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10. TROUBLESHOOTING
Malfunctions may occur even when the appliance is used correctly.
Burner fails to light (message "burn" appears on display TM ,
see "Instructions for use" chapter 5).
Possible causes:
- The ignition electrode is incorrectly positioned or the insulation
is damaged. The optimum distance from the outside of the
electrode to the boiler burner is approximately 5 mm(8mm Mod.
20 GN1/1), while the equivalent distance for the convector burner
is approximately 4.5 mm.
- The ignition / flame control device is damaged.
- The ignition electrode high tension lead is broken or shorting to
ground.
- Insufficient gas pressure.
- Faulty gas valve.
- Burner fan unit damaged, insufficient air pressure in combustion
chamber.
- Electronic control panel is damaged.
- Blown fuse, check electrical diagram.
- Oven chamber temperature probe damaged (error EPt1 - see
"Instructions for use" chapter 5).
- Temperature limiter trip.
- High room air humidity (condensation): ventilate the kitchen.
Burner flame extinguishes (message "burn" appears on display
TM, see "Instructions for use" chapter 5).
Possible causes:
- Power supply polarity (Phase/Neutral) inverted.
- Electrical supply to oven is "Phase/Phase" type. In this case fit
the special "Transformer Kit" available from the manufacturer on
request.
- Faulty gas valve.
- Flame detector electrode incorrectly positioned or in open
circuit.
- Burner fan unit damaged (lockout situation).
- Flame control device damaged
- High room air humidity (condensation): ventilate the kitchen.
Oven chamber temperature thermostat control is incorrect.
Possible causes:
- Electronic control panel faulty.
- Oven chamber temperature probe is dirty, faulty, or interrupted,
see error EPt1 (see "Instructions for use" chapter 5).
Oven fails to turn on. Possible causes:
- Electronic control panel is damaged.
- Fuse F2 blown due to damaged control circuit components.
Oven chamber lamps damaged
CAUTION: Before changing oven chamber lamps switch off the
appliance.
11. LAYOUT OF MAIN COMPONENTS
(All work inside the appliance must be carried out exclusively
by a trained installer authorised by the manufacturer)
Removing the control panel provides access to the following
components:
Danger: Live voltage is present with panels removed and unit
switch on. Exercise extreme caution when work with live voltage.
- Electronic circuit boards
- Oven chamber temperature limit thermostat
- Fuses
- Door microswitch
- Oven chamber lamp transformer
- Geared motor for the oven chamber pressure relief butterfly
valve.
WARNING: Before servicing unit switch off power at the main
circuit breaker and place a red tag on the breaker to indicate work
is being done on the circuit.
Remove the appliance left hand side panel to gain access to all
the other components.
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