American Water Heater ITCE3-52/80/119 manual Status Icons, Electronic Control System, Description

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Table 1 Status Icons

ELECTRONIC CONTROL SYSTEM

Table 1 Status Icons

 

ICON

 

DESCRIPTION

 

 

 

 

 

 

 

Water temperature in the tank has fallen. Shaded area of the animated thermometer icon

 

 

 

will rise and fall in response to water temperature in the storage tank as sensed from the

 

 

 

immersion Temperature Probe.

 

 

 

 

 

 

 

Water temperature in the tank has reached the Operating Set Point. Shaded area of the

 

 

 

animated thermometer icon will rise and fall in response to water temperature in the

 

 

 

storage tank as sensed from the immersion Temperature Probe.

 

 

 

 

 

 

 

The control is unable to initiate a heating cycle. This will happen whenever a Fault

 

 

 

condition is detected by the control system or when either of the two Enable/Disable

 

 

 

circuits are open circuits. For more information on Enable/Disable circuits see page 45

 

 

 

and the Heater Status Menu information on page 54.

 

 

 

 

 

 

 

The control system is in Heating Mode and has energized the electromagnetic contactor

 

 

 

coils for at least one bank of heating elements. This animated icon DOES NOT indicate

 

 

 

current has been sensed from the heating elements, only that there is a call for heat

 

 

 

present and the control system has initiated heating element operation.

 

 

 

 

 

 

 

Heating elements icon for a water heater equipped with 1 Bank of heating elements.

 

 

 

Each circle represents one heating element. Each diagonal row of 3 elements = 1 Bank

 

 

 

of elements. Open circles represent heating elements the control system has not

 

 

 

energized and is not sensing electrical current from.

 

 

 

Heating elements icon for a water heater equipped with 2 Banks of heating elements.

 

 

 

Each circle represents one heating element. Each diagonal row of 3 elements = 1 Bank

 

 

 

of elements. Open circles represent heating elements the control system has not

 

 

 

energized and is not sensing electrical current from.

 

 

 

 

 

 

 

Heating elements icon for a water heater equipped with 3 Banks of heating elements.

 

 

 

Each circle represents one heating element. Each diagonal row of 3 elements = 1 Bank

 

 

 

of elements. Open circles represent heating elements the control system has not

 

 

 

energized and is not sensing electrical current from.

 

 

 

 

 

 

 

Heating elements icon for a water heater equipped with 3 Banks of heating elements.

 

 

 

Each circle represents one heating element. Each diagonal row of 3 elements = 1 Bank

 

 

 

of elements. Filled circles represent heating elements the control system has energized

 

 

 

AND is sensing electrical current from.

 

 

 

Heating elements icon for a water heater equipped with 3 Banks of heating elements.

 

 

 

Each circle represents one heating element. Each diagonal row of 3 elements = 1 Bank

 

 

 

of elements. Open circles with an X represent heating elements the control system has

 

 

 

energized that it IS NOT sensing electrical current from.

 

 

 

 

 

 

 

Heating elements icon for a water heater equipped with 3 Banks of heating elements. In

 

 

 

this example 2 Banks (6 elements) have been energized and 3 elements have not. The

 

 

 

control system is sensing electrical current from 4 heating elements. The control system

 

 

 

is reporting that it is not sensing electrical current from 2 elements that it should be

 

 

 

sensing current from. The control system would declare an Alert Condition in this case.

 

 

 

 

 

 

 

The control has detected/declared a Fault Condition. Fault message details can be

 

 

 

viewed in the Current Fault menu. Heating operation is discontinued (locked out) until

 

 

 

the condition that caused the fault is corrected. Power to the water heater must be cycled

 

 

 

off and on to reset the control system. Note; cycling power will not reset the control

 

 

 

system if the condition that caused the fault has not been corrected.

 

 

 

The control has detected/declared an Alert Condition. The water heater will continue to

 

 

 

operate during an Alert Condition but there is an operational condition that requires the

 

 

 

attention of a Qualified Service Agent. Alert message details can be viewed in the

 

 

 

Current Alert menu.

 

 

 

 

 

 

 

 

 

 

Servicing should only be performed by a Qualified Service Agent

 

 

