Service manual

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97-05
PARAMETER PROGRAMMING
When the mother board is replaced without recovering the
microprocessor from the previous board the following
operations will have to be carried out:
• load the default parameters;
• enter the normal or advanced programming mode to
modify some of the default parameters depending on the
oven function level and the power supply;
• reset the oven chamber temperature potentiometer (only
for function levels 2-3 which use a potentiometer, (UIA
p.c.board) see relative calibration paragraph).
PROGRAMMING DEFAULTS (fig.9)
To program the default parameters the service buttons and
the buzzer are used.
1. With the oven off press and hold down the external
service buttons “A” and “C”; switch on the oven by turning
the switch for levels 2 and 3 or by pressing the ON-OFF
button for levels 4 to 6. At the moment the oven is switched
on the buzzer will emit 1 BEEP. Wait for the oven to emit
a second BEEP and then release the buttons.
2. Press and hold down the buttons “B” and “C”. The oven
will emit 1 BEEP. Keep the two buttons held down and wait
for the second BEEP.
3. Press and hold down the buttons “A” and “B”. The oven
will emit 1 BEEP. Keep the buttons pressed down until the
second BEEP is heard at this point release button “A”.
4. Release button “A” and the buzzer will emit 1 BEEP.
Keep button “B” pressed until the second BEEP is heard.
When the button is released the oven chamber temperature
display will briefly show “PdEF” indicating that the operation
is over.
NORMAL PROGRAMMING (fig.10)
Make sure that you have the parameter list relative to the
microprocessor mounted on your mother board and carry
out the following operations in sequence.
1. With the oven off press and hold down the external
service buttons “A” and “C” and switch on the oven. At the
moment the oven is switched on the buzzer will emit 1
BEEP. Wait for the oven to emit a second BEEP and then
release the buttons.
2. Press and hold down the central button “B” . The oven will
emit 1 BEEP. Keep the button held down and wait for the
second BEEP. When the button is released the oven
chamber temperature display will show the number of the
first parameter “P1” flashing.
At this point the three buttons A,B and C have the
following functions:
• Button “B” allows you to switch between the non flashing
parameter number indicated on the oven chamber tempera-
ture display (the letter “P—” followed by a number) and the
flashing value of that same parameter indicated on the oven
chamber temperature display without the letter “P” and vice
versa; pressing button “B” again will allow you to switch
from the flashing number to the non flashing letter “P—”
DEFAULT PARAMETERS PROGRAMMING
A B C
Press the external
buttons. Switch the
oven on and release
the buttons after the
second BEEP
Press until the
second BEEP is heard
Wait for the second
BEEP without releasing
the middle button
Release the middle
button after the
second BEEP. The
display will show “PdEF”
Fig. 9
NORMAL PROGRAMMING
A B C
Press the external
buttons. Switch the
oven on and release
the buttons after the
second BEEP
Press the central
button until the second
BEEP is heard
Fig. 10
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