Table Of Contents - Ariston Euro Combi A/27 MFFI Servicing Instructions

TABLE OF CONTENTS

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1. SERVICING INSTRUCTIONS
1.1 Replacement of Parts
1.2 To Gain General Access
- Removing the Front Panel
- Removing the Side Panels
- To Lower the Control Panel
1.3 Access to the Combustion Chamber
- Removing the Sealed Combustion Chamber
- Removing the Burner and Injectors
- Removing the Electrodes
- Removing the Main Heat Exchanger
- Removing the Air Pressure Switch
- Removing the Venturi Device
- Removing the Fan
1.4 Servicing and Removal of the Gas Valve
- Setting Gas Pressure
- Removing the Spark Ignitor
- Removing the Gas Valve
1.5 Access to the Hydraulic Circuit
- Removing the D.H.W. (Secondary) Exchanger
- Removing the Safety Valve
- Removing the Automatic Air Vent
- Removing the Main Flow Circuit Switch
- Removing the Pump
- Removing the Pressure Gauge
- Removing the Expansion Vessel
- Removing the Overheat Thermostat
- Removing the Heating Temperature Sensor (N.T.C.)
1.6 Access to the Control System
- Checking the Fuses
- Removing the Time Clock
- Removing the P.C.B.s
2. FAULT FINDING
2.1 Fault Finding Guide (Flow-chart)
2.2 Fault Finding Using the Total Check System
3. ELECTRICAL DIAGRAMS
3.1 Electrical Connection
3.2 Functional Flow Connection
4. SHORT SPARE PARTS LIST
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