Baxi Potterton Gold HE A Range manual Gas at burner, Replace gas valve, Terminals 1

Page 56

18.0 Fault Finding

E

E20 or E50 - Temperature sensors faulty. Cold resistance approximately

10kΩ @ 25° C (DHW and CH sensors) 20kΩ @ 25° C (Flue sensor)

(resistance reduces with increase in temp.)

E28 - Incorrect PCBfitted

NO

Replace sensor or PCB(E28)

F 1.

Check and correct the connection of the tube between the venturi and gas valve

G

2.	Gas at burner	NO	Ensure gas is on and purged

	PCB - X3 connector is 230V AC across				YES
	PCB - X3 connector is 230V AC across				YES		Replace gas valve
		terminals 1 & 2					Replace gas valve



		NO

		Replace PCB

1.

Ensure that the Hall Effect Sensor is in position.		YES		Check the voltage between red wire and blue
Check the connection between the PCB - X400				wire is more than 5V DC
connector terminals 3,6,7 and the electronic sensor
				NO		YES
				NO		YES

H

Check and correct if necessary

1.Ignition electrode and lead

2.Electrode connection

3.Spark gap and position

YES

Replace PCB

Voltage at PCB - X2 connector is at least 100V DC across terminals 2 & 5 (Note: from multimeter connect ‘common’ to 2 & ‘volts’ to 5). Check wiring

NO

YES

Replace Hall Effect Sensor

Replace PCB

Replace igniter

Burner

Viewing Window

7.5 ± 1

4 ± 0.5

10 ± 1

Electrode Position

56© Baxi Heating UK Ltd 2008

Image 56

Contents Installation & Service Instructions Natural Gas BS-EN ISO 9001 Accredited CompanyInstaller 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 General Layout LayoutPump Protection Frost Protection ModeAppliance Operation Technical Data Gold Combi 24, 28 & 33 HE aDimensions and Fixings OrientationFlue Ø 100mm Tap 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 Clearances Figs Site RequirementsLocation Site Requirement Ventilation of CompartmentsGas Supply Electrical SupplyCondensate Drain Flue Flue terminal guardFlue Options Horizontal FluesHorizontal Flue Systems This bend is equivalent to 1 metreVertical Flues Twin Pipe Twin & Vertical Flue SystemsMetre for each 91.5 bend Metre for each 135 bend This bend is equivalent to 1 metre5111079 Flue AccessoriesKey Accessory Size Code No For Twin Flue Systems fit the adaptors as follows Flue Duct AdaptorAir duct adaptor Flue Dimensions For Roof TerminalsFlue Trim Flue Deflector FigMetres Ring Adaptor Plume DisplacementPlume Displacement Kit Fig Additional Accessories Elbow 5121369 Elbow Pair 5121370 28/33Determining Permissible Lengths ExampleShown in . Complete the installation of the 60Ø General Fitting Notes30mm Exhaust, securing in the bracketsPlume Outlet Elbow Flushing InstallationUnpacking & Initial Preparation Loop and valves must be connected as shown in the diagram a Fitting the Filling LoopDouble Check Valve Stop Valve Temporary Filling Loop Hose Fitting Cold Inlet Stop ValveFitting The Boiler Fitting the Pressure Relief Discharge Pipe FigCondensate Drain see section Tighten all the connectionsFitting The Flue Wall Thickness WasteFlue Elbow Ensure Elbow is fully Engaged into BoilerEnsure Extension is Fully engaged into Boiler Adaptor Inner Flue Support BracketEnsure Flue is fully Engaged into Flue Elbow Making The Electrical Connections Preliminary Electrical ChecksTerminal Block Cover Cable ClampSelector Switch Display CommissioningCommissioning the Boiler Heat Exchanger Automatic Air Vent Screw PumpTemperature Control CheckingSetting the Timer Case Front Panel Facia Panel CompletionCompletion Servicing 13 .1 Annual ServicingViewing Window Annual ServicingBurner Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorExtension Piece Burner FigInsulation Fig Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigHeat Exchanger Automatic Air Vent Fig Pump Head Only FigPump Complete Fig Automatic Air Vent FigPressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Figs Plate Heat Exchanger FigSelector Switch Fig 14.20 P.C.B. FigCompletely undo the screws securing the control box Pin FigVenturi Inlet Pipe Gas Valve FigExpansion Vessel Fig Checking the CO2 Temperature Control Selector Switch DisplayCombustion Check Illustrated Wiring Diagram ElectricalKey Description Manufacturers Short Parts ListShort Parts List Error Codes Fault FindingInitial Fault Finding Checks Error 133 flashing Reset position for 5 secondsDisplay illuminates Pump runsError 110 flashing Domestic Hot Water Follow operational sequenceTurn Domestic Hot Water Open DHW tap fullyPCB X3 connector terminals 3 Switch terminalFan jammed or faulty winding Replace PCB Is there 230V at Main terminals L and N Main terminal fuseGas at burner Replace gas valveTerminals 1 Ensure that the Hall Effect Sensor is in positionReplace heat exchanger Replace safety thermostatReplace PCB Is there 230V at GAS Boiler Commissioning Checklist Service Interval Record Brooks House, Coventry Road, Warwick. CV34 4LL UK Comp No 5116282 Iss 7 4/08