Ariston EuroCombi Type C A23 MFFI Guide de l'utilisateur

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

A/23 MFFI - A/27 MFFI

G.C.N. 47-116-18 / 47-116-19

Servicing Instructions

Type C Boilers

LEAVE THESE INSTRUCTIONS

ADJACENT TO THE GAS METER

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

2B029

Page No.

1. SERVICING INSTRUCTIONS

1.1 Replacement of Parts 3

1.2 To Gain General Access

- Removing the Front Panel 3

- Removing the Side Panels 4

- To Lower the Control Panel 4

1.3 Access to the Combustion Chamber

- Removing the Sealed Combustion Chamber 5

- Removing the Burner and Injectors 5

- Removing the Electrodes 6

- Removing the Main Heat Exchanger 7

- Removing the Air Pressure Switch 7

- Removing the Venturi Device 8

- Removing the Fan 8

1.4 Servicing and Removal of the Gas Valve

- Setting Gas Pressure 9

- Removing the Spark Ignitor 11

- Removing the Gas Valve 12

1.5 Access to the Hydraulic Circuit

- Removing the D.H.W. (Secondary) Exchanger 12

- Removing the Safety Valve 13

- Removing the Automatic Air Vent 13

- Removing the Main Flow Circuit Switch 13

- Removing the Pump 14

- Removing the Pressure Gauge 14

- Removing the Expansion Vessel 15

- Removing the Overheat Thermostat 15

- Removing the Heating Temperature Sensor (N.T.C.) 15

1.6 Access to the Control System

- Checking the Fuses 16

- Removing the Time Clock 16

- Removing the P.C.B.s 17

2. FAULT FINDING

2.1 Fault Finding Guide (Flow-chart) 18

2.2 Fault Finding Using the Total Check System 23

3. ELECTRICAL DIAGRAMS

3.1 Electrical Connection 24

3.2 Functional Flow Connection 25

4. SHORT SPARE PARTS LIST 26

TABLE OF CONTENTS

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

B029

1. SERVICING

INSTRUCTIONS

The life of individual components vary and they will need servicing or repla-

cing as and when faults develop.

The fault finding sequence chart in chapter 2 will help to locate which com-

ponent is the cause of any malfunction, and instructions for removal, inspec-

tion and replacement of the individual parts are given in the following pages.

1.1 Replacement

of Parts

1.2T o Gain General

Access

All testing and maintenance operations on the boiler require the control panel

to be lowered.This will also require the removal of the casing.

To dismantle the front part of the casing, proceed as follows:

1. Remove screw “A” (see fig. 1.1);

2. Lift the front panel up and forward (see fig. 1.2).

Fig. 1.2

Fig. 1.1

To ensure efficient safe operation, it is recommended that the boiler is servi-

ced annually by a competent person.

Before starting any servicing work, ensure both the gas and electrical

supplies to the boiler are isolated and the boiler is cool.

Before and after servicing, a combustion analysis should be made via the flue

sampling point (please refer to the Installation Manual for further details).

After servicing, preliminary electrical system checks must be carried out to

ensure electrical safety (i.e. polarity, earth continuity, resistance to earth and

short circuit).

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

4B029

Removing the side panels

1. Remove the screws “B”;

2. Pull the panel away from the boiler, then lift the panel

up and away from the boiler (see fig. 1.2).

To lower control panel

1. Remove the screws “B”

2. Push the two side panels outward slightly (fig. 1.5);

3. Rotate the control panel forward and down.

Fig. 1.4

Fig. 1.5

Fig. 1.7

Fig. 1.6

To access the areas where the adjustment and control devices are located,

simply remove the plugs by pressing from the inside, unscrew the screws “C”

and remove the bottom part of the instrument panel, rotating it upwards.

Fig. 1.3

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

Removing the sealed chamber

frontal cover

1.3 Access to the

Combustion Chamber

Remove the screws “D”

Remove the screws “E”

Removing the combustion cover

GGG

Fig. 1.08 Fig. 1.09

Removing the sealed chamber

frontal cover

Remove the screws “D”

Remove the screws “E”

Removing the combustion cover

EEE

Fig. 1.8 Fig. 1.9

B029

A/23 MFFI

A/27 MFFI

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

6B029

1. Remove the side panels of sealed chamber (fig. 1.10);

2. Remove the screws “H”of the burner (see fig. 1.11);

3. Remove the burner (see fig. 1.12);

4. Remove the injectors using a No. 7 socket spanner;

5. Replace in reverse order.

Removing the burner and the

injectors

Fig. 1.10

Fig. 1.11 Fig. 1.12

push

Fig. 1.10

push

A/23 MFFI A/27 MFFI

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

B029

Removing the electrodes 1. Remove rubber gasket “I”(see fig. 1.13);

2. Disconnect ignition leads by pulling downward (see fig. 1.14);

3. To remove the flame sensor, disconnect the cable at its only connection

point close to the P.C.B. (see fig. 1.15);

5. Remove screw “J”using a Philips No. 2 star tip screwdriver (see fig. 1.16);

6. Slide the electrode gently downward (see fig. 1.17).

To replace, repeat the steps in reverse order, paying particular attention to the

following:

a-Centre the electrode in the positioning hole carefully, otherwise the elec-

trode may break;

b-Check that the cables have been connected correctly;

c-Check that the rubber gasket covers the cable/electrode connection

point completely.

