A.O. Smith 28 30 50 60 service manual C04 blocking error, ’9.5 Display the selected appliance’

Page 82

Warning

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

Table 10.2 Displayed errors (Sheet 10 of 10)

is

Code + Description

Possible cause

Solution

Remark

 

 

 

 

C03 (blocking error)

Too many resets in too

Wait for the error to disappear (maximum 1 hour). If the error does

To replace the necessary parts, you must contact your installer.

Reset error.

short a period.

not disappear, the water heater controller must be replaced.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C04 (blocking error)

Incorrect appliance

1.

Check whether the correct appliance has been selected. See

If the error does not disappear, you must contact your installer.

Appliance selection

selection /

 

’9.5 Display the selected appliance’.

To obtain a selection resistor, you must contact your installer.

error.

Incorrect selection

2.

If the correct appliance is selected, fit the correct selection

 

 

resistor.

 

resistor.

 

 

 

 

 

 

 

3.

If incorrect appliance selected, select the correct one.

 

 

 

 

 

E01 (blocking error)

The temperature of the

None. This is a temporary message that may appear from time to

 

The temperature

water at the top of the

time, but will disappear automatically.

 

tank is > 85°C.

 

 

 

protection at the top of

 

 

 

the tank has been

 

 

 

 

 

 

 

 

activated.

 

 

 

 

 

 

 

 

 

 

 

 

 

E03 (blocking error)

The temperature

1.

Check sensor position and wiring.

To replace the necessary parts, you must contact your installer.

Error in temperature

differential between

2.

Reset the ThermoControl if necessary. Replace the sensor if

 

the two temperature

 

sensor T1 at the top of

 

the error persists.

 

sensors in the tank is >

 

 

the tank.

 

 

 

 

 

 

 

 

 

 

 

10°C over a period of

 

 

 

 

 

 

 

 

60 seconds or longer.

 

 

 

 

 

 

 

 

E04 (blocking error)

The two dummy

1.

Check wiring from dummy 1 and dummy 2.

To replace the dummy sensor you must contact your installer.

Error in the dummy

sensors detect a

2.

Reset ThermoControl if necessary. Replace the dummy sensor

 

differential of > 10°C

 

sensor(2).

 

if the error persists.

 

 

 

 

 

 

 

 

over a period of 60

 

 

 

seconds or longer.

 

 

 

 

 

 

 

 

 

 

 

 

1.Temperature sensor T1 is a ‘2 in 1’ sensor, T1 contains 2 NTCs for the high-limit thermostat and safety thermostat protection.

2.The dummy sensor consists of dummy sensor 1 and dummy sensor 2

3.The dummy sensor consists of dummy sensor 1 and dummy sensor 2

Release R.1.3 UK

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Contents Release R.1.3 UK Your installer Liability CopyrightTrademarks More informationPage Table of contents GisStatus of the appliance Filling and drainingControl panel Starting up and shutting downMaintenance frequency Service programTroubleshooting MaintenanceAppendices IndexWhat to do if you smell gas Regulations IntroductionAbout the appliance Remark Target groups Maintenance Forms of notationSymbol Target group IntroductionOverview of this document Overview of thisDocument Chapter Target groups DescriptionGis 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 Gas control Water temperature protectionPressure switch 3 FanVented installation Safety of the instal- lationUnvented installation Ionisation rodInstallation Introduction Packaging Environmental conditionsWater composition Humidity and ambient temperatureMaximum floor loading Working clearancesEnvironmental conditions Working clearancesTechnical specifications Plan and elevation of the applianceDime Description BFC Nsion DimensionsTechnical specifications Unit BFCVAC General Installation diagramGas data G30-30 mbar butaneInstallation UnventedCirculation pipe Water connections, Unvented Cold water sideHot water side Condensation drainageSee paragraph ’3.6.4 Condensation drainage’ Water connections, VentedGas connection See din FigureAir supply and flue gas discharge Dimension BFCAir supply and flue gas discharge Specification Description Concentric wall flue terminalConcentric roof flue terminal specifications Concentric roof flue terminalPreparation Electrical connectionPreparation Mains voltage Mains voltage Electrical connectionContinuous pump Extra on mode switch Tank onIsolating Transformer Program-controlled pumpChecking the supply pressure and burner pressure Connecting extra error signal Alarm OUTChecking the supply Pressure and burner ApplianceMain menu Conversion to a different gas category Conversion to a different gas categoryRemove the burner as complete assembly 13 Conversion of gas control Check the burner and supply pressure see paragraphInstallation Filling and draining Filling the appliance Filling unvented installationsFilling vented installations Filling the applianceInstallation diagrams F d c Filling and drainingDraining the appliance Draining unvented installationsDraining vented installations Draining the applianceGis Control panel Introduction OperatingPC connection Explanation of the icons ON/OFF switch of ThermoControlNavigation buttons Control panelStatus of the appliance Operating modes Error conditions Service conditionIntroduction Operating modes Error conditions Status of the applianceService condition Service conditionGis Introduction Starting up Open the gas valve see ’ .1 Installation diagrams’Starting up and shutting down Shutting downShut the appliance down for a longer period Shut the appliance down for a brief period OFF modeDisconnect the appliance from the mains Starting up and shutting downAppliance’s heating cycle Appliance’s heating cycle12 Ignition Main menu Notational convention for menu-related instructionsSetting 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 Adding times to a week program Setting the water temperatureSetting program-controlled pump Week programmeDeleting times from a week program 20 Period added23 week program options Extra period Programming an extra periodSetting menu language SettingsSettings Setting day and time Displaying appliance specifications Remark46 Main menu Gis Setting the hysteresis Service programDisplaying the error history Service program Setting the pump on/offSetting the service interval Displaying the appliance historySetting the display scroll speed Setting the display contrastSetting the backlight time Setting the display contrastService program General errors TroubleshootingDisplayed errors Troubleshooting table for general errors Symptom Cause Solution Remark Gas smell Gas leakSee appendix ’A.2 Electrical diagram BFC’ Symptom Cause Solution Remark Display is offWater leakage Insufficient or no hot Troubleshooting table for displayed errorsSymptom Cause Solution Remark Explosive ignition WaterS04 blocking error S02 blocking errorS03 blocking error S05 blocking errorS14 blocking error S13 blocking errorS15 blocking error Phase-sensitive. See ’3.10 Electrical connection’ F02 lock out errorAppliance specifications’ How to bleed air from the gas line, and measure the supply F08 lock out error F06 lock out errorF07 lock out error ’3.9 Air supply and flue gas discharge’Error F09 remains active in the event that the water F10 lock out errorRelease R.1.3 UK Release R.1.3 UK E03 blocking error C04 blocking errorE01 blocking error E04 blocking errorMaintenance frequency Determining service intervalMaintenance frequency Maintenance Remark Preparation for maintenanceStarting up Maintenance Cleaning the burner Descaling and cleaning the tankCleaning condensation water discharge Water-side mainte- nance Introduction12.4.3 Cleaning the orificeCleaning heat exchanger Remark Finalising mainte- nanceWarranty Certificate Warranty Certificate Appendices Week program cardElectrical diagram AppendicesWeek program card Release R.1.3 UK IX Index Index0306 IX Index
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