PCB X3 connector terminals 3 | Baxi Potterton 47-393-39, 47-393-40

18.0 Fault Finding

Fault Finding Solutions Sections

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:

Check electrical supply

Replace fuse

Check wiring

Display illuminated

Replace PCB

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	Replace pump

NO	Replace PCB

YES	Re-pressurise system

Check connection water pressure
switch terminal
switch terminal	YES	Replace water
COM - NO and PCB connector		pressure switch
X400 terminals 3,4		pressure switch

2.	Check the tap of the automatic air	NO
2.	Check the tap of the automatic air	NO	Open the automatic air vent
	vent is opened		Open the automatic air vent

D 1.

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

YES

Fan jammed or faulty winding

Replace PCB

YES

Replace fan

Page 57

Image 57

Baxi Potterton 47-393-39, 47-393-40, 47-393-41 PCB X3 connector terminals 3, Switch terminal, Replace water, Replace fan

47-393-40, 47-393-41, 47-393-39, 47-393-42 specifications

The Baxi Potterton 47-393-42, 47-393-39, 47-393-41, and 47-393-40 are models of high-efficiency gas boilers designed for residential heating. These models are well-known for their reliability, advanced technology, and user-friendly features, making them a popular choice among homeowners looking to improve their heating systems.

One of the standout features of these models is their energy efficiency. Each unit is engineered to comply with stringent energy-saving regulations, significantly reducing utility bills while maintaining optimal heating performance. They are rated with impressive efficiency ratings, which can lead to long-term savings and a reduced carbon footprint.

The Baxi Potterton range employs a heat exchanger system designed to maximize heat transfer and minimize energy waste. This sophisticated technology ensures that the boiler operates at peak efficiency, providing ample heating for homes even in the coldest months. The use of a durable, high-quality heat exchanger material contributes to the longevity of the unit, reducing the need for frequent repairs or replacements.

Ease of use is another hallmark of the 47-393 series. With an intuitive digital display, users can effortlessly monitor and adjust settings as required. The controls are straightforward, allowing for quick temperature adjustments, system diagnostics, and alerts, creating a hassle-free experience for homeowners.

Safety features are inherent in these models, including built-in safeguards against overheating and pressure fluctuations. The automatic shut-off mechanism ensures that the boiler operates within safe parameters, providing peace of mind to users.

Furthermore, maintenance is simplified with the easy access design. The accessible components make it straightforward for service technicians to perform routine checks and repairs. Regular maintenance is essential for sustaining high performance and extending the lifespan of the boiler.

In conclusion, the Baxi Potterton 47-393-42, 47-393-39, 47-393-41, and 47-393-40 models represent a blend of efficiency, safety, and convenience. Their advanced technologies and features not only enhance the user experience but also contribute to more sustainable heating solutions for homes. Investing in one of these advanced boilers ensures reliable performance, lower energy costs, and a commitment to environmental responsibility.

Contents

Installation & Service Instructions Potterton Titanium Natural Gas Scheme Members only Installer Notification Guidelines Important Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version General Safe Manual HandlingPreparation Technique Contents Contents of Pack IntroductionDescription General Layout Domestic Hot Water Mode Light DisplayLayout Expansion Vessel Automatic Air Vent Domestic Hot Water Mode Fig Central Heating Mode FigFrost Protection Mode Appliance Operation Titanium 24, 28, 33 Technical Data Orientation Dimensions and FixingsTap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mm Information System DetailsCentral Heating Circuit Bypass System 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 Ventilation of Compartments Site RequirementGas Supply Electrical Supply Condensate Drain 500mm min 50mm per Minimum fall RunBoiler External runs & those Insulation Flue Flue Options Each fitting to aid assemblyHorizontal Flue Systems Horizontal Flues Twin & Vertical Flue Systems Vertical Flues120mm Min Apart Flue Accessories Key Accessory Size Code NoTelescopic Internal Flue Kit Twin Flue Duct Adaptor Twin Flue ConnectionAir Duct Connection Flue Duct Connection Boiler Adaptor For Roof Terminals Flue DimensionsFlue Trim Terminal Guard Fig Plume Displacement Kit Fig Plume DisplacementElbow/Plume Outlet Assembly Ring Bracket Determining Permissible Lengths 28/33/40Example Example Flue Lengths OK 30mm General Fitting Notes 60Ø 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 screws Unpacking & Initial Preparation InstallationFlushing After considering the site requirements Fitting the Filling Loop Kit Fitting The Boiler Fitting the Pressure Relief Discharge Pipe FigCondensate Drain see section Wall Thickness Flue Elbow Fitting The FlueEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste Flue Inner Flue Support Bracket 25mm Extension Cut EndEnsure Extension is fully engaged into Boiler Adaptor Preliminary Electrical Checks Making The Electrical Connections Commissioning Selector Switch DisplayCommissioning the Boiler Screw Pump Automatic Air Vent Pressure Setting the Timer Completion CompletionCase Front Panel Facia Panel Servicing 13 .1 Annual ServicingAnnual Servicing Inspection 10 ±1 Burner Sensing ElectrodeViewing Window Changing Components Igniter FigSpark and Sensing Electrodes Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector Burner Fig Insulation FigBurner Gasket Extension Piece Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor Fig Pump Head Only Fig Pump Complete FigAutomatic Air Vent Fig Hall Effect Sensor Fig Pressure Gauge Figs Plate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig 14.22 P.C.B. Fig Selector Switch Fig Throttle Adjustment Screw Gas Valve FigExpansion Vessel Fig Setting the Gas Valve CO2 check Setting the Gas ValveFlue Adaptor Test Point Plug Analyser Probe Throttle Electrical Illustrated Wiring Diagram Short Parts List Short Parts List306 302 Fault Finding Initial Fault Finding ChecksError Codes Go to section ‘A’ Turn the selector switch to Error 133 flashingReset position for 5 seconds Pump runs Error 133 flashing Go to section ‘I’ Turn selector switch toTurn Domestic Hot Water Open DHW tap fully Switch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Replace water Replace sensor or PCB E28 Check wiring Viewing WindowGas at burner Replace gas valve Replace safety thermostat Replace PCB Is there 230V atReplace sensor Page Page GAS Boiler System Commissioning Checklist Service Record Potterton

Baxi Potterton 47-393-39, 47-393-40 PCB X3 connector terminals 3, Switch terminal, Replace water

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

18.0 Fault Finding

Fault Finding Solutions Sections

PCB - X3 connector terminals 3 & 4

switch terminal

Replace water

Fan jammed or faulty winding

Replace PCB

Replace fan

47-393-40, 47-393-41, 47-393-39, 47-393-42 specifications