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10.2.4 Fault finding solutions sections F to H

Fig.72

Solutions sections F to H

Replace PCB

Check and correct if necessary

1. Ignition electrode and lead

2. Electrode connection

3. Spark gap and position

Check wiring - see Electrical

Wiring Diagram page 18

YES

0.5

10 ±1

Check and correct if necessary

1. The set of the gas valve

(CO

values - see instruction)

2. Flame sensing electrode and lead connections

3. Flame sensing electrode position

Replace flame sensing electrode or PCB

Replace PCB

YES

Replace safety thermostat

YES

Safety thermostat operated

or faulty

Check for and correct any

system faults

Allow to cool. Continuity

across thermostat terminals

more than 1.5 ohm

Check Flow & Return Sensors

- see section ‘D’

Is 110 still flashing ?

YES

Check supply pressure at the

gas valve:-

Natural Gas - Minimum 17 mbar

PN-0000318

10 Troubleshooting

Содержание Eco Compact Combi 25

Страница 1: ...Checklist and should be left with the user for safe keeping They must be read in conjunction with the Flue Installation Guide United Kingdom en Installation and Service Manual High Efficiency Wall Hu...

Страница 2: ...sing the product and keep it in a safe place for later reference In order to ensure continued safe and efficient operation we recommend that the product is serviced regularly Our service and customer...

Страница 3: ...s 15 3 3 Dimensions and connections clearances 16 3 4 Electrical diagram 17 4 Description of the product 19 4 1 General description 19 4 2 Operating principle 19 4 2 1 Air gas adjustment 19 4 2 2 Comb...

Страница 4: ...6 4 2 Connecting outdoor sensor 44 6 4 3 Identifying label 45 6 4 4 Outdoor sensor graph 45 6 4 5 Setting outdoor sensor curve 45 6 5 Filling the installation 46 6 5 1 Flushing the system 46 6 5 2 Fil...

Страница 5: ...l 60 9 3 12 Gas valve 60 9 3 13 Pump head only 63 9 3 14 Pump complete 63 10 Troubleshooting 64 10 1 Error codes 64 10 1 1 Initial error fault finding checks 64 10 1 2 Display of error codes 64 10 2 F...

Страница 6: ...taller The relevant section of Building Regulations only relates to dwellings Therefore the checklist only applies if the appliance is being installed in a dwelling or some related structure The flowc...

Страница 7: ...form the relevant LABC You must ensure that the certificate number issued by the Gas Safe Register is written onto the Benchmark Checklist Scheme Members only Call Gas Safe Register on 0800 408 5577 o...

Страница 8: ...ows 3 Trace possible leaks and seal them immediately Warning Do not touch the flue gas pipes Depending on the boiler settings the temperature of the flue gas pipes may exceed 60oC Warning Do not touch...

Страница 9: ...ified in any way 1 4 Specific safety instructions 1 4 1 Handling General The following advice should be adhered to from when first handling the boiler to the final stages of installation and also duri...

Страница 10: ...he following cases Failure to abide by the instructions on installing the appliance Failure to abide by the instructions on using the appliance Faulty or insufficient maintenance of the appliance 1 5...

Страница 11: ...prove user safety to prevent problems and to guarantee correct operation of the appliance Danger Risk of dangerous situations that may result in serious personal injury Danger of electric shock Risk o...

Страница 12: ...91 Gas Installation BS 5546 Installation of hot water supplies for domestic purposes BS EN 12828 Heating systems in buildings 3 Technical specifications 12 Safety Performance Quality This boiler has b...

Страница 13: ...813 Domestic Gas Installations The following standards give valuable additional information BS 5546 Installation of hot water supplies for domestic purposes BS EN 12828 Heating systems in buildings BS...

Страница 14: ...l pre charge pressure bar 1 0 1 0 Maximum capacity of central heating system litres 100 100 Primary water content of boiler unpressurised litres 2 5 2 5 Tab 7 Domestic hot water circuit specifications...

Страница 15: ...height width depth mm H 700 W 390 D 285 Tab 11 Connections 25 30 Gas inlet mm 22 22 Heating flow mm 22 22 Heating return mm 22 22 Cold water inlet mm 15 15 Hot water outlet mm 15 15 Pressure relief d...

