Baxi Potterton BBU 15 HE Go to section ‘A’, Display Illuminates, Error 110 flashing, Pump runs

Page 35

12.0 Fault Finding

Refer to Section 16.0 “Illustrated Wiring Diagram” for position of terminals and components

Central Heating - Follow operational sequence

Turn on Power Supply

NO

 

 

 

Go to section ‘A’

Display Illuminates

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

NOTE: Sections ‘A’ to ‘L’ referred to in the chart opposite are on the following pages

Error 110 flashing

YES

Error 131 flashing

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

YES

Error 20 or 28 flashing

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

YES

Error 158 flashing

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn Central Heating

NO

thermostat to Maximum.

 

 

Pump runs

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

YES

Error 155 flashing

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

YES

Error 125 flashing

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

NO

Fan runs

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

NO

 

 

 

 

 

 

 

 

Fan runs at correct speed

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

Spark at ignition electrodes for

NO

up to 5 seconds and for 3

 

 

 

 

attempts

 

 

 

 

 

 

 

 

 

 

YES

NO

YES

Burner lights

 

Press the Service Reset

YES

 

switch for 5 seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘E’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘C’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

Ensure all external controls

YES

 

are calling for heat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘J’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ensure that the system is full,

 

 

 

 

primary circulation is OK &

 

 

 

 

 

 

 

 

that there is no blockage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error 160 flashing

 

 

 

 

Go to section ‘D’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error 160 flashing

 

 

 

 

Go to section ‘K’

 

 

 

 

 

 

YES

 

 

 

 

Error 133 flashing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to section ‘F’

 

 

 

 

 

 

YES

 

 

 

 

Burner does not stay alights

 

after 5 seconds

 

 

 

 

 

 

 

 

 

If the error 110 is still flashing.

Go to section ‘I’

Ensure controls are set to

demand and verify the

contacts are closed

Go to section ‘B’

Go to section ‘J’

Go to section ‘G’

Turn the selector switch to

reset

Error 133 flashing

Go to section ‘H’

YES

Burner output modulates to maintain the temperature set

YES

Burner goes out

NO

YES

Check the Central Heating

NTC sensor

Go to section ‘E’

Fan stops after 10 seconds

YES

Burner relights after at least 3 minutes, when the display is less than the set temperature (room thermostat open)

YES

Operation sequence

successful

© Baxi Heating UK Ltd 2009

35

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Contents Baxi Bermuda BBU 15 HE 0086 Scheme Members only Installer Notification GuidelinesCodes of Practice, most recent version should be used Important Installation, Commissioning, Service & RepairLegislation Safe Manual Handling Contents Description ContentsIntroduction Layout Fig General LayoutFlue Kit 10m & 12.5m a Bermuda HE Cbbu 15 HE Technical DataThere is a drain cock supplied in the plumbing kit System DetailsWater Circulating Systems Treatment of Water Circulating SystemsStorage Systems PipeworkSystem Controls Sealed Systems Figs , 7 Sealed Systems Fireplace Opening & Surround Site RequirementsBuilders Opening Fig LocationNo Horizontal Runs are Permitted FlueElectrical Connection Gas Connection VentilationGas Supply Fig Electrical Supply FigCondensate Disposal Fig Condensate Drain GeneralFrom Boiler 500mm Min Total volume of the sump is 1.5 litresCondensate Disposal Condensate Pump OperationBoiler Internal Illustrated Wiring Diagram Boiler Internal WiringFlue System InstallationInitial Preparation Barb ‘C’ Clip Air Cowl Air Duct Collar Ribs Terminal Cap Electrical Connection Siting the BoilerWater Connections Gas ConnectionCommissioning the Boiler Completion & CommissioningCompletion Test Point Annual Servicing Annual ServicingAnnual Servicing Inspection Spark Generator Fig Electrode Assembly FigChanging Components Changing ComponentsBurner Spark Generator Plug Gas Feed Pipe Injector Fan FigBurner Fig Spark Generator Plug Electrode Fan InjectorGas Valve Fig Injector Gas Valve Earth WireNTC Fig Safety Thermostat FigFloat Switches Fig PCB FigFlue Sampling Point Display Control Knobs Setting the Gas ValveSetting the Gas Valve CO2 check Error Codes Fault FindingInitial Fault Finding Checks Go to section ‘A’ Error 110 flashingBurner lights Press the Service Reset Switch for 5 secondsSpark gap and position Check wiring Clean condensate drain systemX2 connector, is 230V AC across Terminals 1 Voltage at PCB X2 connector isReplace flame sensing electrode Replace Safety ThermostatShort Parts List 13.0 Short Parts ListPage Page Page GAS Boiler System Commissioning Checklist Date Energy Efficiency Checklist completed? Service RecordAfter Sales Service 0844 871 Warranty & ServiceSerial Number Date of Installation Installer Details name, address and contact numbers

BBU 15 HE specifications

The Baxi Potterton BBU 15 HE is a high-efficiency boiler designed to offer exceptional performance for both heating and hot water needs in residential settings. Known for its robust build quality and user-friendly features, this model is particularly favored for its versatility and reliability in various home environments.

One of the standout features of the Baxi Potterton BBU 15 HE is its compact size, making it suitable for installation in smaller spaces. Despite its small footprint, it delivers impressive outputs, making it ideal for homes with moderate heating demands. The boiler’s high efficiency rating ensures reduced energy consumption, leading to lower utility bills and a smaller carbon footprint.

Equipped with a powerful heat exchanger, the BBU 15 HE maximizes heat transfer, ensuring that households receive optimum warmth and hot water. With an output capacity of 15 kW, it can effectively heat a variety of living spaces while providing hot water on demand, making it a practical choice for families.

The boiler incorporates a number of advanced technologies that enhance its performance. One such feature is the built-in frost protection, which helps prevent the system from freezing during colder months. Additionally, the BBU 15 HE is designed for easy maintenance, featuring a simple access point for servicing, which can prolong the boiler’s lifespan and improve overall efficiency.

Safety is a top priority in any boiler installation, and the Baxi Potterton BBU 15 HE includes multiple safety features such as a pre-set temperature limit that prevents overheating and a pressure relief valve to manage excessive pressure within the system. These elements contribute to a safer home environment, providing peace of mind for homeowners.

Furthermore, the boiler is designed to operate quietly, minimizing disruptions in the home when heating systems are active. This is an important factor for many households where comfort is a priority.

In summary, the Baxi Potterton BBU 15 HE is a compact, efficient, and reliable boiler that provides an optimal solution for home heating and hot water needs. Its advanced features, safety systems, and user-friendly design make it a popular choice among homeowners, ensuring a cozy and comfortable living environment. Whether for a new installation or a replacement unit, this boiler stands out as a highly effective option in the market.
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