Baxi Potterton G.C.No 47 393 22 PCB X3 connector terminals 3, Switch terminal, Replace water

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18.0 Fault Finding

Fault Finding Solutions Sections

A

B

Is there 230V at:

1.Main terminals L and N

2.Main terminal fuse

3.PCB - X1 connector terminals 1,2

Is there 230V at:

NO

NO

NO

Check electrical supply

Replace fuse

Check wiring

Display illuminated

NO

Replace PCB

C

1.

2.

1.

Pump

YES

If pump jammed, release

 

PCB - X3 connector terminals 3 & 4

YES

Change pump supply cable

CH system pressure less than 0.5 bar

NO

NO

Replace pump

 

NO

Replace PCB

 

YES

Re-pressurise system

 

Check connection water pressure

 

 

 

 

switch terminal

 

 

 

 

 

YES

Replace water

COM - NO and PCB connector

 

 

 

pressure switch

X400 terminals 3,4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Check the tap of the automatic air

NO

 

Open the automatic air vent

 

vent is opened

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D 1.

Fan connections correct at fan. PCB - X2 connector, is 230V AC across terminals 5 & 7

NO

YES

Fan jammed or faulty winding

Replace PCB

YES

Replace fan

© Baxi Heating UK Ltd 2011

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Contents Installation & Service Instructions 0086 Scheme Members only Installer Notification GuidelinesCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation General Safe Manual HandlingPreparation TechniqueContents Description Contents of PackIntroduction Layout General LayoutPump Protection Frost Protection ModeAppliance Operation Promax Combi 24, 28 Technical DataOrientation Dimensions and FixingsTap Rail 32.5 mm Condensate Drain 65 mmInformation System DetailsCentral 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 Ventilation of Compartments Site RequirementGas Supply Electrical SupplyCondensate Drain Flue terminal guard FlueFlue Options Each fitting to aid assemblyHorizontal Flue Systems Horizontal FluesTwin & Vertical Flue Systems Vertical Flues120mm 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 For Roof Terminals Flue DimensionsFlue Trim Terminal Guard FigMetres Ring Adaptor Plume DisplacementPlume Displacement Kit Fig Determining Permissible Lengths 28/33Example 512136830mm General Fitting Notes60Ø extension piece. It must be secured using two Elbow to allow the flue to be installed as shownUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screwsUnpacking & Initial Preparation InstallationFlushing After considering the site requirementsFitting the Pressure Relief Discharge Pipe Fig Fitting The BoilerCondensate Drain see section Tighten all the connectionsWall Thickness Waste Fitting The FlueFlue Elbow Ensure Elbow is fully Engaged into BoilerEnsure Extension is fully engaged into Boiler Adaptor Inner Flue Support Bracket25mm Extension Cut End Terminal Block Cover Cable Clamp Making The Electrical ConnectionsPreliminary Electrical Checks Commissioning the Boiler CommissioningPressure Case Front Panel Facia Panel CompletionCompletion 13 .1 Annual Servicing ServicingAnnual Servicing Inspection Case Front Panel Facia Panel Securing ScrewsViewing Window 10 ±1Burner Sensing Electrode Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Gasket Extension Piece Burner FigInsulation Fig Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigAutomatic Air Vent Fig Pump Head Only FigPump Complete Fig Hall Effect Sensor Fig Pressure Gauge FigsPlate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig14.22 P.C.B. Fig Selector Switch FigExpansion Vessel Fig Throttle Adjustment ScrewGas Valve Fig Setting the Gas Valve CO2 check Setting the Gas ValveFlue Adaptor Test Point Plug Analyser Probe ThrottleElectrical Illustrated Wiring DiagramShort Parts List Short Parts List306 302Error Codes Fault FindingInitial Fault Finding Checks Go to section ‘A’ Turn the selector switch to Error 133 flashingReset position for 5 seconds Pump runsError 133 flashing Go to section ‘I’ Turn selector switch toTurn Domestic Hot Water Open DHW tap fullySwitch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Replace waterReplace sensor or PCB E28 Check wiring Viewing WindowGas at burner Replace gas valveReplace sensor Replace safety thermostatReplace PCB Is there 230V at Page Page Condensing Boilers only Service Record Brooks House, Coventry Road, Warwick. CV34 4LL

G.C.No 47 393 22, G.C.No 47 393 23, G.C.No 47 393 21 specifications

The Baxi Potterton range, specifically the models identified by G.C. No 47 393 21, G.C. No 47 393 23, and G.C. No 47 393 22, represents a robust selection of domestic heating solutions that cater to diverse consumer needs. Known for their reliability and efficiency, these boilers are designed with advanced technologies that ensure consistent performance and high levels of user satisfaction.

One of the primary features of these models is their compact design, allowing for flexibility in installation within various home environments. Whether placed in a kitchen, utility room, or cupboard, the space-saving configurations make them ideal for homeowners with limited installation areas.

These boilers utilize a high-efficiency heat exchanger that maximizes heating output while minimizing fuel consumption. This not only results in lower energy bills for consumers but also contributes positively towards reducing carbon footprints. The G.C. No 47 393 21, 47 393 22, and 47 393 23 models are known for their impressive Seasonal Efficiency Ratings, indicating superior energy efficiency, which is vital for compliance with modern building regulations.

In terms of technology, these models feature user-friendly digital displays that provide real-time information on system performance, making it easier for users to monitor and manage their home's heating needs. Additionally, some models come equipped with advanced control systems that allow homeowners to adjust settings remotely via smartphone applications, further enhancing convenience.

Safety is paramount in the design of Baxi Potterton boilers. Each unit is equipped with multiple safety features including built-in frost protection, pressure relief valves, and gas leak detection systems. This commitment to safety ensures peace of mind for users, knowing that their heating system is designed to operate securely.

Another significant characteristic of these models is their compatibility with renewable energy sources. They can work in conjunction with solar thermal systems and can be integrated into larger renewable setups, promoting sustainability in home heating.

In summary, the Baxi Potterton G.C. No 47 393 21, G.C. No 47 393 23, and G.C. No 47 393 22 models are a testament to modern engineering and design. With their emphasis on efficiency, safety, and convenience, they provide exceptional heating solutions for today's energy-conscious homeowners.
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