Bosch Appliances 24I RSF manual GO to Check G Check E, GO to Check M, GO to Check N

Page 31

Ignition Check

NO

Is fan running?

YES

Does sparking occur? NO

YES

Does ignition occur? NO

GO TO

CHECK G

GO TO

CHECK E

Is sparking present at NO the electrodes?

GO TO

CHECK L

Are ignition leads	NO
connected both
ends securely?

Faulty PCB

Replace

Connect ignition leads

securely

YES

Does burner continue?

YES

NO

YES

GO TO

CHECK M

Is flame sense	NO
electrode in flame?
YES
Is lead secure	NO
both ends?
YES

GO TO

CHECK I

HARNESS OK

Faulty PCB

Replace

YES

Are leads breaking NO

down?

YES

Replace leads

Ensure flame sense

electrode in flame at

minimum burner

pressure

Secure lead

Ignition coil faulty

replace PCB

Does gas pressure NO modulate?

YES

Ignition OK

GO TO

CHECK N

31

Image 31

Contents

These Instructions Apply in the UK only 24i RSFInstallation Regulations ContentsGeneral Information Packing General InstallationSafety Considerations Electrical SupplyData Tables Siting The Appliance Appliance casing dimensions and required clearancesTerminal Position Siting The FlueAir Supply Position AIR from AIR DirectOpen Vent System Sealed SystemRoom thermostat connections Hot Water SupplyElectrical Safety CheckMains Supply Functional flow diagram Flue Options Installing The ApplianceGeneral Fitting Appliance pipework connections AIR and Flue Duct Preparation and AssemblyStandard flue assembly Flue Bends Internal Fitting of the Duct AssemblyVertical Adapter Final InstallationSummary Commissioning The ApplianceAppliance and Central Heating System Preparation Appliance Operation ProgrammerCompletion of Commissioning Servicing Inspection And ServicePRE-SERVICE Inspection Instructions To The UserDismantle the Appliance Service of ComponentsTest the Appliance Draining the Appliance Replacement Of PartsComponent Access Component ReplacementSpark electrode assembly Water Flow Switch. Side View Gauze Filter Conversion InstructionsCentral Heating Mode Operational Flow DiagramsDomestic Hot Water Mode Fault Finding GO to Check K GO to Check D Check CGO to Check F Check E GO to Check OFaulty GO to Check L GO to CheckThermistor Check GO to Check M GO to Check G Check EGO to Check N APS OK White & BrownModulating Valve Check Component Parts List 1210 Bosch Group