Manuals / Baxi Potterton / Household Appliance / Boiler

Baxi Potterton 47-393-41 Replace sensor or PCB E28, Gas at burner, Replace gas valve, Terminals 1

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

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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 PCB fitted

18.0 Fault Finding

NO

Replace sensor or PCB (E28)

F

G

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

2.

Gas at burner

NO

Ensure gas is on and purged

 

PCB - X3 connector is 230V AC across

YES

 

Replace gas valve

 

terminals 1 & 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

Check and correct if necessary

1.Ignition electrode and lead

2.Electrode connection

3.Spark gap and position

Burner

Sensing

Electrode

 

 

 

±

1

 

.

5

 

7

 

 

 

 

 

 

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

Viewing Window

10 ±1

Replace Hall

Effect Sensor

NO

Replace PCB

 

YES

Replace igniter

5 . 0 ±

4

Spark Ignition

Electrode

Electrode Position

58© Baxi Heating UK Ltd 2012

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Baxi Potterton 47-393-41, 47-393-40, 47-393-39 Replace sensor or PCB E28, Gas at burner, Replace gas valve, Terminals 1
Page 57 Page 59

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.

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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.