Страница 16: ...ull load elmax kW 0 028 0 038 Part load elmin kW 0 015 0 015 Standby mode PSB kW 0 003 0 003 Other items Standby heat loss Pstby kW 0 040 0 040 Ignition burner power consumption Pign kW 0 0 Annual ene...

Страница 17: ...flow 4 Hot water outlet 5 Gas inlet 6 Pressure relief pipe 7 Cold water inlet 8 Heating circuit water return 9 Pump drain point 10 Boiler drain point on flow isolation tap 11 Cable entry points The c...

Страница 18: ...M1 M2 b bk bk black br brown b blue g green r red w while g y green yellow Key Description Key Description A Gas valve I Spark ignition electrode B Hall effect sensor J Diverter valve motor C Flue se...

Страница 19: ...t All systems must be thoroughly cleansed flushed and treated with inhibitor Note These installation and servicing instructions must be read in con junction with the Flue Accessories and Fitting Guide...

Страница 20: ...n the demand is satisfied the burner is extinguished and the pump continues to run for a period of 3 minutes Pump Overrun Key to components 1 Pump with automatic air vent 2 Boiler drain tap 3 Pressure...

Страница 21: ...eated enclosure and during periods when the heating system is to be unused it is recommended that the per manent live is left on to give boiler frost protection When the boiler temperature falls below...

Страница 22: ...t exchanger 11 Control box 19 Safety thermostat 4 DHW plate heat exchanger not on System Models 12 Condensate trap 20 Water Pressure Switch 5 Pump with automatic air vent 13 Safety pressure relief val...

Страница 23: ...re Units for pressure 4 5 Standard delivery 4 5 1 Contents of the carton The boiler is delivered in a carton comprising Wall hung gas boiler Wall bracket for fastening the boiler to the wall Fitting k...

Страница 24: ...condensate drain pipe trace heating element 5121379 Multifit remote secondary PRV kit 7665482 Multifit Easy Fill permanent filling link 7715591 Multifit compact pre plumbing jig 720971401 Multifit wa...

Страница 25: ...from the meter to the appliance is of adequate size and the demands of any other gas appliances in the property are tak en into consideration Do not use pipes of a smaller diameter than the boil er g...

Страница 26: ...he primary side of the DHW plate heat exchanger as an automatic integral bypass 5 2 5 System control Further external controls e g room thermostat sensors MUST be fitted to optimise the economical ope...

Страница 27: ...relieve the pres sure by draining the boiler Using a suitable gauge check the pressure at the valve on the underside of the vessel Adjust the pressure as required and repressurise the system 5 2 9 Saf...

Страница 28: ...de a cupboard Where the boiler is sited in an unheated enclosure and during periods when the heating system is to be unused it is recommended that the per manent live is left on to give BOILER frost p...

Страница 29: ...rence must be made to the relevant requirements In GB this is the current IEE Wiring Regulations and Building Regulations In IE reference should be made to the current edition of IS 813 Domestic Gas I...

Страница 30: ...ermination Key Description A Termination to an internal soil and vent pipe B External termination via internal discharge branch e g sink waste downstream It is NOT RECOMMENDED to connect upstream of t...

Страница 31: ...lips of the correct design to prevent sagging It is advisable that the full length of condensate pipe is run internally and preferably be less than 3 metres Internal runs greater than 3 metres or runs...

Страница 32: ...ions are given in BS 5440 Pt 1 For IE recommendations are given in the current edition of I S 813 Do mestic Gas Installations Important Due to the nature of the boiler a plume of water vapour will be...

Страница 33: ...h as a window frame 2 Only ONE 25mm clearance is allowed per installation If one of the dimension D E F G or H is 25mm then the remainder MUST be as shown in brackets in accordance with BS 5440 1 Impo...

Страница 34: ...ut the need for cutting Extensions of 250mm 500mm and 1m are available All fittings should be fully engaged The approximate engagement is 40mm Apply the lubricant supplied to the seal on each fitting...

Страница 35: ...ctor referred to below There must be a clearance of at least 50mm between any part of the ter minal and the guard When ordering a terminal guard quote the appliance name and model number The flue term...

Страница 36: ...vertically 2 Mark the position of the two most suitable fixing slots for the wall plate 3 Mark the position of the centre of the flue hole rear exit For side flue exit mark as shown 4 If required mar...

