Baxi Potterton G.C.No 47 393 23 Error 133 flashing, Pump runs, Heating circuit, Calling for heat

Page 51

18.0 Fault Finding

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

Central Heating - Follow operational sequence

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

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

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 2011

51

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Contents Installation & Service Instructions 0086 Scheme Members only Installer Notification GuidelinesImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version Technique Safe Manual HandlingGeneral PreparationContents Contents of Pack IntroductionDescription Layout General LayoutFrost Protection Mode Appliance OperationPump Protection Promax Combi 24, 28 Technical Data32.5 mm Condensate Drain 65 mm Dimensions and FixingsOrientation Tap RailBypass System DetailsInformation Central Heating CircuitSystem Filling and Pressurising Fig Expansion Vessel Central Heating onlyPressure Relief Valve Fig Domestic Hot Water Circuit Fig ShowersHard Water Areas Site Requirements LocationAt Least 1.5 7.2 Clearances Figs Electrical Supply Site RequirementVentilation of Compartments Gas SupplyCondensate Drain Flue terminal guard FlueHorizontal Flues Each fitting to aid assemblyFlue Options Horizontal Flue SystemsApart Vertical FluesTwin & Vertical Flue Systems 120mm MinFlue Accessories Key Accessory Size Code NoTelescopic Internal Flue Kit Twin Flue Duct Adaptor Twin Flue ConnectionAir Duct Connection Flue Duct Connection Boiler Adaptor Terminal Guard Fig Flue DimensionsFor Roof Terminals Flue TrimPlume Displacement Plume Displacement Kit FigMetres Ring Adaptor 5121368 28/33Determining Permissible Lengths Example30mm General Fitting NotesExtension 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 FlushingTighten all the connections Fitting The BoilerFitting the Pressure Relief Discharge Pipe Fig Condensate Drain see sectionEnsure Elbow is fully Engaged into Boiler Fitting The FlueWall Thickness Waste Flue ElbowInner Flue Support Bracket 25mm Extension Cut EndEnsure Extension is fully engaged into Boiler Adaptor Making The Electrical Connections Preliminary Electrical ChecksTerminal Block Cover Cable Clamp Commissioning the Boiler CommissioningPressure Completion CompletionCase Front Panel Facia Panel Case Front Panel Facia Panel Securing Screws Servicing13 .1 Annual Servicing Annual Servicing Inspection10 ±1 Burner Sensing ElectrodeViewing Window Changing Components Igniter FigSpark and Sensing Electrodes Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector Fan FigVenturi Fig Injector FigBurner Fig Insulation FigBurner Gasket Extension Piece Flue/Heat Exchanger Thermostat Sensor Fig Central Heating Temperature Sensor NTC FigSafety Thermostat Fig DHW Temperature Sensor NTC FigPump Head Only Fig Pump Complete FigAutomatic Air Vent Fig Hall Effect Sensor Fig Pressure Gauge FigsPlate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig14.22 P.C.B. Fig Selector Switch FigThrottle Adjustment Screw Gas Valve FigExpansion Vessel Fig Throttle Setting the Gas ValveSetting the Gas Valve CO2 check Flue Adaptor Test Point Plug Analyser Probe Electrical Illustrated Wiring Diagram302 Short Parts ListShort Parts List 306Fault Finding Initial Fault Finding ChecksError Codes Pump runs Error 133 flashingGo to section ‘A’ Turn the selector switch to Reset position for 5 secondsOpen DHW tap fully Turn selector switch toError 133 flashing Go to section ‘I’ Turn Domestic Hot WaterReplace 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 safety thermostat Replace PCB Is there 230V atReplace sensor Page Page Condensing Boilers only Service Record Brooks House, Coventry Road, Warwick. CV34 4LL
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