18.0 Fault Finding

Domestic Hot Water - Follow operational sequence

Turn selector switch to

The display illuminates

YES

NO

Go to section ‘A’

Error 110 flashing

YES

Error 133 flashing

 

NO

 

Error 20, 28 or 50 flashing

YES

 

NO

 

Error 119 flashing

YES

 

NO

 

Turn Domestic Hot Water

 

thermostat to Maximum.

 

Open DHW tap fully.

 

DHW Hall Effect sensor

NO

operated (red neon on the

 

sensor illuminated

 

YES

 

3-way valve is open to

NO

Domestic Hot Water circuit

 

YES

NO

Pump runs

 

YES

 

Fan runs

NO

 

YES

 

Fan runs at correct speed

NO

 

YES

Spark at ignition electrodes for

NO

up to 5 seconds and for 3

 

attempts

 

 

YES

NO

 

 

 

Turn the selector switch to reset position for 5 seconds

Go to section ‘E’

Go to section ‘C’

DHW flow rate more than 2

l/min

Go to section ‘K’

Error 125 flashing

Go to section ‘B’

Error 160 flashing

Go to section ‘D’

Error 160 flashing

Go to section ‘L’

Error 133 flashing

Go to section ‘F’

YES

YES

YES

If the error 110 is still flashing.

Go to section ‘J’

Go to section ‘B’

YES

Is mains water filter and

assembly clean?

Is the magnetic detector free

to move in the Hall Effect

sensor

Go to section ‘H’

Turn the selector switch to the

reset position for 5 seconds

Burner lights

YES

 

YES

 

Burner output modulates to

NO

 

maintain the temperature set

 

YES

NO

 

Close DHW tap

 

YES

 

DHW flow sensor senses no

YES

flow. Burner goes out

 

Burner does not stay alights

YES

after 5 seconds

NO

 

 

Reduce DHW flow rate

 

Burner modulates

 

 

 

 

 

Error 130 flashing

 

Go to section ‘M’

 

 

 

Fan stops after 10 seconds

YES

 

 

 

Error 133 flashing

Go to section ‘I’

Clean DHW NTC sensor and DHW heat exchanger

Pump runs for 30 seconds

YES

Operation sequence

successful

56© Baxi Heating UK Ltd 2012

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Image 56
Baxi Potterton 47-393-40, 47-393-39 Turn selector switch to, Turn Domestic Hot Water, Open DHW tap fully, Close DHW tap

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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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.