E

E20 or E50 - Temperature sensors faulty. Cold resistance approximately

10kí @ 25° C (DHW and CH sensors)

20kí @ 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

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

NO

YES

Replace Hall Effect Sensor

Replace PCB

Replace igniter

5 . 0 ±

4

Sensing Electrode

 

 

 

±

1

 

.

5

 

7

 

 

 

 

 

 

10 ±1

Spark Ignition

Electrode

© Baxi Heating UK Ltd 2012

55

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Image 55
Baxi Potterton Condensing Combination Boiler Replace sensor or PCB E28, Gas at burner, Replace gas valve, Terminals 1

Condensing Combination Boiler specifications

The Baxi Potterton Condensing Combination Boiler is a sophisticated heating solution designed to meet the demands of modern households while promoting energy efficiency. This state-of-the-art boiler combines both heating and hot water capabilities into a compact unit, making it an ideal choice for homes with limited space.

One of the standout features of the Baxi Potterton Condensing Combination Boiler is its impressive energy efficiency. With a high energy efficiency rating, these boilers can significantly reduce energy bills and minimize carbon footprints. The condensing technology maximizes heat recovery, allowing the boiler to utilize heat that would otherwise be lost in traditional systems. By extracting more energy from the combustion process, homeowners can enjoy reliable heating and hot water without the typical energy waste associated with older boilers.

The Baxi Potterton range is engineered for easy installation and maintenance, featuring a lightweight design that simplifies the fitting process. The built-in digital control system allows homeowners to easily adjust settings for optimal comfort and energy usage. Additionally, the boiler includes a frost protection feature, making it a reliable option for homes in colder climates.

Another key characteristic of the Baxi Potterton Condensing Combination Boiler is its powerful hot water delivery system. The combination boiler provides instant hot water on demand, eliminating the need for a separate water tank. This ensures that households have a constant supply of hot water for showers, cooking, and other domestic needs, without long wait times.

Safety is a top priority with the Baxi Potterton. The boiler is equipped with multiple safety features, including pressure relief valves and safety cut-off systems, ensuring peace of mind for homeowners. The compact design further includes a quiet operation feature, which is particularly beneficial for households where noise levels need to be kept to a minimum.

In summary, the Baxi Potterton Condensing Combination Boiler is a highly efficient, compact, and user-friendly solution for home heating and hot water needs. With its advanced technology and strong emphasis on safety, it stands out as a reliable choice for modern households looking to improve energy efficiency while maintaining comfort. Whether you are replacing an old boiler or installing a new system, the Baxi Potterton offers a perfect blend of practicality and innovation.