TABLE OF CONTENTS

1.SERVICING INSTRUCTIONS

1.1REPLACEMENT OF PARTS

1.2TO GAIN GENERAL ACCESS

-Removing the front panel

-Removing the sealed chamber frontal cover

-Removing the side panels

1.3ACCESS TO THE COMBUSTION CHAMBER

-Removing the combustion cover

-Removing the burner and jets

-Removing the electrodes

-Removing the main heat exchanger

-Removing the air pressure switch

-Removing the fan

-Removing the venturi device

1.4SERVICING AND REMOVAL OF THE GAS VALVE

-Setting the gas pressures

-Removing the spark generator

-Removing the gas valve

1.5ACCESS TO THE WATER CIRCUIT

-Removing the D.H.W. (secondary) exchanger

-Removing the safety valve

-Removing the automatic air vent

-Removing the main circuit flow switch

-Removing the pump

-Removing the pressure gauge

-Removing the expansion vessel

-Removing the overheat thermostat

-Removing the heating temperature sensor (N.T.C.)

-Removing the D.H.W. temperature sensor (N.T.C.)

-Removing the divertor valve actuator

-Removing the D.H.W. flow switch

1.6ACCESS TO THE CONTROL SYSTEM

-Checking the fuses

-Removing the time clock

-Removing the P.C.B.

2.FAULT FINDING

2.1FAULT FINDING GUIDE (FLOW-CHART)

3.ELECTRICAL DIAGRAMS

4.SHORT SPARE PARTS LIST

2

B063

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Ariston 47-116-15 installation instructions Fault Finding