Ariston microCombi Servicing Instructions Download Page 9 | Manualshive

Page: 9 / 28

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Supplied By www.heating spares.co Tel. 0161 620 6677

9

model 23

Regulating the heating power for

natural gas (G20)

model 23

Regulating the heating power for

butane gas (G30)

model 23

34

36

38

40

Regulating the heating power for

propane gas (G31)

23 MFFI

2.78

20

11.0

2.0

1.16

2.02 Kg/h

0.87 Kg/h

27.5 mbar

6.2 mbar

28 mbar

12 x 0.77

2.00 Kg/h

0.85 Kg/h

35.5 mbar

7.3 mbar

37 mbar

12 x 0.77

T

ABLE

A

CG010A

CG011A

CG012A

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Summary of Contents for microCombi

Page 1: ...Supplied By www heating spares co Tel 0161 620 6677 Servicing Instructions Type C Boilers G C N 47 116 16 LEAVE THESE INSTRUCTIONS WITH THE END USER Country of destination GB...

Page 2: ...ALVE Setting the gas pressures Removing the spark generator Removing the gas valve 1 5 ACCESS TO THE WATER CIRCUIT Removing the pump pressure switch Removing the safety valve Removing the automatic ai...

Page 3: ...ructions for removal inspection and replacement of the individual parts are given in the following pages 1 1 REPLACEMENT OF PARTS 1 2 TO GAIN GENERAL ACCESS All testing and maintenance operations on t...

Page 4: ...ws C FIG 1 6 2 Lift the sealed chamber front cover from the locating pins FIG 1 7 FIG 1 6 C C FIG 1 7 1 2 3 Removing the side panels 1 Remove the four screws D for each side panel FIG 1 8 2 Pull the p...

Page 5: ...FIG 1 14 3 Remove screw H FIG 1 15 4 Gently slide the electrode downward FIG 1 16 FIG 1 13 G FIG 1 14 1 3 2 Removing the burner and jets 1 Remove the screws F from the burner FIG 1 11 2 Remove the bu...

Page 6: ...facing each other to give the correct spark gap c Check that the cables have been connected correctly d Check that the rubber gasket covers the cable electrode connection point completely FIG 1 15 FIG...

Page 7: ...ounting plate FIG 1 26 1 3 6 Removing the fan 1 Disconnect the electrical connections K and silicone pipes L from their connection points FIG 1 20 2 Remove screws M on the top of the sealed chamber FI...

Page 8: ...pply terminal from the modureg and adjust screw F Turn the screw clockwise to increase the pressure and coun ter clockwise to decrease the pressure displayed on the pressure gauge corresponding to the...

Page 9: ...s G20 model 23 Regulating the heating power for butane gas G30 model 23 34 36 38 40 Regulating the heating power for propane gas G31 23 MFFI 2 78 20 11 0 2 0 1 16 2 02 Kg h 0 87 Kg h 27 5 mbar 6 2 mba...

Page 10: ...to reset the flame failure reset a number of times during this operation 10 Remove the pipe from the pressure gauge and connect screw C to the pressure test point in order to seal off the gas 11 Care...

Page 11: ...by using a spanner on the nut 3 Remove the pump pressure switch 1 5 ACCESS TO THE WATER CIRCUIT FIG 1 30 FIG 1 31 FIG 1 32 FIG 1 33 U V V 1 4 3 Removing the gas valve Important Before removing the gas...

Page 12: ...ing the automatic air vent 1 Unscrew valve top Y FIG 1 35 2 Remove valve complete with float FIG 1 36 FIG 1 35 Y FIG 1 36 1 5 2 Removing the safety valve 1 Disconnect the discharge pipe work from belo...

Page 13: ...emoving the pump 1 Remove the U clip Z FIG 1 37 2 Remove the retaining clips A1 FIG 1 38 3 Release the nut C1 FIG 1 39 4 Remove the pipe D1 FIG 1 40 5 Remove the screws E1 FIG 1 41 6 Remove the pump Z...

Page 14: ...lease nut H1 FIG 1 45 3 Remove back nut I1 FIG 1 46 4 Remove the expansion vessel FIG 1 47 1 5 5 Removing the pressure gauge 1 Remove the U clip F1 FIG 1 42 2 Remove the pressure gauge coupling FIG 1...

Page 15: ...mounting by releasing the securing clip FIG 1 49 1 50 1 5 8 Removing the heating temperature sensor N T C 1 Pull off the electrical connector and unscrew the sensor probe using a suitable spanner FIG...

Page 16: ...on cover on the reverse of the control panel FIG 1 54 2 Remove the fuses FIG 1 55 FIG 1 54 FIG 1 55 M1 N1 Important Isolate the electrical supply to the boiler before accessing the control panel 1 5 1...

Page 17: ...the P C B 4 Remove the screws R1 FIG 1 59 5 Separate the facia panel from the rear of the control panel 7 Remove the screws S1 and remove the P C B FIG 1 60 FIG 1 59 R1 R1 R1 FIG 1 60 S1 S1 1 6 2 Rem...

Page 18: ...ww heating spares co Tel 0161 620 6677 18 2 FAULT FINDING It is possible to detect and correct any defect by using the standard fault finding diagrams described in this chapter 2 1 FAULT FINDING GUIDE...

Page 19: ...heating spares co Tel 0161 620 6677 19 IS THE PUMP RUNNING NO NO YES YES POWER TO THE PUMP 1 Check that the pump is not stuck 2 Release replace pump 1 Check system pressure 2 Check pump cable 3 Check...

Page 20: ...NO YES NO NO YES 1 Check replace air pressure switch 2 Check if reset button is jammed 3 Check replace flame detection electrode 1 Check replace connection cable 2 Check replace P C B 3 Check air pre...

Page 21: ...lace detection electrode 4 Check replace P C B 1 Check replace spark generator 2 Check replace ignition electrodes and cables 3 Check spark gap 1 Check gas supply pressures 2 Check gas pressure to bur...

Page 22: ...Supplied By www heating spares co Tel 0161 620 6677 22...

Page 23: ...f L E D K Reset Button L Central Heating L E D M Transformer N Circulation Pump Relay O Fan Relay P Gas Valve Relay Q Spark Generator I C A01 Circulation Pump A02 Fan A03 Spark Generator Gas Valve Sup...

Page 24: ...Supplied By www heating spares co Tel 0161 620 6677 24 microCombi 23 MFFI SE016A SF013A...

Page 25: ...Supplied By www heating spares co Tel 0161 620 6677 25 4 SHORT SPARE PARTS LIST microCombi 23 MFFI...

Page 26: ...Supplied By www heating spares co Tel 0161 620 6677 26...

Page 27: ...Supplied By www heating spares co Tel 0161 620 6677 27 NOTES...

Page 28: ...ecanati Manufacturer Merloni TermoSanitari SpA Italy Commercial subsidiary MTS GB LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet htt...

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