Main terminal fuse Replace fuse, Replace fan | Baxi Potterton 30 HE

16.0 Fault Finding

Fault Finding Solutions Sections A to E

A

B

C

Is there 230V at:

NO

1.

Main terminals L and N

Check electrical supply

2.

YES

Main terminal fuse

Replace fuse

NO

3.

Selector terminals a & b and a

Check wiring

& 3. PCB - A4 connector

Replace selector

terminals 4 & 5

Is there 230V at:

1.

NO

Pump

If pump jammed, release

Replace pump

2.

NO

PCB - A4 connector terminals 3 & 6

Replace PCB

YES

Change pump supply cable

1.

NO

CH system pressure 0.5 to 1.5 bar

Re-pressurise system

2.

Check the tap of the automatic air

NO

Open the automatic air vent

3.

vent is opened

YES

Primary flow valve diaphragm damaged

Replace diaphragm

NO

Flow valve rod obstructed

neon illuminated

NO

Replace PCB

D 1.
D 1.	Continuity across flow	NO
	microswitch and PCB - A5
	connector terminals 7 & 8

2. Primary temperature sensor faulty. Cold resistance approx. 11K ohms (resistance reduces with increase in temp.)

3.	Fan connections correct at fan.		YES
	PCB - A2 connector, is 230V		YES
	PCB - A2 connector, is 230V
	across terminals 5 & 7

		NO

Replace microswitch

YES

Replace sensor

Fan jammed or faulty winding

Replace PCB

YES

Replace fan

50© Baxi Heating UK Ltd 2007

Image 50

Baxi Potterton 30 HE manual Main terminal fuse Replace fuse, Check wiring PCB A4 connector Replace selector Terminals 4

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.

Contents

Installation & Service Instructions Contents Installer Notification Guidelines Scheme Members only Codes of Practice, most recent version should be used Important Installation, Commissioning, Service & RepairLegislation Preparation Safe Manual HandlingGeneral Technique Optional Extras IntroductionDescription Case Front Panel Control Box Data Badge 1211 30 31 32 General LayoutLayout Frost Protection Mode Central Heating Mode FigDomestic Hot Water Mode Fig Appliance Operation Technical Data Performa 30 HE Dimensions and Fixings Central Heating Circuit System DetailsInformation Bypass System Filling and Pressurising Pressure Relief Valve Fig Hard Water Areas Domestic Hot Water Circuit FigShowers Clearances Figs Site RequirementsLocation Electrical Supply Ventilation of CompartmentsGas Supply External termination via internal Condensate Drain Built-in element such as a window frame. See BS 5440 Pt Plume Displacement KitFlue Or Door Horizontal Flue Systems Flue OptionsHorizontal Flues This bend is equivalent to 1 metre Metre for each 91.5 elbow Metre for each 45 elbow Vertical Flues Twin PipeTwin & Vertical Flue Systems 1m extension 45bend 25m 91.5bend 5111079 Flue AccessoriesKey Accessory Size For Twin Flue Systems fit the adaptors as follows Flue Duct AdaptorAir duct adaptor Flue Trim Flue DimensionsFor Roof Terminals Terminal Guard Fig Elbow/Plume Outlet Assembly Plume DisplacementPlume Displacement Kit b Ring Bracket Metres 60Ø Exhaust Flue Pipe 60Ø Support Determining Permissible Lengths Min metres Flue Trim Spigot 30mmGeneral Fitting Notes Screw Plume Outlet Elbow Flushing InstallationInitial Preparation Preparing The Boiler Pressure Relief Valve Discharge Pipe Wall Plate Fitting The BoilerCondensate Drain see section Remove the sealing caps from the boiler connections Fitting The Flue Wall Thickness Flue Elbow Adaptor WasteY Flue Inner Flue Support Bracket Flue Elbow Vertical Flue Making The Electrical Connections Preliminary Electrical Checks Commissioning the Boiler Commissioning the Boiler Checking the Burner Pressure Pressure Test Point Sealing Screw Case Front Panel Facia Panel CompletionCompletion Servicing the Boiler 13 .1 Annual Servicing Annual Servicing Fan Figs Pressure Switch FigChanging Components Burner Fig 14.0 Changing ComponentsHeat Exchanger Fig Insulation Fig Injectors FigElectrodes Fig Reassemble in reverse order DHW Temperature Sensor Fig Central Heating Temperature Sensor FigSafety Thermostat Fig Gas Valve Fig Automatic Air Vent Fig Pump Head Only FigPump Complete Fig Condensate Trap Fig Pressure Gauge FigsExpansion Vessel Fig Selector Switch Fig 14.19 P.C.B. Fig Plate Heat Exchanger Fig Diverter Valve Assembly Flow Regulator Figs Secondary Heat Exchanger Fig Flue Overheat Thermostat Fig Illustrated Wiring Diagram Control PCB Fault Finding Domestic Hot Water Follow operational sequence Microswitch terminalsDiverter valve spindle Assembly faulty Turn selector to neon illuminated PCB A2 connector, is Check wiring PCB A4 connector Replace selector Terminals 4Replace pump PCB A4 connector terminals 3 Replace PCB Across terminals 5 Replace microswitch To ‘Reset’ position PCB A1 connector has 230V ACTurn selector switch Gas at burner ON/OFF/RESET selector when turned to ‘Reset’ position 131 Short Parts ListShort Parts List 154 GAS Boiler Commissioning Checklist Service Interval Record Potterton