspection Commonwealth of MassachusettsVenting Installation General Venting InformationGeneral Venting Instructions Venting Requirements Venting Installation Sequence Power Vent InstallationDirect Vent Installation 3 Reducer Vertical Termination InstallationVertical Termination Direct Vent Sidewall Termination Installation Inch Concentric Termination Flat Roof Clearance Concentric Termination InstallationInch Concentric Termination KIT Inch Concentric Termination InstallationInch Concentric Termination Sidewall Installation Three Concentric Terminations TWO Concentric TerminationsFour Concentric Terminations Eight Concentric TerminationsMultiple Concentric Termination Arrangements Two Concentric TerminationsEight Concentric Terminations Power Vent Horizontal Venting ArrangementsDirect Vent Horizontal Direct Vent Vertical Vent Horizontal Intake Direct Vent Horizontal Vent Vertical IntakeDirect Vent Horizontal Concentric Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentCondensate Drain Installation Water Heater InstallationInstallation Notes Installation InstructionsGas Line Sizing Supply Gas Line InstallationSupply Gas Line Sizing U. S. Units Supply Gas Line Sizing Metric UnitsSupply Gas Regulator Installation Gas Line Leak TestingGas Line Connection Power Supply Connections Electrical WiringEnable/Disable Circuit Connecting An External Supervisory ControlWater Line Connections Water Piping DiagramsValve Discharge Pipe Thermometers not SuppliedHigh Temperature Limit Control ECO Temperature RegulationHigh Temperature Applications Thermostat ControlOverview Control System OperationControl System Navigation User Input ButtonsIcon Description Status IconsState Description Operating StatesControl System Menus Menu DescriptionUpdate Cancel User Settings & Control System MenusBack Help Description/Action DisplayChange Back Help Heater Information Description/Action Display Display Settings Description/ActionView Back Help Back AdvancedECO YESService Contact Information UpdateSelect Back Help NameStart Up Prior to Start upInitial Start Up Supply Gas Pressure Adjustment Multiple Appliance InstallationsManifold Gas Pressure Adjustment Checking The Firing Rate High Altitude Installations1050 = 300,000 Btu/hr 87.9 kW To Turn Off GasLighting The Water Heater Lighting & Operation LabelHoneywell Troubleshooting Installation ChecklistSequence Of Operation Closed by control system Fault Msg is displayed Sequence Of Operation Flow ChartPre-Purge cycle Water is heated to VAC Gas ValveInstallation Errors Operational ProblemsRough Starting, Rough Operation Momentary IgnitionFault And Alert Conditions Possible Causes Check/Repair Displayed Fault/Alert Message Fault And Alert MessagesNo Anode Voltage Blower Prover FailureMaintenance Schedule MaintenanceGeneral Draining And FlushingFilling The Water Heater Sediment RemovalLime Scale Removal Drain Valve and Access Panels Powered Anode RodsTemperature-Pressure Relief Valve Test Vent SystemCCB Central Control Board Layout DiagramsUser Interface Modul SUF 130 300 Wiring DiagramUser SUF 130 400, 500 Wiring DiagramCirculation Pump Wiring Diagrams Water Piping Diagrams Temperature & Pressure Tank Temperature ALT. Cold Water State Storage Tank Water Piping Diagrams Line Temperature Control HOT Water Outlet Pipe T&P to Open Drain Finished Floor Limited Warranty