Manuals / A.O. Smith / Household Appliance / Water Heater

A.O. Smith 28 30 50 60 Error F09 remains active in the event that the water, F10 lock out error

Models: 28 30 50 60

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Warning

Maintenance may only be performed by a qualified service and maintenance engineer.

Table 10.2 Displayed errors (Sheet 7 of 10)

is

Code + Description	Possible cause		Solution			Remark

F09 (lock out error)	Temperature at the top		1.	Check that the circulation pump (if present) is working.		If the error cannot be resolved or is persistent, contact your
Water temperature	of the tank exceeds		2.	Check the position of the temperature sensor T1.		installer.
Water temperature	93°C.		2.	Check the position of the temperature sensor T1.
protection.	93°C.		3.	Reset the water heater controller.
protection.


			n Remark
				Error “F09” remains active in the event that the water
				temperature during a reset was higher than 78 oC. If this is the
				case, first draw water off by opening the nearest hot water tap,
				so that cold water can flow in.


F10 (lock out error)	Pressure switch not		1.	Check the running speed of the fan. See ’8.7.4 Displaying		If the error cannot be resolved or is persistent, contact your
Restriction on number	closing.			appliance specifications’.		installer.
Restriction on number			2.	Check that the hoses on the pressure switch and the air supply		To replace the necessary parts, you must contact your installer.
of ignition attempts
of ignition attempts
based on pressure				hose between fan and burner are correctly fitted. Refit these if
switch state changes.				necessary.
			3.	Check for cracks in the hoses on the pressure switch and the
				air supply hose between fan and burner. If necessary, replace
				the hoses.
			4.	Check whether the flue gas discharge is compliant with
				Table 3.8.
			5.	Check for blockage in the flue gas discharge. Remove any
				blockage that may be present.
			6.	Check for blockage in the condensation water discharge.
				Remove any blockage that may be present.
			7.	Measure the pressure differential across the pressure switch.
				Table 12.1. If there is insufficient pressure differential, clean the
				heat exchanger. If the pressure differential is acceptable, check
				that the pressure switch is closing, using a multimeter.
			8.

Release R.1.3 UK

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A.O. Smith 28 30 50 60 service manual Error F09 remains active in the event that the water, F10 lock out error

Contents

Release R.1.3 UK Your installer More information CopyrightTrademarks LiabilityPage Gis Table of contentsStarting up and shutting down Filling and drainingControl panel Status of the applianceMaintenance Service programTroubleshooting Maintenance frequencyIndex AppendicesWhat to do if you smell gas Regulations IntroductionAbout the appliance Introduction Target groups Maintenance Forms of notationSymbol Target group RemarkChapter Target groups Description Overview of thisDocument Overview of this documentGis Introduction Functional description of the appliance Functioning of the applianceIntroduction Pressure switch Ionisation rod Water temperature protection Gas controlAppliance’s heating cycle Protection for the appliance 3 Fan Water temperature protectionPressure switch Gas controlIonisation rod Safety of the instal- lationUnvented installation Vented installationIntroduction Packaging Environmental conditions InstallationWorking clearances Humidity and ambient temperatureMaximum floor loading Water compositionWorking clearances Environmental conditionsPlan and elevation of the appliance Technical specificationsUnit BFC DimensionsTechnical specifications Dime Description BFC NsionVAC G30-30 mbar butane Installation diagramGas data GeneralUnvented InstallationCondensation drainage Water connections, Unvented Cold water sideHot water side Circulation pipeSee din Figure Water connections, VentedGas connection See paragraph ’3.6.4 Condensation drainage’Air supply and flue gas discharge Dimension BFCAir supply and flue gas discharge Concentric wall flue terminal Specification DescriptionConcentric roof flue terminal Concentric roof flue terminal specificationsPreparation Electrical connectionPreparation Mains voltage Electrical connection Mains voltageProgram-controlled pump Extra on mode switch Tank onIsolating Transformer Continuous pumpAppliance Connecting extra error signal Alarm OUTChecking the supply Pressure and burner Checking the supply pressure and burner pressureMain menu Conversion to a different gas category Conversion to a different gas categoryRemove the burner as complete assembly Check the burner and supply pressure see paragraph 13 Conversion of gas controlInstallation Filling the appliance Filling the appliance Filling unvented installationsFilling vented installations Filling and drainingFilling and draining Installation diagrams F d cDraining the appliance Draining unvented installationsDraining vented installations Draining the applianceGis Introduction Operating Control panelControl panel Explanation of the icons ON/OFF switch of ThermoControlNavigation buttons PC connectionStatus of the appliance Operating modes Error conditions Service conditionIntroduction Operating modes Status of the appliance Error conditionsService condition Service conditionGis Shutting down Open the gas valve see ’ .1 Installation diagrams’Starting up and shutting down Introduction Starting upStarting up and shutting down Shut the appliance down for a brief period OFF modeDisconnect the appliance from the mains Shut the appliance down for a longer periodAppliance’s heating cycle Appliance’s heating cycle12 Ignition Notational convention for menu-related instructions Main menuSetting the water temperature via Setpoint Menu Switching into on mode Setting the water temperatureSetting water temperature during on mode Starting up and shutting down the week program Week programme IntroductionChanging the appliance’s standard week program Remark Setting switch-off time Setting the switch-on timeExample Week programme Setting the water temperatureSetting program-controlled pump Adding times to a week program20 Period added Deleting times from a week program23 week program options Programming an extra period Extra periodSetting menu language SettingsSettings Displaying appliance specifications Remark Setting day and time46 Main menu Gis Setting the hysteresis Service programDisplaying the error history Displaying the appliance history Setting the pump on/offSetting the service interval Service programSetting the display contrast Setting the display contrastSetting the backlight time Setting the display scroll speedService program General errors TroubleshootingDisplayed errors Symptom Cause Solution Remark Gas smell Gas leak Troubleshooting table for general errorsSee appendix ’A.2 Electrical diagram BFC’ Symptom Cause Solution Remark Display is offWater leakage Water Troubleshooting table for displayed errorsSymptom Cause Solution Remark Explosive ignition Insufficient or no hotS05 blocking error S02 blocking errorS03 blocking error S04 blocking errorS14 blocking error S13 blocking errorS15 blocking error F02 lock out error Phase-sensitive. See ’3.10 Electrical connection’Appliance specifications’ How to bleed air from the gas line, and measure the supply ’3.9 Air supply and flue gas discharge’ F06 lock out errorF07 lock out error F08 lock out errorF10 lock out error Error F09 remains active in the event that the waterRelease R.1.3 UK Release R.1.3 UK E04 blocking error C04 blocking errorE01 blocking error E03 blocking errorDetermining service interval Maintenance frequencyMaintenance frequency Remark Preparation for maintenance MaintenanceStarting up Maintenance Water-side mainte- nance Introduction Descaling and cleaning the tankCleaning condensation water discharge Cleaning the burnerRemark Finalising mainte- nance Cleaning the orificeCleaning heat exchanger 12.4.3Warranty Certificate Warranty Certificate Week program card AppendicesAppendices Electrical diagramWeek program card Release R.1.3 UK Index IX IndexIX Index 0306