Potthof & Co 33kw Error 133 flashing, Pump runs, Heating circuit, Reset position for 5 seconds

Page 55

18.0 Fault Finding

Refer to Section 16.0 “Illustrated Wiring Diagram” for position of terminals and components

Central Heating - Follow operational sequence (do

Turn selector switch to

NO

The display illuminates

YES

Error 110 flashing

YES

Error 130 flashing

Error 133 flashing

NO

YES

Error 20, 28 or 50 flashing

NO

YES

Error 119 flashing

NO

Turn Central Heating

NO

thermostat to Maximum.

Pump runs

YES

YES

Error 125 or 193 flashing

NO

NO

3-way valve is open to Central

Heating circuit

YES

NO

Fan runs

YES

NO

Fan runs at correct speed

YES

Spark at ignition electrodes for

NO

up to 5 seconds and for 3

attempts

YES

NO

Go to section ‘A’

	Turn the selector switch to			YES
	reset position for 5 seconds


	Go to section ‘E’


	Go to section ‘C’


	NO

	Ensure all controls (and			YES
	integral clock if fitted) are			YES
	calling for heat


	Ensure that primary
	circulation is OK & that
	there is no blockage


	Go to section ‘K’


	Error 160 flashing
	Go to section ‘D’


	Error 160 flashing
	Go to section ‘L’
				YES

	Error 133 flashing
	Error 133 flashing


	Go to section ‘F’

If the error 110 is still flashing.

Go to section ‘J’

Ensure controls are set to

demand and verify the

contacts are closed

Go to section ‘B’

Go to section ‘H’

Turn the selector switch to

reset

		YES
	Burner lights	YES
	Burner lights

YES

NO

Burner output modulates to maintain the temperature set

Burner does not stay alights

after 5 seconds

Check the Central Heating

NTC sensor

Go to section ‘E’

Error 130 flashing

Go to section ‘M’

YES

Error 133 flashing Go to section ‘I’

YES

Burner goes out

YES

Fan stops after 10 seconds

YES

Pump continues to run for 3

minutes

(room thermostat open)

YES

Operation sequence

successful

© Baxi Heating UK Ltd 2012

55

Image 55

Contents Installation & Service Instructions Benchmark Scheme Natural GasScheme Members only Installer Notification GuidelinesLegislation Important Installation, Commissioning, Service & RepairCodes of Practice refer to the most recent version Technique Safe Manual HandlingGeneral PreparationContents Introduction Contents of PackDescription Circulation Pump Drain Off Point General LayoutLayout Expansion Vessel Automatic Air VentAppliance Operation Central Heating Mode FigDomestic Hot Water Mode Fig Frost Protection ModeGold Combi 24, 28 & 33 HE a Technical DataDimensions and Fixings Bypass System DetailsInformation Central Heating CircuitSystem Filling and Pressurising Fig Safety Pressure Relief Valve FigExpansion Vessel Central Heating only Showers Domestic Hot Water Circuit FigHard Water Areas At least Site RequirementsLocation Clearances FigsElectrical Supply Site RequirementVentilation of Compartments Gas SupplyRun PerPipe run Minimum Fall Per Metre50mm per Minimum Fall500mm min Minimum fall RunLikely flue positions requiring a flue terminal guard Plume Displacement KitFlue Below windows or openings on pitched roofs 2000Total equivalent length = +B+C+2x90Bends Flue OptionsTotal Equivalent Length = +B+C+1x90Bend Key Accessory Size Code No Flue AccessoriesTelescopic Flue inc. elbow Twin Flue Connection Twin Flue Duct AdaptorAir Duct Connection Flue Duct Connection Boiler Adaptor Terminal Guard Fig Flue DimensionsFor Roof Terminals Flue TrimPlume Displacement Kit Fig Plume DisplacementElbow 28/33Determining Permissible Lengths ExampleGeneral Fitting Notes 50mm30mm Extension and outlet. Secure using two of the screws Elbow to allow the flue to be installed as shown60Ø extension piece. It must be secured using two Using a suitable bit e.g mm, drill throughAfter considering the site requirements InstallationUnpacking & Initial Preparation FlushingFitting the Filling Loop Kit Tighten all the connections Fitting the Safety Pressure Relief Discharge Pipe FigFitting The Boiler Condensate Drain see sectionWall Thickness Waste Flue Fitting The FlueWall Thickness Flue Elbow Ensure Elbow is fully engaged into Boiler Adaptor25mm Extension Cut End Inner Flue Support BracketEnsure Extension is fully engaged into Boiler Adaptor Preliminary Electrical Checks Making The Electrical ConnectionsTerminal Block Cover Cable Clamp Screw Pump Automatic Air Vent Selector Switch DisplayCommissioning Commissioning the BoilerIt is necessary to set the boiler to ‘Calibration Mode’ Temperature Control Selector Switch DisplayTemperature Control Gas Pressure Test Point Gas Valve Check the Operational Working Gas Inlet PressureSetting the Timer Completion CompletionCase Front Panel Facia Panel 13 .1 Annual Servicing ServicingAnnual Servicing Inspection 10 ±1 Electrode PositionIgniter Fig Changing ComponentsSpark and Sensing Electrodes Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector Fan FigVenturi Fig Injector FigInsulation Fig Burner FigExtension Piece Flue/Heat Exchanger Thermostat Sensor Fig Central Heating Temperature Sensor NTC FigSafety Thermostat Fig DHW Temperature Sensor NTC FigPump Complete Fig Pump Head Only FigAutomatic Air Vent Fig Hall Effect Sensor Fig Pressure Gauge FigsPressure Relief Valve Fig Plate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig14.22 P.C.B. Fig Selector Switch FigExpansion Vessel Fig Gas Valve FigCO2 should be 8.4% ± Reduce CO2 Setting the Gas ValveSetting the Gas Valve CO2 check Flue Adaptor Test Point Plug Analyser ProbeElectrical Illustrated Wiring Diagram315316 311 404419 422 400 415 Short Parts ListShort Parts List 426Initial Fault Finding Checks Fault FindingError Codes Pump runs Error 133 flashingGo to section ‘A’ Turn the selector switch to Reset position for 5 secondsClose DHW tap Error 133 flashing Go to section ‘I’Turn Domestic Hot Water Open DHW tap fullyReplace water PCB X3 connector terminals 3Switch terminal Fan jammed or faulty winding Replace PCBReplace gas valve Check wiring Viewing WindowReplace sensor or PCB E28 Gas at burnerReplace PCB Is there 230V at Replace safety thermostatReplace sensor Pages for Notes Pages for Notes GAS Boiler System Commissioning Checklist Service Record Potterton