Electrolux Nano Pro Service Manual Download Page 10 | Manualshive

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Electrolux Nano Pro Service Manual Download Page 10

10 of 15

13.- IGNITION SEQUENCE

Open

the

Tap

Water Valve

Pin goes Up

Main Gas Valve

Opens

GAS TO
BURNER

Microswitch

contacts

close

BURNER

IGNITED

Servo valve

OPENS

Spark in

Electrodes.

Control

circuit

Water Heater

Working

System

Tripped

Main Gas Valve closed

Microswitch opens
Servo valve Closed

YES

NO

5 seg.

timer

Flame

detection

t< 5seg

Flame LED

ON

YES

NO

Is the Tap

opened?

Water Heater in

Stand by.

To Reset the system;
Close and re open the

Tap

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Summary of Contents for Nano Pro

Page 1: ...D 4 5 SPARKING BURNER IGNITES FOR A FEW SECONDS AND THEN SWITCHES OFF 4 6 HARD IGNITION OF THE WATER HEATER THERE IS NO SOFT START 5 7 WATER HEATER CONTINUES SPARKING WHEN TAP IS TURNED OFF 5 8 WATER HEATER SWITCHES OFF AFTER FEW MINUTES OF OPERATION 6 9 WATER HEATER REMAINS IGNITED WHEN TAP IS CLOSED 7 10 FLAMES IN BURNER ARE YELLOW 7 11 THE BATTERY LIFE IS VERY SHORT 8 12 USEFUL DATA 9 13 IGNITI...

Page 2: ...itch from the circuit Shut off the gas inlet Short circuit the terminals in the electronic circuit The circuit must generate spark if circuit is O K Adjust Change the micro switch In case it is necessary High ambient humidity No sparking between electrodes Dry the electrodes and clean them Photo 5 The spark electrode wires have lost their insulation Sparking is taking place between the wires and e...

Page 3: ...roswitch needs adjustment Adjust Microswitch Must be activated only with main valve opened The spark is not generated in the sparking electrode Check humidity on electrodes Photo 5 Check position of electrodes or whether they are deformed There is no voltage in Servo valve terminal Check the Electronic circuit earth connection Photo 6 Check the wiring Change the Electronic circuit It sparks but th...

Page 4: ... unit has come loose The electrode flame sensor is out of position The electrode flame sensor is deformed See manual electrodes life The electrode connector is not properly connected Tighten the electrode fixing screw Photo 5 Change the electrodes Check the connection of this connector Photo 7 Photo 13 The electronic circuit Ground terminal is not properly connected Tighten the Ground connection t...

Page 5: ...burner Photo 12 The Ground terminal of the electronic circuit is not properly connected Tighten the Ground connection terminal Photo 6 Defective wiring of electronic circuit Check the wiring and change it if necessary The servo is not working correctly No soft start function Change the gas valve The Servo is integrated in the gas valve Photo 17 The burner ignites WITHOUT SOFT START The nozzles are...

Page 6: ...brane in water valve broken Change the membrane Photo 8 Venturi dirty obstructed Remove and check the venturi Change it if necessary Photo 9 The electrode unit has become loose Tighten the electrode fixing screw Photo 5 The electrode connector is not properly connected Check the connection of this connector Photo 2 and 13 The Ground terminal of the electronic circuit is not correctly connected Tig...

Page 7: ...the pins Change the water and gas valves Main regulator of open selector in water valve is blocked Check the regulator move freely in their housing Photo 9 Change the Water Valve if necessary Venturi obstructed Check change venturi Photo 9 The water heater remains ignited when the tap is turned off Gas shaft blocked Check the gas pin O ring change the O ring Photo 11 10 FLAMES IN BURNER ARE YELLOW...

Page 8: ...of wirings Change electrical installation if necessary The servo valve current consumption is very high Servo valve defective Change gas valve The servo valve is always opened Electronic circuit defective Replace Electronic circuit Photo 2 Electronic circuit defective Replace electronic circuit Photo 2 The Battery life is very short A Saline Battery has been used Battery must be Alkaline ...

Page 9: ...ER OUTLET 1 2 EXHAUST Chimney Diameter 112 mm internal DIMENSIONS A B C D E F G H I J K L 310 578 228 240 112 102 69 4 21 50 133 8 210 115 6 GAS INLET PRESSURE NATURAL G20 13mbar BURNER PRESSURE 10 8 mbar WATER PRESURE Maximum 13 bar Minimum OS 0 25 bar Minimum CS 0 15 bar ...

Page 10: ...s close BURNER IGNITED Servo valve OPENS Spark in Electrodes Control circuit Water Heater Working System Tripped Main Gas Valve closed Microswitch opens Servo valve Closed YES NO 5 seg timer Flame detection t 5seg Flame LED ON YES NO Is the Tap opened Water Heater in Stand by To Reset the system Close and re open the Tap ...

Page 11: ...102 Ignition Circuit LED Burner ON ON OFF Switch POSITIVE POLARITY INDICATED IN CASE COVER 1 Electrodes connector 3 Water filter location in the water valve 4 Water Temperature selector ON OFF Switch LED Burner ON Gas Power selector ...

Page 12: ...2 of 15 7 Microswitch Connector Electrode Connector Ground Connection Electrode Connector 6 5 Electrode Assembly Clean Electrodes Fixing Screw for electrodes 8 Water Valve Membrane Communication Channel ...

Page 13: ...13 of 15 12 Screws for power adjustment Manual Drive Water Valve Pin 10 9 Ventury Main Regulator in Water Valve Main Regulator housing in Water Valve Body Drainage Screw 11 Manual drive Pin Gas Valve ...

Page 14: ...14 of 15 16 TTB Connections TTB Sensor 14 Water Inlet Water Outlet Drain Screw Ventury Water Selector 13 Electrode Connector 15 Water Pin O ring and gaskets Disc Water Valve Upper cover ...

Page 15: ...15 of 15 18 Burner Pressure checking point 17 Servo valve Terminal Gas inlet Pressure checking point Micro switch adjustment screw ...

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