Specifications

Merloni Elettrodomestici
FULL NO FROST COMBINED UNIT (2003)
Technical Manual
GB 04-10-28/01 30-43
Language Issue/Edition Page
13. Analysis of knobs and keys (STANDARD models only)
The keys and knobs allow the user to manage the appliance: they are soldered onto the
board on the appliance control panel.
POSSIBLE CAUSE OF MALFUNCTION:
Microcontroller management
Control circuit on the board
Keys
Knobs
TESTING:
General on the appliance and component:
FREEZER knob: turn the knob all the way anticlockwise and check that the appliance is
OFF, opening the refrigerator door and checking that the lamps do not come on.
REFRIGERATOR knob: after switching the appliance on, turning the freezer knob
clockwise, check that on turning the refrigerator knob all the way anticlockwise the
buzzer beeps twice, confirming activation of the HOLIDAY function. Starting from
this latter position, turn the refrigerator knob clockwise, checking that the buzzer beeps
only once, confirming deactivation of the HOLIDAY function.
SUPER FREEZE key: with the appliance ON and the HOLIDAY function not active,
press the key and check that the SUPER FREEZE function is activated (left yellow
LED comes on).
SUPER FRIDGE key: with the appliance ON and the HOLIDAY function not active,
press the key and check that the SUPER COOL function is activated (right yellow LED
comes on).
Board: carry out a quick visual check of the board (breakages or burnouts, etc.); check
by using a replacement.