Baxi Potterton BBU 15 HE manual Condensate Pump runs, Clean condensate drain system, Replace fan

Page 36

Fault Finding Solutions Sections

12.0 Fault Finding

AIs there 230V at:

1.

 

 

 

NO

 

 

 

 

 

 

 

 

Main terminals L and N

Check electrical supply

 

 

 

 

NO

 

 

 

 

2.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Main terminal fuse

 

 

NO

 

Replace fuse

 

 

 

 

 

Display

 

 

 

 

 

 

 

 

 

 

3.

 

 

 

 

 

 

 

 

 

illuminated

 

 

 

 

 

 

 

 

 

PCB - X1 connector

 

Check wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

terminals 1,2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BCheck all system wiring and pump

CService Reset

Condensate Pump does not run On Reset is there 230V at:

NO

Replace PCB

1.

PCB - X3 connector terminals 5 &

NO

 

6 for at least 2 seconds

 

 

 

 

 

 

 

 

 

 

 

 

2.

Condensate Pump terminals for at

NO

 

least 2 seconds

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

YES

 

Condensate Pump runs

 

 

 

 

 

 

 

 

Replace PCB

Replace wiring

Replace Cond. Pump

Condensate drain system blocked

NO

Replace Float Switch

YES

Clean condensate drain system

D

E

 

Fan connections correct at fan. PCB -

YES

 

X2 connector, is 230V AC across

 

 

 

 

 

terminals 5 & 7

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

E20 - Temperature sensor faulty.

 

 

 

Cold resistance approximately

 

NO

10kΩ @ 25° C

 

 

 

 

(resistance reduces with increase in temp.)

 

 

 

E28 - Incorrect PCBfitted

 

 

 

 

 

 

 

 

 

Fan jammed or faulty winding

Replace PCB

Replace sensor or PCB(E28)

YES

Replace fan

F 1.

Check and correct the connection of the tube between the venturi and gas valve

G

2.

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gas at burner

 

Ensure gas is on and purged

 

 

 

 

 

Replace PCB

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

PCB - X3 connector is 230V AC across

 

 

 

 

 

 

 

 

 

 

 

 

Replace gas valve

 

 

 

 

 

 

 

 

 

 

terminals 1 & 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

voltage at PCB - X2 connector is

 

NO

 

 

 

 

Check and correct if necessary

 

 

 

 

 

 

 

 

 

 

 

Replace PCB

 

1.

Ignition electrode and lead

 

 

YES

 

110V AC across terminals 2 & 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Note: from multimeter connect

 

 

 

 

 

 

 

2.

Electrode connection

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

‘common’ to 2 & ‘volts’ to 5)

 

Replace igniter

 

3. Spark gap and position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

36© Baxi Heating UK Ltd 2009

Page 35 Page 37
Image 36
Page 35 Page 37
Contents Baxi Bermuda BBU 15 HE 0086 Installer Notification Guidelines Scheme Members onlyImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice, most recent version should be used Safe Manual Handling Contents Contents IntroductionDescription General Layout Layout FigFlue Kit 10m & 12.5m a Technical Data Bermuda HE Cbbu 15 HESystem Details Water Circulating SystemsTreatment of Water Circulating Systems There is a drain cock supplied in the plumbing kitPipework System ControlsStorage Systems Sealed Systems Figs , 7 Sealed Systems Site Requirements Builders Opening FigLocation Fireplace Opening & SurroundFlue No Horizontal Runs are PermittedVentilation Gas Supply FigElectrical Supply Fig Electrical Connection Gas ConnectionCondensate Drain General Condensate Disposal FigTotal volume of the sump is 1.5 litres Condensate DisposalCondensate Pump Operation From Boiler 500mm MinBoiler Internal Wiring Boiler Internal Illustrated Wiring DiagramInstallation Initial PreparationFlue System Barb ‘C’ Clip Air Cowl Air Duct Collar Ribs Terminal Cap Siting the Boiler Water ConnectionsGas Connection Electrical ConnectionCompletion & Commissioning CompletionCommissioning the Boiler Test Point Annual Servicing Annual ServicingAnnual Servicing Inspection Electrode Assembly Fig Changing ComponentsChanging Components Spark Generator FigFan Fig Burner FigSpark Generator Plug Electrode Fan Injector Burner Spark Generator Plug Gas Feed Pipe InjectorInjector Gas Valve Earth Wire Gas Valve FigSafety Thermostat Fig Float Switches FigPCB Fig NTC FigSetting the Gas Valve Setting the Gas Valve CO2 checkFlue Sampling Point Display Control Knobs Fault Finding Initial Fault Finding ChecksError Codes Error 110 flashing Burner lights Press the Service ResetSwitch for 5 seconds Go to section ‘A’Clean condensate drain system X2 connector, is 230V AC acrossTerminals 1 Voltage at PCB X2 connector is Spark gap and position Check wiringReplace Safety Thermostat Replace flame sensing electrode13.0 Short Parts List Short Parts ListPage Page Page GAS Boiler System Commissioning Checklist Service Record Date Energy Efficiency Checklist completed?Warranty & Service Serial Number Date of InstallationInstaller Details name, address and contact numbers After Sales Service 0844 871

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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