Страница 37: ...between the circuit and a supply pipe provided a Listed double check valve or some other no less effective backflow pre vention device is permanently connected at the inlet to the circuit and the temp...

Страница 38: ...he boiler s maximum working mains pressure is 8 bar therefore all pipe work connections fittings etc should be suitable for pressures in excess of 8 bar A pressure reducing valve must be fitted for pr...

Страница 39: ...ing flow and return pipework gas supply and mains cold inlet 6 Connect the elbow to the DHW flow outlet 7 Using the sealing washers provided connect the taps and elbow to the boiler 8 Ensure all joint...

Страница 40: ...315mm to 500mm 2 Connection assembly 3 Terminal assembly There are two telescopic sections the terminal assembly and the connec tion assembly a roll of sealing tape and two self tapping screws A 93 el...

Страница 41: ...ase of assembly do not use any other type Ensure flue is fully engaged into elbow B Apply the lubricant supplied for ease of assembly do not use any other type Ensure elbow is fully engaged into boile...

Страница 42: ...ols OpenTherm Important When fitting external controls remove the yellow link wire from the Mains Terminal Block M1 Note Consideration must be given to Health and Safety Document 635 The Electricity a...

Страница 43: ...ernal controls frost thermostat room thermostat timer must always be taken from terminal 2 at the boiler Live Neutral and Earth to power these controls must be taken from the Fused Spur 10 Reclip the...

Страница 44: ...sensor is a low voltage device This wiring is NOT supplied in the kit 4 If it is not possible to pass the wiring through the wall directly behind remove the circular knock out panel in the sensor base...

Страница 45: ...he central heating control knob should be turned clockwise to the position which corresponds with the desired curve as shown on the graph 3 Curve 50 is recommended as the most suitable for the normal...

Страница 46: ...on of I S 813 Domestic Gas Installa tions 2 The sealed primary circuits may be filled or replenished by means of a temporary connection between the circuit and a supply pipe provi ded a Listed double...

Страница 47: ...hen close and disconnect the temporary filling loop except where a permanent loop is fitted Test for gas tightness turn the gas supply on and purge according to GB BS 6891 and in IE I S 813 Domestic G...

Страница 48: ...ion has completed the display will show the primary flow temperature and both the CH and DHW symbols Important If during the first commissioning process the power to the boiler is interrupted the de a...

Страница 49: ...2 Checking combustion chimney sweep mode The case front panel must be fitted when checking combustion Ensure the system is cold and the gas and electric supplies are turned on Important The person ca...

Страница 50: ...y indicating maximum output 5 After checking at maximum turn the CH knob fully anticlock wise 0 will appear in the display indicating minimum output Measuring the combustion Turn on the domestic hot w...

Страница 51: ...nternal flue seals door case seals Replace any seals that appear unsound Is CO 350ppm and CO CO2 ratio 0 004 TURN APPLIANCE OFF Call 0344 871 1545 for advice The appliance MUST NOT be commissioned unt...

Страница 52: ...over the User s Operating Installation and Servicing Instruc tions giving advice on the necessity of regular servicing 4 For IE it is necessary to complete a Declaration of Conformity to indicate com...

Страница 53: ...ure performs a series of tests after which the installa tion is purged this takes approximately five minutes 8 3 Frost protection Where possible draining the system should be avoided If the system is...

Страница 54: ...ed The integrity of the complete flue system and the flue seals by checking air inlet sample to eliminate the possibility of recirculation O2 20 6 CO2 0 2 The integrity of the boiler combustion circui...

Страница 55: ...ate 1 Ensure that both the gas and electrical supplies to the boiler are iso lated and that the boiler is cool 2 Remove the case front panel and hinge down the control panel See Specific maintenance i...

Страница 56: ...he gas electrical supplies 2 Remove the front panel 3 Remove the silencer 4 Disconnect the spark electrode lead and earth wire from the detec tion spark electrode 5 Remove the clip securing the gas fe...

Страница 57: ...disengage the panel Hinge down the control panel 9 3 1 Detection spark ignition electrode 1 Disconnect the electrode lead and earthing cable 2 Using a T15 Torx key remove the retaining screws securin...

