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Baxi Potterton 24 Eco HE manual Fault Finding, Publication No

Models: 24 Eco HE

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15.0 FAULT FINDING

	I
	I	Ensure that mains input
		Ensure that mains input
		terminal L is Live (230V) and N
		is Neutral (0V)

		YES

Check and correct if necessary

1.Flame sensing electrode and lead connections

2.Electrode position

Flame current should be 1 µA approx.

YES

NO

Replace PCB

Replace flame sensing electrode

J

	Boiler overheat thermostat				NO
	operated or faulty, i.e. continuity				NO


	across thermostat terminals

	YES

				Replace
				PCB

Allow to cool. Continuity

across thermostat terminals

more than 1.5 ohm

YES

Replace boiler

overheat thermostat

K

L

Check terminal 1 of ON/OFF/RESET selector is in connection with PCB - M1 connector terminal 16 Check electrical continuity across terminals 1 & a of ON/OFF/RESET selector when turned to ‘Reset’ position

Press the reset button on the flue overheat thermostat. If the boiler does not relight or repeatedly cuts out check the operation of the flue system or replace the flue overheat thermostat. If the flue overheat thermostat has not been activated see section ‘D’

NO

YES

Replace ON/OFF/RESET selector

Replace PCB

Publication No. 5111811

45

Image 45

Baxi Potterton 24 Eco HE manual Fault Finding, Publication No

Contents

Installation & Service Instructions Performa24 Eco HE CONTENTS Building Regulations and the Benchmark Commissioning ChecklistNatural Gas Scheme Members only INSTALLER NOTIFICATION GUIDELINESIMPORTANT - Installation, Commissioning, Service & Repair LEGISLATIONCodes of Practice, most recent version should be used 1.1 Description 1.0 INTRODUCTION1.2 Optional Extras Publication No2.1 Layout 2.0 GENERAL LAYOUT3.1 Central Heating Mode Fig 3.0 APPLIANCE OPERATION3.2 Domestic Hot Water Mode Fig Publication NoPump - Available Head 4.0 TECHNICAL DATA5.0 DIMENSIONS AND FIXINGS DimensionsPublication No 6.1 Information 6.0 SYSTEM DETAILS6.2 Central Heating Circuit 6.3 Bypass6.6 Expansion Vessel Central Heating only 6.5 System Filling and Pressurising6.7 Pressure Relief Valve Fig Publication No6.8 Domestic Hot Water Circuit 6.0 SYSTEM DETAILS6.9 Showers 6.10 Hard Water Areas7.1 Location 7.0 SITE REQUIREMENTS7.2 Clearances Fig. 11 Publication No7.3 Ventilation of Compartments 7.0 SITE REQUIREMENTS7.4 Gas Supply 7.5 Electrical Supply7.6 Condensate Drain Terminal Position with Minimum Distance Fig 7.7 Flue7.9 Flue Trim 7.8 Flue Dimensions7.10 Terminal Guard Fig Publication NoHorizontal Flues Vertical Flues Twin Pipe 7.0 SITE REQUIREMENTSVertical Flues 7.11 Flue Options8.1 Initial Preparation 8.0 INSTALLATION8.2 Flushing 8.3 Preparing The Boiler8.0 INSTALLATION 8.4 Fitting The Boiler8.5 Fitting the Pressure Relief Discharge Pipe Fig 8.6 Condensate Drain see section 8.7 Fitting The FluePublication No 8.7 Fitting the Flue Cont 8.0 INSTALLATIONKey to Wiring Functional Flow Diagram8.8 Making The Electrical Connections Preliminary Electrical Checks9.1 Commissioning the Boiler 9.0 COMMISSIONINGAdjusting the Pressure Fig 9.2 Checking the Burner PressurePublication No 10.1 Completion 10.0 COMPLETION11.0 SERVICING THE BOILER 11 .1 Annual ServicingPublication No 11.1 Annual Servicing Cont D.H.W. Filters FigInlet / Return Manifold 12.0 CHANGING COMPONENTS 12.2 Pressure Switch Fig12.1 Fan Figs. 50 Publication No12.4 Burner Fig 12.3 Heat Exchanger Fig12.6 Electrodes Fig 12.5 Injectors Fig12.7 Insulation Fig 13.812.0 CHANGING COMPONENTS 12.10 Safety Thermostat Fig12.8 Gas Valve Fig 12.9 Temperature Sensor Fig12.11 Pump - Head Only Figs. 58 12.0 CHANGING COMPONENTS12.12 Pump - Complete Figs. 59 12.13 Automatic Air Vent Fig12.15 Expansion Vessel Fig 12.14 Pressure Gauge Figs12.16 Condensate Trap Fig Vessel Outlet12.0 CHANGING COMPONENTS 12.19 Selector Switch Fig12.17 Pressure Relief Valve Fig 12.18 P.C.B. Fig12.20 Plate Heat Exchanger Fig 12.21 Diverter Valve Assembly FigSeals DHW Pressure Differential Valve FigCH Pressure Microswitch Fig 12.21 Diverter Valve Assembly Cont12.22 Flow Regulator Figs. 71 Publication No12.24 Flue Overheat Thermostat Fig 12.23 Secondary Heat Exchanger FigHeat Exchanger 1. Remove the fan spigot outlet pipe from the fan and elbow13.0 ELECTRICAL 14.0 SHORT PARTS LIST Short Parts List102 103 169 Carry out initial fault finding checks 15.0 FAULT FINDINGPublication No Operation sequence correctOperation sequence correctTurn selector to neon illuminated Publication No 15.0 FAULT FINDING Fault Finding Solutions Sections A to E15.0 FAULT FINDING Publication No 15.0 FAULT FINDINGGAS BOILER COMMISSIONING CHECKLIST SERVICE INTERVAL RECORD Tel. 08706 060 Service GBTel. 08706 049 Tel. 08706 096 096 Fax. 01926 410