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The changing can be carried out currently only for the models produced in Mariestad (Sweden).
If the customer experiences excessive deviations between measured and displayed temperatures, the
technician can decrease the temperature area of 3ºC.
To obtain this variation, with the appliance on, it is necessary:
1. Press the Super button and the freezer temperature increase simultaneously or press the increase button
and decrease button simultaneously for at least 5 seconds. (this variant has been necessarily introduced
because in some versions the Super button is not featured).
2. After 5 seconds the buzzer sounds with a long signal, which confirms that the temperature area has been
decreased.
In this way the displayed temperature is reduced by 3º C. For the same set temperature the compressor will
function between cut-in and cut-out temperatures increased by 3º C. In this way an average temperature is
displayed and not the temperature of the warmest part in the freezer compartment.
To display again the normal temperature, repeat the same operations described in point 1. Now the buzzer will
sound with a short signal to confirm that the original conditions have been reset.
This function enables to check if all the Leds and some loads operate correctly.
To activate this function it is necessary disconnect the power supply of the appliance, and then:
Press the temperature increase button within 15 seconds after the connection of the power supply to the
appliance;
Wait 5 seconds before releasing the button.
- The buzzer sounds with a long signal, all the Leds and the digits of the display board (VB) are on and all the
loads of the power board are activated;
- By opening the door the alarm Led switches off; for the 4 stars appliances the Super Led switches off;
- When one of the buttons is pressed the buzzer sounds and, if the evaporator sensor is featured, the
temperature measured by this sensor is displayed. This is the only way to display the temperature measured by
the evaporator NTC sensor.
- If a NTC sensor is disconnected, the display and the LEDs flash (this is valid only for the two-compressor
appliances).
The control programme is interrupted automatically after 1 minute and the compartment returns to normal mode.
7.3 Check programme of the EEPROM code, the software version and the failure code
It is possible to display a sequence of digits containing:
1) EEPROM code,
2) the software version code of the power board and
3) a failure code of the temperature NTC sensors.
To activate this function it is necessary to disconnect the appliance from the power supply, press the freezer
temperature decrease button for 5 seconds (if cooler the refrigerator temperature decrease button) within 15
seconds after the reconnection of the power supply to the appliance.
Once this function has been activated the following operations are carried out automatically:
The display switches off and the buzzer sounds with a long signal.
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The display shows the last 4 digits of the EEPROM code alternated by a short signal of the buzzer. The last
displayed digit is not followed by a short signal.
The display switches off and the buzzer sounds with a long signal.
-
ERF2000 Functions of the electronic boards Rev. 01
7. SPECIAL FUNCTIONS
7.1 Changing the temperature area of the freezer (optional)
7.2 Devices check programme
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