Baxi Potterton 30 HE manual Fault Finding

Page 48

16.0 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 15.0 “Illustrated Wiring Diagram” for position of numbered terminals

Central Heating - Follow operational sequence

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: When instructed to turn the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

selector to the reset position turn the

Turn selector to

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘A’

 

 

 

selector switch fully anticlockwise against

neon illuminated

 

 

 

 

 

 

 

 

 

the spring pressure to ‘Reset’ position and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

hold for 2 seconds to reset the boiler.

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

neon flashing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘B’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn

 

 

thermostat

NO

 

External controls and, where

NO

 

Ensure controls are set to

 

 

 

 

 

to max.

 

fitted, integral timer calling for

 

demand and verify the

 

 

 

 

 

 

Pump runs

 

 

heat

 

 

contacts are closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Primary flow switch operated

YES

NO

neon flashing Go to section ‘C’

Turn selector to reset

Fan runs at max speed

YES

NO

neon flashing

NO

YES

position. If regular resetting is

required or appliance still

does not operate

investigation is necessary

Go to sections ‘J’ & ‘M’

neons flashing Go to section ‘D’

Air pressure

switch proved

YES

Spark at ignition electrodes

for up to 10 seconds

YES

Burner on neon

illuminated

YES

Burner extinguishes

after 10 seconds

NO

Burner output

modulates until set

temperature is reached

YES

NO

NO

NO

YES

NO

YES

neon flashing Go to section ‘E’

neon flashing

NO

Replace PCB

Go to section ‘F’

neon flashing Go to sections ‘I’ & ’L’

Go to section ‘G’

YES

YES

Turn selector to the reset

position. If the neon does not extinguish go to sections H &

K

YES

Burner goes out

Fan stops

Pump stops

Operation sequence correct

48© Baxi Heating UK Ltd 2007

Page 47 Page 49
Image 48
Page 47 Page 49
Contents Installation & Service Instructions Contents Installer Notification Guidelines Scheme Members onlyImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice, most recent version should be used Safe Manual Handling GeneralPreparation TechniqueIntroduction DescriptionOptional Extras Case Front Panel Control Box Data BadgeGeneral Layout Layout1211 30 31 32 Central Heating Mode Fig Domestic Hot Water Mode FigFrost Protection Mode Appliance OperationTechnical Data Performa 30 HEDimensions and Fixings System Details InformationCentral Heating Circuit BypassSystem Filling and Pressurising Pressure Relief Valve FigDomestic Hot Water Circuit Fig ShowersHard Water Areas Site Requirements LocationClearances Figs Ventilation of Compartments Gas SupplyElectrical Supply External termination via internal Condensate DrainPlume Displacement Kit FlueBuilt-in element such as a window frame. See BS 5440 Pt Or DoorFlue Options Horizontal FluesHorizontal Flue Systems This bend is equivalent to 1 metreVertical Flues Twin Pipe Twin & Vertical Flue SystemsMetre for each 91.5 elbow Metre for each 45 elbow 1m extension 45bend 25m 91.5bendFlue Accessories Key Accessory Size5111079 Flue Duct Adaptor Air duct adaptorFor Twin Flue Systems fit the adaptors as follows Flue Dimensions For Roof TerminalsFlue Trim Terminal Guard FigPlume Displacement Plume Displacement Kit bElbow/Plume Outlet Assembly Ring Bracket Metres 60Ø Exhaust Flue Pipe 60Ø SupportDetermining Permissible Lengths 30mm General Fitting NotesMin metres Flue Trim Spigot ScrewPlume Outlet Elbow Installation Initial PreparationFlushing Preparing The BoilerFitting The Boiler Condensate Drain see sectionPressure Relief Valve Discharge Pipe Wall Plate Remove the sealing caps from the boiler connectionsFitting The Flue Wall Thickness Flue Elbow AdaptorWasteY Flue Inner Flue Support Bracket Flue Elbow Vertical FlueMaking The Electrical Connections Preliminary Electrical ChecksCommissioning the Boiler Commissioning the BoilerChecking the Burner Pressure Pressure Test Point Sealing ScrewCompletion CompletionCase Front Panel Facia Panel Servicing the Boiler 13 .1 Annual ServicingAnnual Servicing Pressure Switch Fig Changing ComponentsFan Figs 14.0 Changing Components Heat Exchanger FigBurner Fig Injectors Fig Electrodes FigInsulation Fig Reassemble in reverse orderCentral Heating Temperature Sensor Fig Safety Thermostat FigDHW Temperature Sensor Fig Gas Valve FigPump Head Only Fig Pump Complete FigAutomatic Air Vent Fig Pressure Gauge Figs Expansion Vessel FigCondensate Trap Fig Selector Switch Fig 14.19 P.C.B. FigPlate Heat Exchanger Fig Diverter Valve Assembly Flow Regulator FigsSecondary Heat Exchanger Fig Flue Overheat Thermostat FigIllustrated Wiring Diagram Control PCBFault Finding Microswitch terminals Diverter valve spindle Assembly faultyDomestic Hot Water Follow operational sequence Turn selector to neon illuminatedCheck wiring PCB A4 connector Replace selector Terminals 4 Replace pump PCB A4 connector terminals 3 Replace PCBPCB A2 connector, is Across terminals 5 Replace microswitchPCB A1 connector has 230V AC Turn selector switchTo ‘Reset’ position Gas at burnerON/OFF/RESET selector when turned to ‘Reset’ position Short Parts List Short Parts List131 154GAS Boiler Commissioning Checklist Service Interval Record Potterton
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30 HE specifications

The Baxi Potterton 30 HE is a popular choice among homeowners seeking an efficient and reliable boiler solution. Recognized for its compact design and advanced technologies, this boiler is ideal for various residential heating needs.

One of the standout features of the Baxi Potterton 30 HE is its high efficiency rating, which ensures lower energy consumption and reduced utility bills. With an impressive efficiency of up to 90%, this boiler operates at a much higher capacity compared to older models, making it both environmentally friendly and cost-effective. The 30 HE is particularly well-suited for medium to larger homes with a higher demand for hot water.

The Baxi Potterton 30 HE incorporates a range of innovative technologies aimed at enhancing performance and reliability. The automatic modulation function adjusts the boiler's output according to demand, ensuring that it only works as hard as necessary. This not only prolongs the lifespan of the unit but also maximizes comfort levels in the home.

Another feature of the 30 HE is its low noise operation. This boiler has been specifically designed to minimize sound, allowing it to operate quietly in the background without disturbing daily activities. This makes it an ideal choice for homes where noise can be a concern, particularly in open-plan living spaces.

The compact dimensions of the Baxi Potterton 30 HE make it easy to install in various locations, whether it be in a kitchen, utility room, or even a loft space. Its lightweight construction further simplifies the installation process, saving both time and labor costs.

In terms of user-friendliness, the boiler is equipped with an intuitive control panel that allows homeowners to easily adjust settings and monitor performance. This user-centric design ensures that even those who may not be technically inclined can manage their heating requirements with ease.

Safety features are also a priority in the design of the Baxi Potterton 30 HE. It includes built-in safety mechanisms such as frost protection and a burner pressure monitoring system, which work to prevent overheating and ensure optimal operation.

Overall, the Baxi Potterton 30 HE is an efficient, reliable, and user-friendly boiler that meets the heating demands of modern homes. Its blend of advanced technologies, compact size, and focus on safety make it a standout choice for homeowners seeking a high-performance heating solution.
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