A.O. Smith BFM - 100 Troubleshooting general errors, Symptom Cause Solution Remark Gas smell

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is

11.2 Troubleshooting: general errors

Warning

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

General errors

Symptom

Cause

Solution

 

Remark

 

 

 

 

 

 

Gas smell

Gas leak

 

 

 

Warning

 

Warning

 

 

 

 

Contact your installation engineer or local gas company

 

 

 

Close the main gas valve immediately.

 

immediately.

 

 

 

Warning

 

 

 

 

 

Do not operate any switches.

 

 

 

 

 

Warning

 

 

 

 

 

No naked flames.

 

 

 

 

 

Warning

 

 

 

 

 

Ventilate the boiler room.

 

 

 

 

 

 

 

 

 

 

 

 

 

Water leakage

Leakage from a water

Tighten the threaded connection

 

If the leak persists, consult your installation engineer

 

connection (threaded)

 

 

 

 

 

Leakage from another

Trace the leak

 

 

 

nearby water appliance

 

 

 

 

 

or pipe segment

 

 

 

 

 

 

 

 

 

 

Leakage from the

Consult the supplier and/or manufacturer

 

 

 

appliance's tank

 

 

 

 

 

Condensation

Before drawing (too much) tap water, wait until the water in the

 

 

 

 

boiler has reached the set temperature.

 

 

 

 

 

 

 

Explosive ignition

Incorrect supply

Set the correct supply pressure and/or burner

 

If ignition is not improved, consult your installation engineer.

 

pressure and/or burner

pressure. (3.11 "Checking the supply pressure and burner

 

 

Poor flame profile

pressure

pressure")

 

 

 

Contaminated burner

Clean the burner(s) (12.4.2 "Clean the burner(s)")

 

 

 

 

 

 

 

 

Contaminated orifice

Clean the orifice(s) (12.4.3 "Clean the orifice(s)")

 

 

 

 

 

 

 

 

Inadequate air supply

Improve the air supply by providing better ventilation in the boiler

 

 

 

 

room.

 

 

Instruction manual BFM

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Contents Page Page Liability Read this manual carefullyTrademarks More informationGis Table of contents Warranty certificate TroubleshootingPerforming maintenance Electrical diagramAbout the appliance IntroductionWhat to do if you smell gas Regulations Symbol Target group Maintenance Forms of notation Target groupsIntroduction Document Overview of thisChapter Target groups Description Gis General working Working principle of the appliancePrinciple Appliance Working principle of the appliance Appliances heating cycle Protection for the appliance Flame probe Water temperature protectionPressure switch Protection DescriptionVented installation Safety of the instal- lationUnvented installation 3 T&P valveGis Air humidity and ambient temperature InstallationAir humidity and ambient temperature PackagingWater composition InstallationMaximum floor load Working clearancesTechnical specifica- tions Dimensions of the appliance Plan and elevation of the applianceBFM100 BFM120 Ion General and electrical specificationsDimens Description UnitNatural gas G20 20 mbar Gas dataDescription Unit LP gas data G30 30 mbar butaneInstallation diagram Installation diagramRecirculation pipe Water connections, VentedCold water side Hot water sideSee C in the installation diagram 3.5 Installation diagram Circulation pipe Water connections, UnventedCirculation pipe Gas connectionInstalling chimney flue components for BFM 30, 50 Air supply and flue IntroductionConcentric wall flue terminal BFM Subject DescriptionConcentric roof flue terminal BFM 30, 50 C33 concentric roof flue terminal specifications BFM 30, 50 Installing chimney flue components for BFM 100Concentric wall flue terminal BFM100 C13 concentric wall flue terminal specifications BFM 100 M2000 MDV SCCConcentric roof flue terminal BFM 100 11 C33 concentric roof flue terminal specifications BFM 100 Electrical connectionConnecting the mains power Mains power Fan Alarm OffChecking the supply pressure and burner pressure Gas control for BFM 30 throughGas control for BFM BFM 30, 50, 80 BFMConversion to a different gas category ConversionOrifice replacement Conversion to a different gas categoryPage Conversion to a different gas category Filling Filling Draining Draining unvented installations DrainingDraining vented installations Gis Explanation of icons ON/OFF switchControl panel Control thermostatBurner control reset button Control panelStatus of the appliance Error conditionsOperating modes Status of the appliance Starting the appliance Starting and runningAppliances heating cycle Starting and running Isolating the appliance from the mains Shutting down the appliance for a brief period OFF modeShutting down Shutting the appliance down for a long periodShutting down Troubleshooting Control thermostat 7.5 Control thermostatWater leakage Troubleshooting general errorsSymptom Cause Solution Remark Gas smell Explosive ignitionTroubleshooting insufficient hot water Symptom Cause Solution Remark Insufficient hot waterTroubleshooting No hot water Symptom Cause Solution Remark CyclePage Performing maintenance Introduction Preparation for maintenanceWater-side mainte- nance 12.3.1 Descaling and cleaning the tankPerforming maintenance Checking the anodesIMD-0235 R2 Gas-side mainte- nance 12.4.1 Clean the burnersClean the orifices Checking the flue baffles Finalising mainte- nance13.2 Tank warranty Warranty certificate13.1 General warranty Conditions for Instal- lation and useWarranty certificate Electrical diagram BFM Electrical Diagram Electrical diagramOptional Components Electrical diagram Index 0306 Index