Страница 58: ...3 5 DHW temperature sensor NTC 1 Turn off the mains cold water supply tap and draw off the residual domestic hot water 2 Ease the retaining tab on the sensor away and disconnect the elec trical plug 3...

Страница 59: ...ng seal 3 Sealing grommet 4 Discharge pipe 5 Grub screw 1 Drain the primary circuit 2 Disconnect the discharge pipe from the valve and remove the seal ing grommet 3 Using a suitable hexagon key undo t...

Страница 60: ...disconnect the braided hose from the vessel and hydraulic inlet assembly taking care as water may still be in the vessel 5 Ensure that the braided hose is free of restriction as a boiler with a blocke...

Страница 61: ...r neath the boiler 3 Undo the nut on the gas valve outlet Ease the pipe aside Important The gas nozzle injector is inserted in the gas valve outlet 4 Remove the screws securing the gas valve to the bo...

Страница 62: ...6 It is possible to alter the CO2 by adjustment of the gas valve Remove the plastic cover from the Throttle Adjustment Screw At maximum rate the throttle adjustment screw should be turned using a suit...

Страница 63: ...ain the boiler primary circuit 3 Disconnect the electrical plugs from the pump motor 4 Prise off the securing clip that is holding the pump return pipe in po sition Pull away the pipe 5 Pull out the s...

Страница 64: ...of two situations If between 15 and 30 seconds of the burner lighting the primary water temperature has not changed by 1 C If within 10 minutes of the burner lighting the primary water tem perature ac...

Страница 65: ...r re occurs regularly check all PCB connections If this has no effect replace the PCB Fan runs at correct speed 160 flashing Go to section C Spark at ignition electrodes up to 5 seconds for 3 attempts...

Страница 66: ...160 flashing Go to section C Spark at ignition electrodes up to 5 seconds for 3 attempts Go to section F Press the reset button for 1 to 3 seconds YES Burner lights Go to section E Burner goes out aft...

Страница 67: ...inutes check 230V at PCB X13 connector between blue brown see Wiring Diagram NO Replace PCB YES 230V between PCB X13 connector blue and PCB X11 connector black see Wiring Diagram NO Replace PCB YES 23...

Страница 68: ...e CO2 values see instruction 2 Flame sensing electrode and lead connections 3 Flame sensing electrode position 1 2 G Replace flame sensing electrode or PCB Replace PCB YES Replace safety thermostat YE...

Страница 69: ...NO System fault correct NO YES Ensure that the boiler and system are fully vented Check flow temperature sensor connections and position Cold resistance approximately 10k 25 C CH sensors resistance r...

Страница 70: ...ioning procedure Disconnect the gas electric supplies and isolate them Drain the primary circuit and disconnect the filling device Dismantle the chimney system and remove the boiler from the wall moun...

Страница 71: ...12 Disposal 12 1 Disposal and recycling Caution Removal and disposal of the boiler must be carried out by a quali fied person in accordance with local and national regulations 12 Disposal 71...

Страница 72: ...rn sensor 7207471 D NTC flue sensor 7207892 E Diverter valve motor 7216534 F Auto air vent 7207776 G Burner door assembly 7686323 H Insulation rear 7661741 J Insulation front 7661745 K Pump assembly 7...

Страница 73: ...e p m o c start control Time and temperature control to hot water Cylinder thermostat and n o i t a n i b m o C r e m i t r e m m a r g o r p Boiler Heating zone valves t o N d e t t i F required Hot...

Страница 74: ...register No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm AND CO Comments Signature SERVICE 02 Date Engineer name Company name Telephone No Gas safe register No Record At max rate...

Страница 75: ...any name Telephone No Gas safe register No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm AND CO Comments Signature SERVICE 09 Date Engineer name Company name Telephone No Gas safe...

Страница 76: ...76...

Страница 77: ...14 Appendix 77...

Страница 78: ...14 Appendix 78...

Страница 79: ...nological information contained in these technical instructions as well as any drawings and technical de scriptions supplied remain our property and shall not be multiplied without our prior consent i...

Страница 80: ...d conditions visit www baxi co uk terms Failure to adhere to terms and conditions will void your manufacturer s warranty Baxi Brooks House Coventry Road Warwick CV34 4LL Please ensure the boiler is in...

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