MSEX0025_rev01
5
• Interface Board
Responsible for sending signals to the
Potency Module in order to turn the Lamps
and the Fan Motor ON and OFF, with a
Freezer temperature range selection, for
turning the alarm off, Fast Freezing
function, powered-on product signaling,
open door signaling and open door audible
signal. For disassembly or replaced it,
remove the Console Display by forcing it
upward with a medium size screwdriver .
Then pull it forward. Disconnect the
Interface Board from the Flat Cable (multi-
way cable) and replace it.
REMARKS
• Whenever the Refrigerator is powered on, the red Led with the ON inscription should remain lit.
3.2.1 – Freezer Temperature Control :
The temperature inside the product is dependent on the quantity of stored food and on the door opening
frequency.
The Temperature Sensor is located behind the Evaporator and is responsible for monitoring the Freezer
inner temperature. When the temperature on the Sensor is higher than the selected temperature range (see
table below), the Potency Module will turn the Compressor on. When the Sensor detects a temperature
value lower than that of the selected range, the Potency Module will turn the Compressor off.
The temperatures in the compartments are described as follows:
Freezer Compartment
MODEL ADJUST POSITION SWITCH ON SWITCH OFF
WRM34, WBM35 MINIMUM - 9°C - 18°C
WRM38, WBM39 MEDIUM - 13°C - 21°C
WRM44, WBM46 MAXIMUM - 20°C - 27°C
REMARKS
• The Refrigerator control system is fitted with a time counter which allows the compressor to be turned
on only after elapsing SEVEN minutes from the power down. This prevents the Compressor from
attempting to start while the system pressures are not equalized yet.
Console Display
Interface Board
Flat Cable
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