Fig. 1.13

Fig. 1.14

Fig. 1.15

Fig. 1.16 Fig. 1.17

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

8B029

1. Disconnect the electrical connections “L”and silicone pipes “M”from their

connection points (see fig. 1.20);

2. Remove screws “N”on the top of the sealed chamber (see fig. 1.21);

Use a No. 2 star tip screwdriver to remove the switch from the plate.

Fig. 1.21

Fig. 1.20

1. Drain the boiler of water;

2. Release the two connection nuts “K”connecting the exchanger to the

flow and return pipes (see fig. 1.18;

3. Pull it straight out (see fig. 1.19).

Removing the main heat

exchanger

Removing the air pressure switch

Fig. 1.18

Fig. 1.19

A/23 MFFIA/27 MFFI

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

B029

1. Disconnect the silicone pipes “O”and remove the screw “P”

(see fig. 1.22);

2. Extract the venturi (see fig. 1.23).

Removing the venturi device

Removing the fan (A/23 MFFI)

Fig. 1.22 Fig. 1.23

1. Disconnect electrical connections “Q”(see fig.1.24);

2. Remove screws “R”(see fig.1.25).

3. Pull fan to the right, forward and remove (see fig. 126)

Fig. 1.24

Fig. 1.25 Fig. 1.26

A/23 MFFI

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

10 B029

1. Disconnect electrical connections and remove screws

“S”using a No. 2 star tipped screwdriver (see fig.1.27);

2. Pull fan to the right, forward and remove (see fig.1.28);

3. Remove fan from mounting plate;

4. Remove screws “T”(see fig.1.29).

Fig. 1.27

Fig. 1.28 Fig. 1.29

A/27 MFFI

Removing the fan (A/27 MFFI)

Autres manuels pour EuroCombi Type C A23 MFFI

Ce manuel convient aux modèles suivants

Table des matières

Autres manuels Ariston Chaudière

Ariston

Ariston E-Combi 24 Guide de l'utilisateur

Ariston

Ariston INTESA TP23 Manuel utilisateur

Ariston

Ariston Benchmark System A 24 RFF Guide de l'utilisateur

Ariston

Ariston Genus 27 Plus Manuel utilisateur

Ariston

Ariston GENUS 24 FF Manuel utilisateur

Ariston

Ariston GENUS PREMIUM EVO HP 45 Manuel utilisateur

Ariston

Ariston HS C 24 FF NG Manuel utilisateur

Ariston

Ariston GENUS 30 Plus Guide de l'utilisateur

Ariston

Ariston ACO 35 MFFI Manuel utilisateur

Ariston

Ariston ALTEAS ONE Net Series Guide de l'utilisateur

Ariston

Ariston egis premium 25 Manuel utilisateur

Ariston

Ariston Type C Manuel utilisateur

Ariston

Ariston CLAS HE R 24 Manuel utilisateur

Ariston

Ariston CLAS HE SYSTEM 24 Guide de l'utilisateur

Ariston

Ariston microGENUS 23 MFFI Guide de l'utilisateur

Ariston

Ariston COMBI A 24 MFFI Guide de l'utilisateur

Ariston

Ariston EURO COMBI A/27 MFFI Guide de l'utilisateur

Ariston

Ariston E-COMBI EVO Manuel utilisateur

Ariston

Ariston GENUS 41-116-01 Manuel utilisateur

Ariston

Ariston GENUS PREMIUM EVO HP 45 Manuel utilisateur

Ariston

Ariston EuroCombi Type C A23 MFFI Guide de l'utilisateur

Ariston

Ariston ALTEAS ONE Guide d'installation

Ariston

Ariston GENUS 27 RFFI SYSTEM Manuel utilisateur

Ariston

Ariston EURO COMBI 47-116-10 Manuel utilisateur

Manuels Chaudière populaires d'autres marques

Vaillant

Vaillant uniSTOR VIH SW GB 500 BES Manuel utilisateur

Radijator

Radijator BIO max 23.1 Manuel utilisateur

Brunner

Brunner BSV 20 Manuel utilisateur

Buderus

Buderus Logamax GB062-24 KDE H V2 Manuel utilisateur

Potterton

Potterton 50e Fiche technique

UTICA BOILERS

UTICA BOILERS TriFire Manuel utilisateur

Joannes

Joannes LADY Series Manuel

ECR International

ECR International UB90-125 Manuel d'instructions

Froling

Froling FHG Turbo 3000 Manuel utilisateur

Froling

Froling P4 Pellet 8 - 105 Manuel utilisateur

U.S. Boiler Company

U.S. Boiler Company K2 Manuel utilisateur

Henrad

Henrad C95 FF Manuel utilisateur

NeOvo

NeOvo EcoNox EF 36 Manuel utilisateur

Potterton

Potterton PROMAX SL 12 Manuel utilisateur

Eco Hometec

Eco Hometec EC 25 COMPACT Manuel utilisateur

Viessmann

Viessmann VITODENS 200 Mode d’emploi

Baxi

Baxi Prime 1.24 Manuel utilisateur

REXNOVA

REXNOVA ISA 20 BITHERMAL Manuel utilisateur