Baxi Potterton 30 HE Domestic Hot Water Follow operational sequence, Pump runs, Neons flashing

Page 49

Domestic Hot Water - Follow operational sequence

16.0Fault Finding

Turn selector to neon illuminated

YES

Turn thermostat to max.

Open DHW tap fully. DHW

flow switch operated

YES

Primary water is diverted from CH system to DHW heat exchanger and flow microswitch operated neon illuminated

YES

Pump runs

YES

Primary flow switch operated

YES

Fan runs at max speed

YES

NO

NO

NO

NO

NO

NO

Go to section ‘A’

 

 

 

 

 

Is mains water

YES

filter and differential

 

 

assembly clean?

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

DHW flow rate more than

 

2.5l/min.

 

 

 

 

NO

 

 

 

Continuity across DHW flow

microswitch terminals and

 

PCB - A5 connector

YES

terminals 5 & 6

 

 

 

 

 

 

 

 

neon flashing

 

Go to section ‘B’

 

 

 

 

 

neon flashing

 

Go to section ‘C’

 

 

 

 

YES

 

 

 

neon flashing

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

neons flashing

 

Go to section ‘D’

 

 

 

 

 

Replace diaphragm

YES

DHW flow valve diaphragm

damaged

NO

DHW flow valve rod

obstructed

Replace DHW flow

microswitch

Replace PCB

Turn selector to reset

position. If regular resetting is

required or appliance still

does not operate

investigation is necessary

Go to sections ‘J’ & ‘M’

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 to maintain temperature set at thermostat

YES

Close DHW tap

YES

DHW flow valve

senses no flow.

Primary water diverted to CH system. DHW flow switch released off

YES

Burner goes out

NO

NO

NO

YES

NO

NO

NO

neon flashing

Go to section ‘E’

YES neon flashing

NO

Replace PCB

Go to section ‘F’

neon flashing

Go to sections ‘I’ & ‘L’

Reduce the DHW flow rate. If burner does not modulate clean DHW temperature sensor and DHW heat exchanger. If modulation does not occur go to section ‘G’

Diverter valve spindle

assembly faulty

YES

Fan stops

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

K

Pump stops

YES

Operation sequence correct

© Baxi Heating UK Ltd 2007

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Page 48 Page 50
Contents Installation & Service Instructions Contents Scheme Members only Installer Notification GuidelinesLegislation Important Installation, Commissioning, Service & RepairCodes of Practice, most recent version should be used General Safe Manual HandlingPreparation TechniqueDescription IntroductionOptional Extras Case Front Panel Control Box Data BadgeLayout General Layout1211 30 31 32 Domestic Hot Water Mode Fig Central Heating Mode FigFrost Protection Mode Appliance OperationPerforma 30 HE Technical DataDimensions and Fixings Information System DetailsCentral Heating Circuit BypassPressure Relief Valve Fig System Filling and PressurisingShowers Domestic Hot Water Circuit FigHard Water Areas Location Site RequirementsClearances Figs Gas Supply Ventilation of CompartmentsElectrical Supply Condensate Drain External termination via internalFlue Plume Displacement KitBuilt-in element such as a window frame. See BS 5440 Pt Or DoorHorizontal Flues Flue OptionsHorizontal Flue Systems This bend is equivalent to 1 metreTwin & Vertical Flue Systems Vertical Flues Twin PipeMetre for each 91.5 elbow Metre for each 45 elbow 1m extension 45bend 25m 91.5bendKey Accessory Size Flue Accessories5111079 Air duct adaptor Flue Duct AdaptorFor Twin Flue Systems fit the adaptors as follows For Roof Terminals Flue DimensionsFlue Trim Terminal Guard FigPlume Displacement Kit b Plume DisplacementElbow/Plume Outlet Assembly Ring Bracket Metres 60Ø Exhaust Flue Pipe 60Ø SupportDetermining Permissible Lengths General Fitting Notes 30mmMin metres Flue Trim Spigot ScrewPlume Outlet Elbow Initial Preparation InstallationFlushing Preparing The BoilerCondensate Drain see section Fitting The BoilerPressure Relief Valve Discharge Pipe Wall Plate Remove the sealing caps from the boiler connectionsWall Thickness Flue Elbow Adaptor Fitting The FlueVertical Flue WasteY Flue Inner Flue Support Bracket Flue ElbowPreliminary Electrical Checks Making The Electrical ConnectionsCommissioning the Boiler Commissioning the BoilerPressure Test Point Sealing Screw Checking the Burner PressureCompletion CompletionCase Front Panel Facia Panel 13 .1 Annual Servicing Servicing the BoilerAnnual Servicing Changing Components Pressure Switch FigFan Figs Heat Exchanger Fig 14.0 Changing ComponentsBurner Fig Electrodes Fig Injectors FigInsulation Fig Reassemble in reverse orderSafety Thermostat Fig Central Heating Temperature Sensor FigDHW Temperature Sensor Fig Gas Valve FigPump Complete Fig Pump Head Only FigAutomatic Air Vent Fig Expansion Vessel Fig Pressure Gauge FigsCondensate Trap Fig 14.19 P.C.B. Fig Selector Switch FigPlate Heat Exchanger Fig Flow Regulator Figs Diverter Valve AssemblyFlue Overheat Thermostat Fig Secondary Heat Exchanger FigControl PCB Illustrated Wiring DiagramFault Finding Diverter valve spindle Assembly faulty Microswitch terminalsDomestic Hot Water Follow operational sequence Turn selector to neon illuminatedReplace pump PCB A4 connector terminals 3 Replace PCB Check wiring PCB A4 connector Replace selector Terminals 4PCB A2 connector, is Across terminals 5 Replace microswitchTurn selector switch PCB A1 connector has 230V ACTo ‘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.

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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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