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Contents Service Handbook COMMERCIAL ELECTRIC WATER HEATERSMODELS STCE3-52/80/119 & ITCE3-52/80/119 Technical Support and PartsPage SERVICE MANUAL TABLE OF CONTENTSCOMMERCIAL ELECTRIC WATER HEATER QUALIFICATIONS - QUALIFIED SERVICE AGENT SERVICE WARNINGIMPORTANT SERVICE REMINDER INTRODUCTIONINSTRUCTION MANUAL TOOLS REQUIREDCLOSED WATER SYSTEMS INSTALLATION CONSIDERATIONSTHERMAL EXPANSION ELECTRICAL REQUIREMENTS Power SupplyGrounding WIRING CONNECTIONS PRE SERVICE CHECKSSERVICE PRECAUTIONS HEATING ELEMENT CONFIGURATIONS WATER HEATER CONSTRUCTIONSURFACE MOUNT CONTROL MODELS ELECTRONIC CONTROL MODELSSURFACE MOUNT CONTROL MODELS WATER HEATER CONSTRUCTIONELECTRONIC CONTROL MODELS OPERATION & SERVICE PRINCIPLES OF ELECTRICITYVoltage AmperageOhms Law Ohms Law applied to “SINGLE PHASE” 1Ø powerCalculating Amps/Ohms/Volts/Watts SINGLE AND THREE PHASE POWER L1 L2 L3Checking Single Phase 1Ø Power Checking Three Phase 3Ø Power 1 L1 and L2 terminals of the water heater’s Power Distribution Block2 L2 and L3 terminals of the water heater’s Power Distribution Block 3 L1 and L3 terminals of the water heater’s Power Distribution BlockSurface Mount Control Models Three Phase to Single Phase PHASE CONVERSIONS - SURFACE MOUNT CONTROL MODELSSurface Mount Control Models Single Phase to Three Phase Electronic Control Models Three Phase to Single Phase PHASE CONVERSIONS - ELECTRONIC CONTROL MODELSElectronic Control Models Single Phase to Three Phase Ohm Meter Method FUSESVolt Meter Method SURFACE MOUNT THERMOSTATS Thermostat & ECO Test Heating Element Construction HEATING ELEMENTSWire conductor inside tube Heating Element Configurations NUMBER OF FACTORY INSTALLEDHeating Element Ratings TOTALHeating Element Amperage ELEMENTAPPROXIMATE CURRENT - AMPS 208 VACHeating Element Amperage Test Heating Element Voltage Test Heating Element Resistance & Ground Tests Measuring ResistanceHeating Element Ground Test Replacing Heating ElementsELEMENT SENSORS Element Sensor ConstructionElement Sensor Three Current Sensors Element Sensor FunctionsElement Sensor Operation CONTACTORS Contactor Construction - How They WorkContactor Configurations Power Connection TerminalsElement Numbers/Connections Wire Colors to Elements ContactorsContactor Inspection Physically Operate MechanicalContactor Coil Voltage - At Contactor Contactor Coil Voltage - At CCB 120 VAC Control Circuit Transformer Wiring X1 120 VACTRANSFORMERS H1 H2 H3 H4 H5 N/A Primary Winding Secondary WindingPrimary Winding Voltage Test 120 VAC Control Circuit Transformer TestSecondary Winding Voltage Test 24 VAC Transformer Test IMMERSION TEMPERATURE PROBE ECO High Temperature Limit SwitchTemperature Sensor Temperature Sensor Resistance Test Temperature Sensor Resistance DataChecking Temperature Sensor Resistance WATER TEMPERATURETemperature Sensor DC Voltage Test ECO Continuity TestChecking ECO Switch Continuity DC Voltage To Temperature SensorECO Voltage Test 120 VAC To ECO120 VAC From ECO Ground ConnectionELECTRONIC CONTROLS UIM User Interface Module CCB Central Control BoardCCB - CENTRAL CONTROL BOARD CCB Socket & Wiring Terminal Identification J2 Socket - 120 VAC Power SupplyJ3 Wiring Terminals - Alarm Output Relay see page J4 Wiring Terminals - Contactor CoilsJ7 Socket - Enable / Disable Circuits 1 & 2 see pages 45 J16 Socket - Not Used J17 Wiring Terminals - Not UsedJ8 Socket - Not Used J9 Socket - Not Used J10 Socket - Not Used J13 Socket - Heating Element Sensors BankCCB Enable/Disable Circuits Test Checking for 120 VAC Checking Power and Ground To The CCBChecking for Ground Service Notes - Button Pad Ribbon Cable UIM - USER INTERFACE MODULEUIM Circuit Board Back UIM Circuit Board FrontCONTROL SYSTEM FEATURES ELECTRONIC CONTROL SYSTEMCONTROL SYSTEM NAVIGATION UIM - User Interface ModuleTHE DESKTOP SCREEN Table 1 Status Icons ICONTable 2 - Operating States Table 3 - Control System MenusSTATE MENUS†Differential Settings TEMPERATURES MENUOperating Set Point Tank TemperatureTemperature Settings Enable / Disable 1 Alarm ConditionAlarm Relay Output HEATER STATUS MENUECONOMY MODE SETUP MENU Setpoint AdjustmentDesktop Screen During Economy Mode Economy Mode Setup Menu Current TimeEconomy Mode Settings Setpoint Adjustment Value Economy Mode Settings Time Clock Settings Economy Mode All Day Economy Mode Settings Daily Operating Mode SettingsNormal Operation Between ALARM OUTPUT SETUP MENU Temp Alarm SP Used for externalAlarm SP Alarm Output SettingsDISPLAY SETTINGS MENU Display SettingsTemperature Units Backlight DelayHEATER INFORMATION MENU Elapsed TimeTotal Heating Time Bank # CyclesCURRENT FAULT / ALERT MENU FAULT HISTORY MENUFAULT OCCURRENCE MENU Main Menu - Current Fault Selected Fault History MenuRestore Factory Defaults RESTORE FACTORY DEFAULTS MENUFactory Default User Settings TROUBLESHOOTING COMMON SERVICE PROBLEMSNo Hot Water Not Enough Hot WaterFault Conditions Resetting Control SystemCONTROL SYSTEM UNRESPONSIVE Alert ConditionsControl System Unresponsive cont Heating Cycle DisabledUIM is Inoperable FAULT AND ALERT MESSAGES “No Current Detected”“Temp Probe Open” Fault & Alert Messages“Temp Probe Short” “Energy Cut Out ECO” Page Page Page Page Technical Support and Parts
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