Manuals / Baxi Potterton / Household Appliance / Boiler

Baxi Potterton 47-393-40 Turn selector switch to, Turn Domestic Hot Water, Open DHW tap fully

Models: 47-393-40 47-393-41 47-393-39 47-393-42

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18.0 Fault Finding

Domestic Hot Water - Follow operational sequence

Turn selector switch to

The display illuminates

YES

NO

Go to section ‘A’

	Error 110 flashing	YES
	Error 133 flashing
	NO
	Error 20, 28 or 50 flashing	YES
	Error 20, 28 or 50 flashing
	NO
	Error 119 flashing	YES
	Error 119 flashing
	NO
	Turn Domestic Hot Water
	thermostat to Maximum.
	Open DHW tap fully.
	DHW Hall Effect sensor	NO
	operated (red neon on the	NO
	operated (red neon on the
	sensor illuminated
	YES
	3-way valve is open to	NO
	Domestic Hot Water circuit
	YES	NO
	Pump runs	NO
	Pump runs
	YES
	Fan runs	NO
	Fan runs
	YES
	Fan runs at correct speed	NO
	Fan runs at correct speed

YES

	Spark at ignition electrodes for		NO
	up to 5 seconds and for 3		NO
	up to 5 seconds and for 3
	attempts
	YES	NO
		NO

Turn the selector switch to reset position for 5 seconds

Go to section ‘E’

Go to section ‘C’

DHW flow rate more than 2

l/min

Go to section ‘K’

Error 125 flashing

Go to section ‘B’

Error 160 flashing

Go to section ‘D’

Error 160 flashing

Go to section ‘L’

Error 133 flashing

Go to section ‘F’

YES

YES

YES

If the error 110 is still flashing.

Go to section ‘J’

Go to section ‘B’

YES

Is mains water filter and

assembly clean?

Is the magnetic detector free

to move in the Hall Effect

sensor

Go to section ‘H’

Turn the selector switch to the

reset position for 5 seconds

Burner lights	YES
Burner lights
YES
Burner output modulates to	NO
Burner output modulates to
maintain the temperature set
YES	NO
YES
Close DHW tap
YES

DHW flow sensor senses no	YES
flow. Burner goes out

	Burner does not stay alights	YES
	after 5 seconds	NO


	Reduce DHW flow rate
	Reduce DHW flow rate
	Burner modulates


	Error 130 flashing
	Go to section ‘M’

Fan stops after 10 seconds	YES
Fan stops after 10 seconds

Error 133 flashing

Go to section ‘I’

Clean DHW NTC sensor and DHW heat exchanger

Pump runs for 30 seconds

YES

Operation sequence

successful

56© Baxi Heating UK Ltd 2012

Image 56

Baxi Potterton 47-393-40, 47-393-39 Turn selector switch to, Turn Domestic Hot Water, Open DHW tap fully, Close DHW tap

Contents

Installation & Service Instructions Natural Gas Potterton TitaniumInstaller Notification Guidelines Scheme Members onlyCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Safe Manual Handling GeneralPreparation TechniqueContents Description Contents of PackIntroduction Domestic Hot Water Mode Light Display General LayoutLayout Expansion Vessel Automatic Air VentCentral Heating Mode Fig Domestic Hot Water Mode FigFrost Protection Mode Appliance OperationTechnical Data Titanium 24, 28, 33Dimensions and Fixings OrientationTap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mmSystem Details InformationCentral Heating Circuit BypassPressure Relief Valve Fig System Filling and Pressurising FigExpansion Vessel Central Heating only Hard Water Areas Domestic Hot Water Circuit FigShowers At Least 1.5 7.2 Clearances Figs Site RequirementsLocation Site Requirement Ventilation of CompartmentsGas Supply Electrical SupplyCondensate Drain 50mm per 500mm minRun Minimum fallBoiler External runs & those InsulationFlue Each fitting to aid assembly Flue OptionsHorizontal Flue Systems Horizontal FluesVertical Flues Twin & Vertical Flue Systems120mm Min ApartTelescopic Internal Flue Kit Flue AccessoriesKey Accessory Size Code No Air Duct Connection Flue Duct Connection Boiler Adaptor Twin Flue Duct AdaptorTwin Flue Connection Flue Dimensions For Roof TerminalsFlue Trim Terminal Guard FigPlume Displacement Plume Displacement Kit FigElbow/Plume Outlet Assembly Ring Bracket28/33/40 Determining Permissible LengthsExample Example Flue Lengths OKGeneral Fitting Notes 30mmElbow to allow the flue to be installed as shown 60Ø extension piece. It must be secured using twoUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screwsInstallation Unpacking & Initial PreparationFlushing After considering the site requirementsFitting the Filling Loop Kit Condensate Drain see section Fitting The BoilerFitting the Pressure Relief Discharge Pipe Fig Fitting The Flue Wall Thickness Flue ElbowEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste FlueEnsure Extension is fully engaged into Boiler Adaptor Inner Flue Support Bracket25mm Extension Cut End Making The Electrical Connections Preliminary Electrical ChecksSelector Switch Display CommissioningCommissioning the Boiler Screw Pump Automatic Air VentPressure Setting the Timer Case Front Panel Facia Panel CompletionCompletion Annual Servicing Inspection Servicing13 .1 Annual Servicing Viewing Window 10 ±1Burner Sensing Electrode Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Gasket Extension Piece Burner FigInsulation Fig Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigAutomatic Air Vent Fig Pump Head Only FigPump Complete Fig Pressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Fig Plate Heat Exchanger FigSelector Switch Fig 14.22 P.C.B. FigExpansion Vessel Fig Throttle Adjustment ScrewGas Valve Fig Setting the Gas Valve Setting the Gas Valve CO2 checkFlue Adaptor Test Point Plug Analyser Probe ThrottleIllustrated Wiring Diagram ElectricalShort Parts List Short Parts List306 302Error Codes Fault FindingInitial Fault Finding Checks Error 133 flashing Go to section ‘A’ Turn the selector switch toReset position for 5 seconds Pump runsTurn selector switch to Error 133 flashing Go to section ‘I’Turn Domestic Hot Water Open DHW tap fullyPCB X3 connector terminals 3 Switch terminalFan jammed or faulty winding Replace PCB Replace waterCheck wiring Viewing Window Replace sensor or PCB E28Gas at burner Replace gas valveReplace sensor Replace safety thermostatReplace PCB Is there 230V at Page Page GAS Boiler System Commissioning Checklist Service Record Potterton