15.0 FAULT FINDING

Carry out initial fault finding checks

1.Check that gas, water and electrical supplies are available at the boiler. Electrical supply = 230V ~ 50 Hz.

CH water system pressurised to 0.5 bar when the boiler is cold. The preferred minimum gas pressure is 19.5mbar (natural gas), or 36mbar (propane).

2.Carry out electrical system checks, i.e. Ground Continuity, Resistance to Ground, Short Circuit and Polarity with a suitable meter. NOTE: These checks must be repeated after any servicing or fault finding.

3.Ensure all external controls are calling for heat and check all external and internal fuses. Before any servicing or replacement of parts ensure the gas and electrical supplies are isolated.

Refer to Section 13.1 “Illustrated Wiring Diagram” for position of numbered terminals

Central Heating - Follow operational sequence

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: When instructed to turn the Selector

Turn selector to

 

 

 

 

 

 

NO

 

 

 

 

 

 

to the reset position turn the Selector

 

neon illuminated

 

 

 

Go to section ‘A’

 

 

 

Switch fully anticlockwise against the spring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure and hold for 2 seconds to reset

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the boiler.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘B’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn

 

 

thermostat

NO

 

External controls and,

NO

 

Ensure controls are set to

 

 

 

to max.

 

where fitted, integral timer

 

demand and verify the

 

 

 

 

 

 

 

 

Pump runs

 

 

calling for heat

 

 

contacts are closed

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Primary flow switch

NO

operated

 

 

 

 

YES

 

 

 

 

NO

 

 

Fan runs at max speed

 

 

 

 

YES

 

 

 

 

 

Air pressure

NO

switch proved

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

Spark at ignition

 

Go to section ‘C’

Turn the selector switch to the ‘Reset’ position and hold for at least 2 seconds. If regular resetting is required, or appliance still does not operate, investigation is necessary

Go to section ‘E’

Go to sections ‘J’, ‘L’ &

‘D’

NO

electrodes for up to 10

seconds

YES

Burner on

neon

NO

illuminated

 

 

 

 

 

 

 

 

YES

 

 

 

 

YES

 

 

 

 

Burner extinguishes

after 10 seconds

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Burner output

NO

modulates until set

 

temperature is reached

 

 

 

 

 

 

 

 

 

YES

 

 

 

YES

 

 

 

 

 

 

 

 

Burner goes out

illuminated

NO

Replace PCB

Go to section ‘F’

Go to section ‘I’

Go to section ‘G’

Fan stops

YES

YES

Turn selector to the reset position. If the light does not extinguish go to sections H & K

Pump stops

YES

Operation sequence

correct

Publication No. 5111811

41

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Baxi Potterton 24 Eco HE manual Fault Finding, Carry out initial fault finding checks, Operation sequence Correct
Page 40 Page 42

24 Eco HE specifications

The Baxi Potterton 24 Eco HE is a highly efficient and reliable boiler designed to meet the heating and hot water needs of modern homes. This wall-mounted combination boiler is particularly suited for smaller properties, providing a compact solution without compromising on performance.

One of the standout features of the Baxi Potterton 24 Eco HE is its high efficiency rating. It boasts an impressive ErP A-rating for both heating and hot water, which indicates that it is designed to minimize energy consumption and reduce utility bills. The condensing technology employed in this boiler recovers heat from flue gases that would otherwise be lost, optimizing the overall energy use and enhancing its eco-friendly credentials.

The Baxi Potterton 24 Eco HE also incorporates an intelligent control system, allowing homeowners to manage their heating settings more effectively. The built-in digital display is user-friendly, providing easy access to information such as system pressure and temperature settings. This feature facilitates easy programming of heating schedules, helping to ensure comfort while optimizing energy use.

Another characteristic of the Baxi Potterton 24 Eco HE is its impressive hot water output. With a hot water flow rate of up to 10.2 liters per minute, it ensures that showers and taps can be used simultaneously without running out of hot water. This makes it an excellent choice for families or households where demand for hot water is high.

Furthermore, the compact design of the Baxi Potterton 24 Eco HE allows for flexible installation options. Its reduced size means it can fit easily in kitchen cupboards or other confined spaces, making it ideal for homes where space is at a premium.

The boiler is equipped with a low-energy pump and a built-in frost protection feature, ensuring reliable operation even in colder climates. Additionally, its quiet operation contributes to a more comfortable living environment.

In summary, the Baxi Potterton 24 Eco HE is an efficient, compact, and powerful boiler that caters to the demands of modern living. With features such as high efficiency, intelligent controls, impressive hot water delivery, and flexible installation options, it stands out as a top choice for homeowners seeking a dependable and eco-friendly heating solution. This boiler is a testament to Baxi's commitment to delivering quality and innovation in the heating sector.
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